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2 Commits

Author SHA1 Message Date
Georg K
f5fec0f374 feat: update code collection check 2022-02-03 20:16:03 +03:00
jar3b
dffcc0992d fix: imports to match v0.13 to python3.10 2021-11-05 18:10:25 +03:00
160 changed files with 23407 additions and 30418 deletions

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@ -1,143 +0,0 @@
name: MongoengineCI
on:
# All PR
pull_request:
# master branch merge
push:
branches:
- master
# release tags
create:
tags:
- 'v[0-9]+\.[0-9]+\.[0-9]+*'
env:
MONGODB_3_6: 3.6.14
MONGODB_4_0: 4.0.23
MONGODB_4_2: 4.2
MONGODB_4_4: 4.4
PYMONGO_3_4: 3.4
PYMONGO_3_6: 3.6
PYMONGO_3_9: 3.9
PYMONGO_3_11: 3.11
MAIN_PYTHON_VERSION: 3.7
jobs:
linting:
# Run pre-commit (https://pre-commit.com/)
# which runs pre-configured linter & autoformatter
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: Set up Python 3.7
uses: actions/setup-python@v2
with:
python-version: 3.7
- run: bash .github/workflows/install_ci_python_dep.sh
- run: pre-commit run -a
test:
# Test suite run against recent python versions
# and against a few combination of MongoDB and pymongo
runs-on: ubuntu-latest
strategy:
fail-fast: false
matrix:
python-version: [3.6, 3.7, 3.8, 3.9, "3.10", pypy3]
MONGODB: [$MONGODB_4_0]
PYMONGO: [$PYMONGO_3_11]
include:
- python-version: 3.7
MONGODB: $MONGODB_3_6
PYMONGO: $PYMONGO_3_9
- python-version: 3.7
MONGODB: $MONGODB_4_2
PYMONGO: $PYMONGO_3_6
- python-version: 3.7
MONGODB: $MONGODB_4_4
PYMONGO: $PYMONGO_3_11
steps:
- uses: actions/checkout@v2
- name: Set up Python ${{ matrix.python-version }}
uses: actions/setup-python@v2
with:
python-version: ${{ matrix.python-version }}
- name: install mongo and ci dependencies
run: |
bash .github/workflows/install_mongo.sh ${{ matrix.MONGODB }}
bash .github/workflows/install_ci_python_dep.sh
bash .github/workflows/start_mongo.sh ${{ matrix.MONGODB }}
- name: tox dry-run (to pre-install venv)
run: tox -e $(echo py${{ matrix.python-version }}-mg${{ matrix.PYMONGO }} | tr -d . | sed -e 's/pypypy/pypy/') -- -a "-k=test_ci_placeholder"
- name: Run test suite
run: tox -e $(echo py${{ matrix.python-version }}-mg${{ matrix.PYMONGO }} | tr -d . | sed -e 's/pypypy/pypy/') -- -a "--cov=mongoengine"
- name: Send coverage to Coveralls
env:
GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
COVERALLS_SERVICE_NAME: github
if: ${{ matrix.python-version == env.MAIN_PYTHON_VERSION }}
run: coveralls
build_doc_dryrun:
# ensures that readthedocs can be built continuously
# to avoid that it breaks when new releases are being created
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: Set up Python ${{ matrix.python-version }}
uses: actions/setup-python@v2
with:
python-version: 3.7
- name: install python dep
run: |
pip install -e .
pip install -r docs/requirements.txt
- name: build doc
run: |
cd docs
make html-readthedocs
build-n-publish-dummy:
runs-on: ubuntu-latest
needs: [linting, test, build_doc_dryrun]
if: github.event_name != 'pull_request'
steps:
- uses: actions/checkout@master
- name: Set up Python 3.7
uses: actions/setup-python@v1
with:
python-version: 3.7
- name: build dummy wheel for test-pypi
run: |
pip install wheel
python setup.py egg_info -b ".dev`date '+%Y%m%d%H%M%S'`" build sdist bdist_wheel
# - name: publish test-pypi
# # Although working and recommended, test-pypi has a limit
# # in the size of projects so it's better to avoid publishing
# # until there is a way to garbage collect these dummy releases
# uses: pypa/gh-action-pypi-publish@master
# with:
# password: ${{ secrets.test_pypi_token }}
# repository_url: https://test.pypi.org/legacy/
build-n-publish:
runs-on: ubuntu-latest
needs: [linting, test, build_doc_dryrun, build-n-publish-dummy]
if: github.event_name == 'create' && startsWith(github.ref, 'refs/tags/v')
steps:
- uses: actions/checkout@master
- name: Set up Python 3.7
uses: actions/setup-python@v1
with:
python-version: 3.7
# todo separate build from publish
# https://stackoverflow.com/questions/59349905/which-properties-does-github-event-in-a-github-workflow-have
- name: build dummy wheel for test-pypi
run: |
pip install wheel
python setup.py sdist bdist_wheel
- name: publish pypi
uses: pypa/gh-action-pypi-publish@master
with:
password: ${{ secrets.pypi_token }}

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@ -1,5 +0,0 @@
#!/bin/bash
pip install --upgrade pip
pip install coveralls
pip install pre-commit
pip install tox

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@ -1,18 +0,0 @@
#!/bin/bash
MONGODB=$1
# Mongo > 4.0 follows different name convention for download links
mongo_build=mongodb-linux-x86_64-${MONGODB}
if [[ "$MONGODB" == *"4.2"* ]]; then
mongo_build=mongodb-linux-x86_64-ubuntu1804-v${MONGODB}-latest
elif [[ "$MONGODB" == *"4.4"* ]]; then
mongo_build=mongodb-linux-x86_64-ubuntu1804-v${MONGODB}-latest
fi
wget http://fastdl.mongodb.org/linux/$mongo_build.tgz
tar xzf $mongo_build.tgz
mongodb_dir=$(find ${PWD}/ -type d -name "mongodb-linux-x86_64*")
$mongodb_dir/bin/mongod --version

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@ -1,9 +0,0 @@
#!/bin/bash
MONGODB=$1
mongodb_dir=$(find ${PWD}/ -type d -name "mongodb-linux-x86_64*")
mkdir $mongodb_dir/data
$mongodb_dir/bin/mongod --dbpath $mongodb_dir/data --logpath $mongodb_dir/mongodb.log --fork
mongo --eval 'db.version();' # Make sure mongo is awake

11
.gitignore vendored
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@ -1,15 +1,8 @@
.*
!.gitignore !.gitignore
*~ *~
*.py[co] *.py[co]
.*.sw[po] .*.sw[po]
.cache/
.coverage
.coveragerc
.env
.idea/
.pytest_cache/
.tox/
.eggs/
*.egg *.egg
docs/.build docs/.build
docs/_build docs/_build
@ -20,6 +13,8 @@ env/
.settings .settings
.project .project
.pydevproject .pydevproject
tests/test_bugfix.py
htmlcov/ htmlcov/
venv venv
venv3 venv3
scratchpad

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@ -0,0 +1,23 @@
#!/bin/bash
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 7F0CEB10
if [ "$MONGODB" = "2.4" ]; then
echo "deb http://downloads-distro.mongodb.org/repo/ubuntu-upstart dist 10gen" | sudo tee /etc/apt/sources.list.d/mongodb.list
sudo apt-get update
sudo apt-get install mongodb-10gen=2.4.14
sudo service mongodb start
elif [ "$MONGODB" = "2.6" ]; then
echo "deb http://downloads-distro.mongodb.org/repo/ubuntu-upstart dist 10gen" | sudo tee /etc/apt/sources.list.d/mongodb.list
sudo apt-get update
sudo apt-get install mongodb-org-server=2.6.12
# service should be started automatically
elif [ "$MONGODB" = "3.0" ]; then
echo "deb http://repo.mongodb.org/apt/ubuntu precise/mongodb-org/3.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb.list
sudo apt-get update
sudo apt-get install mongodb-org-server=3.0.14
# service should be started automatically
else
echo "Invalid MongoDB version, expected 2.4, 2.6, or 3.0."
exit 1
fi;

22
.landscape.yml Normal file
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@ -0,0 +1,22 @@
pylint:
disable:
# We use this a lot (e.g. via document._meta)
- protected-access
options:
additional-builtins:
# add xrange and long as valid built-ins. In Python 3, xrange is
# translated into range and long is translated into int via 2to3 (see
# "use_2to3" in setup.py). This should be removed when we drop Python
# 2 support (which probably won't happen any time soon).
- xrange
- long
pyflakes:
disable:
# undefined variables are already covered by pylint (and exclude
# xrange & long)
- F821
ignore-paths:
- benchmark.py

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@ -1,26 +0,0 @@
fail_fast: false
repos:
- repo: https://github.com/pre-commit/pre-commit-hooks
rev: v4.0.1
hooks:
- id: check-merge-conflict
- id: debug-statements
- id: trailing-whitespace
- id: end-of-file-fixer
- repo: https://github.com/ambv/black
rev: 21.5b2
hooks:
- id: black
- repo: https://gitlab.com/pycqa/flake8
rev: 3.9.2
hooks:
- id: flake8
- repo: https://github.com/asottile/pyupgrade
rev: v2.19.1
hooks:
- id: pyupgrade
args: [--py36-plus]
- repo: https://github.com/pycqa/isort
rev: 5.8.0
hooks:
- id: isort

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@ -1,20 +0,0 @@
# .readthedocs.yml
# Read the Docs configuration file
# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
# Required
version: 2
# Build documentation in the docs/ directory with Sphinx
sphinx:
configuration: docs/conf.py
# Optionally set the version of Python and requirements required to build your docs
python:
version: 3.7
install:
- requirements: docs/requirements.txt
# docs/conf.py is importing mongoengine
# so mongoengine needs to be installed as well
- method: setuptools
path: .

101
.travis.yml Normal file
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@ -0,0 +1,101 @@
# For full coverage, we'd have to test all supported Python, MongoDB, and
# PyMongo combinations. However, that would result in an overly long build
# with a very large number of jobs, hence we only test a subset of all the
# combinations:
# * MongoDB v2.4 & v3.0 are only tested against Python v2.7 & v3.5.
# * MongoDB v2.4 is tested against PyMongo v2.7 & v3.x.
# * MongoDB v3.0 is tested against PyMongo v3.x.
# * MongoDB v2.6 is currently the "main" version tested against Python v2.7,
# v3.5, PyPy & PyPy3, and PyMongo v2.7, v2.8 & v3.x.
#
# Reminder: Update README.rst if you change MongoDB versions we test.
language: python
python:
- 2.7
- 3.5
- pypy
- pypy3
env:
- MONGODB=2.6 PYMONGO=2.7
- MONGODB=2.6 PYMONGO=2.8
- MONGODB=2.6 PYMONGO=3.0
matrix:
# Finish the build as soon as one job fails
fast_finish: true
include:
- python: 2.7
env: MONGODB=2.4 PYMONGO=2.7
- python: 2.7
env: MONGODB=2.4 PYMONGO=3.0
- python: 2.7
env: MONGODB=3.0 PYMONGO=3.0
- python: 3.5
env: MONGODB=2.4 PYMONGO=2.7
- python: 3.5
env: MONGODB=2.4 PYMONGO=3.0
- python: 3.5
env: MONGODB=3.0 PYMONGO=3.0
before_install:
- bash .install_mongodb_on_travis.sh
install:
- sudo apt-get install python-dev python3-dev libopenjpeg-dev zlib1g-dev libjpeg-turbo8-dev
libtiff4-dev libjpeg8-dev libfreetype6-dev liblcms2-dev libwebp-dev tcl8.5-dev tk8.5-dev
python-tk
- travis_retry pip install --upgrade pip
- travis_retry pip install coveralls
- travis_retry pip install flake8 flake8-import-order
- travis_retry pip install tox>=1.9
- travis_retry pip install "virtualenv<14.0.0" # virtualenv>=14.0.0 has dropped Python 3.2 support (and pypy3 is based on py32)
- travis_retry tox -e $(echo py$TRAVIS_PYTHON_VERSION-mg$PYMONGO | tr -d . | sed -e 's/pypypy/pypy/') -- -e test
# Cache dependencies installed via pip
cache: pip
# Run flake8 for py27
before_script:
- if [[ $TRAVIS_PYTHON_VERSION == '2.7' ]]; then flake8 .; else echo "flake8 only runs on py27"; fi
script:
- tox -e $(echo py$TRAVIS_PYTHON_VERSION-mg$PYMONGO | tr -d . | sed -e 's/pypypy/pypy/') -- --with-coverage
# For now only submit coveralls for Python v2.7. Python v3.x currently shows
# 0% coverage. That's caused by 'use_2to3', which builds the py3-compatible
# code in a separate dir and runs tests on that.
after_success:
- if [[ $TRAVIS_PYTHON_VERSION == '2.7' ]]; then coveralls --verbose; fi
notifications:
irc: irc.freenode.org#mongoengine
# Only run builds on the master branch and GitHub releases (tagged as vX.Y.Z)
branches:
only:
- master
- /^v.*$/
# Whenever a new release is created via GitHub, publish it on PyPI.
deploy:
provider: pypi
user: the_drow
password:
secure: QMyatmWBnC6ZN3XLW2+fTBDU4LQcp1m/LjR2/0uamyeUzWKdlOoh/Wx5elOgLwt/8N9ppdPeG83ose1jOz69l5G0MUMjv8n/RIcMFSpCT59tGYqn3kh55b0cIZXFT9ar+5cxlif6a5rS72IHm5li7QQyxexJIII6Uxp0kpvUmek=
# create a source distribution and a pure python wheel for faster installs
distributions: "sdist bdist_wheel"
# only deploy on tagged commits (aka GitHub releases) and only for the
# parent repo's builds running Python 2.7 along with dev PyMongo (we run
# Travis against many different Python and PyMongo versions and we don't
# want the deploy to occur multiple times).
on:
tags: true
repo: MongoEngine/mongoengine
condition: "$PYMONGO = 3.0"
python: 2.7

20
AUTHORS
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@ -243,23 +243,3 @@ that much better:
* Victor Varvaryuk * Victor Varvaryuk
* Stanislav Kaledin (https://github.com/sallyruthstruik) * Stanislav Kaledin (https://github.com/sallyruthstruik)
* Dmitry Yantsen (https://github.com/mrTable) * Dmitry Yantsen (https://github.com/mrTable)
* Renjianxin (https://github.com/Davidrjx)
* Erdenezul Batmunkh (https://github.com/erdenezul)
* Andy Yankovsky (https://github.com/werat)
* Bastien Gérard (https://github.com/bagerard)
* Trevor Hall (https://github.com/tjhall13)
* Gleb Voropaev (https://github.com/buggyspace)
* Paulo Amaral (https://github.com/pauloAmaral)
* Gaurav Dadhania (https://github.com/GVRV)
* Yurii Andrieiev (https://github.com/yandrieiev)
* Filip Kucharczyk (https://github.com/Pacu2)
* Eric Timmons (https://github.com/daewok)
* Matthew Simpson (https://github.com/mcsimps2)
* Leonardo Domingues (https://github.com/leodmgs)
* Agustin Barto (https://github.com/abarto)
* Stankiewicz Mateusz (https://github.com/mas15)
* Felix Schultheiß (https://github.com/felix-smashdocs)
* Jan Stein (https://github.com/janste63)
* Timothé Perez (https://github.com/AchilleAsh)
* oleksandr-l5 (https://github.com/oleksandr-l5)
* Ido Shraga (https://github.com/idoshr)

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@ -20,47 +20,20 @@ post to the `user group <http://groups.google.com/group/mongoengine-users>`
Supported Interpreters Supported Interpreters
---------------------- ----------------------
MongoEngine supports CPython 3.5 and newer as well as Pypy3. MongoEngine supports CPython 2.7 and newer. Language
Language features not supported by all interpreters can not be used. features not supported by all interpreters can not be used.
Please also ensure that your code is properly converted by
Python3 codebase `2to3 <http://docs.python.org/library/2to3.html>`_ for Python 3 support.
----------------------
Since 0.20, the codebase is exclusively Python 3.
Earlier versions were exclusively Python2, and were relying on 2to3 to support Python3 installs.
Travis runs the tests against the main Python 3.x versions.
Style Guide Style Guide
----------- -----------
MongoEngine's codebase is auto-formatted with `black <https://github.com/python/black>`_, imports are ordered with `isort <https://pycqa.github.io/isort/>`_ MongoEngine aims to follow `PEP8 <http://www.python.org/dev/peps/pep-0008/>`_
and other tools like flake8 are also used. Those tools will run as part of the CI and will fail in case the code is not formatted properly. including 4 space indents. When possible we try to stick to 79 character line
limits. However, screens got bigger and an ORM has a strong focus on
To install all development tools, simply run the following commands: readability and if it can help, we accept 119 as maximum line length, in a
similar way as `django does
.. code-block:: console <https://docs.djangoproject.com/en/dev/internals/contributing/writing-code/coding-style/#python-style>`_
$ python -m pip install -r requirements-dev.txt
You can install `pre-commit <https://pre-commit.com/>`_ into your git hooks,
to automatically check and fix any formatting issue before creating a
git commit.
To enable ``pre-commit`` simply run:
.. code-block:: console
$ pre-commit install
See the ``.pre-commit-config.yaml`` configuration file for more information
on how it works.
pre-commit will now run upon every commit and will reject anything that doesn't comply.
You can also run all the checks with ``pre-commit run -a``, this is what is used in the CI.
Testing Testing
------- -------
@ -82,7 +55,7 @@ General Guidelines
should adapt to the breaking change in docs/upgrade.rst. should adapt to the breaking change in docs/upgrade.rst.
- Write inline documentation for new classes and methods. - Write inline documentation for new classes and methods.
- Write tests and make sure they pass (make sure you have a mongod - Write tests and make sure they pass (make sure you have a mongod
running on the default port, then execute ``python setup.py test`` running on the default port, then execute ``python setup.py nosetests``
from the cmd line to run the test suite). from the cmd line to run the test suite).
- Ensure tests pass on all supported Python, PyMongo, and MongoDB versions. - Ensure tests pass on all supported Python, PyMongo, and MongoDB versions.
You can test various Python and PyMongo versions locally by executing You can test various Python and PyMongo versions locally by executing
@ -104,6 +77,4 @@ You might also use the github `Edit <https://github.com/blog/844-forking-with-th
button. button.
If you want to test your documentation changes locally, you need to install If you want to test your documentation changes locally, you need to install
the ``sphinx`` and ``sphinx_rtd_theme`` packages. Once these are installed, the ``sphinx`` package.
go to the ``docs`` directory, run ``make html`` and inspect the updated docs
by running ``open _build/html/index.html``.

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@ -12,8 +12,9 @@ MongoEngine
.. image:: https://coveralls.io/repos/github/MongoEngine/mongoengine/badge.svg?branch=master .. image:: https://coveralls.io/repos/github/MongoEngine/mongoengine/badge.svg?branch=master
:target: https://coveralls.io/github/MongoEngine/mongoengine?branch=master :target: https://coveralls.io/github/MongoEngine/mongoengine?branch=master
.. image:: https://img.shields.io/badge/code%20style-black-000000.svg .. image:: https://landscape.io/github/MongoEngine/mongoengine/master/landscape.svg?style=flat
:target: https://github.com/ambv/black :target: https://landscape.io/github/MongoEngine/mongoengine/master
:alt: Code Health
About About
===== =====
@ -25,30 +26,27 @@ an `API reference <https://mongoengine-odm.readthedocs.io/apireference.html>`_.
Supported MongoDB Versions Supported MongoDB Versions
========================== ==========================
MongoEngine is currently tested against MongoDB v3.4, v3.6 and v4.0. Future versions MongoEngine is currently tested against MongoDB v2.4, v2.6, and v3.0. Future
should be supported as well, but aren't actively tested at the moment. Make versions should be supported as well, but aren't actively tested at the moment.
sure to open an issue or submit a pull request if you experience any problems Make sure to open an issue or submit a pull request if you experience any
with MongoDB version > 4.0. problems with MongoDB v3.2+.
Installation Installation
============ ============
We recommend the use of `virtualenv <https://virtualenv.pypa.io/>`_ and of We recommend the use of `virtualenv <https://virtualenv.pypa.io/>`_ and of
`pip <https://pip.pypa.io/>`_. You can then use ``python -m pip install -U mongoengine``. `pip <https://pip.pypa.io/>`_. You can then use ``pip install -U mongoengine``.
You may also have `setuptools <http://peak.telecommunity.com/DevCenter/setuptools>`_ You may also have `setuptools <http://peak.telecommunity.com/DevCenter/setuptools>`_
and thus you can use ``easy_install -U mongoengine``. Another option is and thus you can use ``easy_install -U mongoengine``. Otherwise, you can download the
`pipenv <https://docs.pipenv.org/>`_. You can then use ``pipenv install mongoengine`` source from `GitHub <http://github.com/MongoEngine/mongoengine>`_ and run ``python
to both create the virtual environment and install the package. Otherwise, you can setup.py install``.
download the source from `GitHub <http://github.com/MongoEngine/mongoengine>`_ and
run ``python setup.py install``.
The support for Python2 was dropped with MongoEngine 0.20.0
Dependencies Dependencies
============ ============
All of the dependencies can easily be installed via `python -m pip <https://pip.pypa.io/>`_. All of the dependencies can easily be installed via `pip <https://pip.pypa.io/>`_.
At the very least, you'll need these two packages to use MongoEngine: At the very least, you'll need these two packages to use MongoEngine:
- pymongo>=3.4 - pymongo>=2.7.1
- six>=1.10.0
If you utilize a ``DateTimeField``, you might also use a more flexible date parser: If you utilize a ``DateTimeField``, you might also use a more flexible date parser:
@ -58,10 +56,6 @@ If you need to use an ``ImageField`` or ``ImageGridFsProxy``:
- Pillow>=2.0.0 - Pillow>=2.0.0
If you need to use signals:
- blinker>=1.3
Examples Examples
======== ========
Some simple examples of what MongoEngine code looks like: Some simple examples of what MongoEngine code looks like:
@ -95,11 +89,12 @@ Some simple examples of what MongoEngine code looks like:
# Iterate over all posts using the BlogPost superclass # Iterate over all posts using the BlogPost superclass
>>> for post in BlogPost.objects: >>> for post in BlogPost.objects:
... print('===', post.title, '===') ... print '===', post.title, '==='
... if isinstance(post, TextPost): ... if isinstance(post, TextPost):
... print(post.content) ... print post.content
... elif isinstance(post, LinkPost): ... elif isinstance(post, LinkPost):
... print('Link:', post.url) ... print 'Link:', post.url
... print
... ...
# Count all blog posts and its subtypes # Count all blog posts and its subtypes
@ -119,8 +114,7 @@ Some simple examples of what MongoEngine code looks like:
Tests Tests
===== =====
To run the test suite, ensure you are running a local instance of MongoDB on To run the test suite, ensure you are running a local instance of MongoDB on
the standard port and have ``pytest`` installed. Then, run ``python setup.py test`` the standard port and have ``nose`` installed. Then, run ``python setup.py nosetests``.
or simply ``pytest``.
To run the test suite on every supported Python and PyMongo version, you can To run the test suite on every supported Python and PyMongo version, you can
use ``tox``. You'll need to make sure you have each supported Python version use ``tox``. You'll need to make sure you have each supported Python version
@ -129,18 +123,20 @@ installed in your environment and then:
.. code-block:: shell .. code-block:: shell
# Install tox # Install tox
$ python -m pip install tox $ pip install tox
# Run the test suites # Run the test suites
$ tox $ tox
If you wish to run a subset of tests, use the pytest convention: If you wish to run a subset of tests, use the nosetests convention:
.. code-block:: shell .. code-block:: shell
# Run all the tests in a particular test file # Run all the tests in a particular test file
$ pytest tests/fields/test_fields.py $ python setup.py nosetests --tests tests/fields/fields.py
# Run only particular test class in that file # Run only particular test class in that file
$ pytest tests/fields/test_fields.py::TestField $ python setup.py nosetests --tests tests/fields/fields.py:FieldTest
# Use the -s option if you want to print some debug statements or use pdb
$ python setup.py nosetests --tests tests/fields/fields.py:FieldTest -s
Community Community
========= =========

207
benchmark.py Normal file
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@ -0,0 +1,207 @@
#!/usr/bin/env python
"""
Simple benchmark comparing PyMongo and MongoEngine.
Sample run on a mid 2015 MacBook Pro (commit b282511):
Benchmarking...
----------------------------------------------------------------------------------------------------
Creating 10000 dictionaries - Pymongo
2.58979988098
----------------------------------------------------------------------------------------------------
Creating 10000 dictionaries - Pymongo write_concern={"w": 0}
1.26657605171
----------------------------------------------------------------------------------------------------
Creating 10000 dictionaries - MongoEngine
8.4351580143
----------------------------------------------------------------------------------------------------
Creating 10000 dictionaries without continual assign - MongoEngine
7.20191693306
----------------------------------------------------------------------------------------------------
Creating 10000 dictionaries - MongoEngine - write_concern={"w": 0}, cascade = True
6.31104588509
----------------------------------------------------------------------------------------------------
Creating 10000 dictionaries - MongoEngine, write_concern={"w": 0}, validate=False, cascade=True
6.07083487511
----------------------------------------------------------------------------------------------------
Creating 10000 dictionaries - MongoEngine, write_concern={"w": 0}, validate=False
5.97704291344
----------------------------------------------------------------------------------------------------
Creating 10000 dictionaries - MongoEngine, force_insert=True, write_concern={"w": 0}, validate=False
5.9111430645
"""
import timeit
def main():
print("Benchmarking...")
setup = """
from pymongo import MongoClient
connection = MongoClient()
connection.drop_database('timeit_test')
"""
stmt = """
from pymongo import MongoClient
connection = MongoClient()
db = connection.timeit_test
noddy = db.noddy
for i in range(10000):
example = {'fields': {}}
for j in range(20):
example['fields']['key' + str(j)] = 'value ' + str(j)
noddy.save(example)
myNoddys = noddy.find()
[n for n in myNoddys] # iterate
"""
print("-" * 100)
print("""Creating 10000 dictionaries - Pymongo""")
t = timeit.Timer(stmt=stmt, setup=setup)
print(t.timeit(1))
stmt = """
from pymongo import MongoClient
from pymongo.write_concern import WriteConcern
connection = MongoClient()
db = connection.get_database('timeit_test', write_concern=WriteConcern(w=0))
noddy = db.noddy
for i in range(10000):
example = {'fields': {}}
for j in range(20):
example['fields']["key"+str(j)] = "value "+str(j)
noddy.save(example)
myNoddys = noddy.find()
[n for n in myNoddys] # iterate
"""
print("-" * 100)
print("""Creating 10000 dictionaries - Pymongo write_concern={"w": 0}""")
t = timeit.Timer(stmt=stmt, setup=setup)
print(t.timeit(1))
setup = """
from pymongo import MongoClient
connection = MongoClient()
connection.drop_database('timeit_test')
connection.close()
from mongoengine import Document, DictField, connect
connect('timeit_test')
class Noddy(Document):
fields = DictField()
"""
stmt = """
for i in range(10000):
noddy = Noddy()
for j in range(20):
noddy.fields["key"+str(j)] = "value "+str(j)
noddy.save()
myNoddys = Noddy.objects()
[n for n in myNoddys] # iterate
"""
print("-" * 100)
print("""Creating 10000 dictionaries - MongoEngine""")
t = timeit.Timer(stmt=stmt, setup=setup)
print(t.timeit(1))
stmt = """
for i in range(10000):
noddy = Noddy()
fields = {}
for j in range(20):
fields["key"+str(j)] = "value "+str(j)
noddy.fields = fields
noddy.save()
myNoddys = Noddy.objects()
[n for n in myNoddys] # iterate
"""
print("-" * 100)
print("""Creating 10000 dictionaries without continual assign - MongoEngine""")
t = timeit.Timer(stmt=stmt, setup=setup)
print(t.timeit(1))
stmt = """
for i in range(10000):
noddy = Noddy()
for j in range(20):
noddy.fields["key"+str(j)] = "value "+str(j)
noddy.save(write_concern={"w": 0}, cascade=True)
myNoddys = Noddy.objects()
[n for n in myNoddys] # iterate
"""
print("-" * 100)
print("""Creating 10000 dictionaries - MongoEngine - write_concern={"w": 0}, cascade = True""")
t = timeit.Timer(stmt=stmt, setup=setup)
print(t.timeit(1))
stmt = """
for i in range(10000):
noddy = Noddy()
for j in range(20):
noddy.fields["key"+str(j)] = "value "+str(j)
noddy.save(write_concern={"w": 0}, validate=False, cascade=True)
myNoddys = Noddy.objects()
[n for n in myNoddys] # iterate
"""
print("-" * 100)
print("""Creating 10000 dictionaries - MongoEngine, write_concern={"w": 0}, validate=False, cascade=True""")
t = timeit.Timer(stmt=stmt, setup=setup)
print(t.timeit(1))
stmt = """
for i in range(10000):
noddy = Noddy()
for j in range(20):
noddy.fields["key"+str(j)] = "value "+str(j)
noddy.save(validate=False, write_concern={"w": 0})
myNoddys = Noddy.objects()
[n for n in myNoddys] # iterate
"""
print("-" * 100)
print("""Creating 10000 dictionaries - MongoEngine, write_concern={"w": 0}, validate=False""")
t = timeit.Timer(stmt=stmt, setup=setup)
print(t.timeit(1))
stmt = """
for i in range(10000):
noddy = Noddy()
for j in range(20):
noddy.fields["key"+str(j)] = "value "+str(j)
noddy.save(force_insert=True, write_concern={"w": 0}, validate=False)
myNoddys = Noddy.objects()
[n for n in myNoddys] # iterate
"""
print("-" * 100)
print("""Creating 10000 dictionaries - MongoEngine, force_insert=True, write_concern={"w": 0}, validate=False""")
t = timeit.Timer(stmt=stmt, setup=setup)
print(t.timeit(1))
if __name__ == "__main__":
main()

View File

@ -1,142 +0,0 @@
from timeit import repeat
import mongoengine
from mongoengine import (
BooleanField,
Document,
EmailField,
EmbeddedDocument,
EmbeddedDocumentField,
IntField,
ListField,
StringField,
)
mongoengine.connect(db="mongoengine_benchmark_test")
def timeit(f, n=10000):
return min(repeat(f, repeat=3, number=n)) / float(n)
def test_basic():
class Book(Document):
name = StringField()
pages = IntField()
tags = ListField(StringField())
is_published = BooleanField()
author_email = EmailField()
Book.drop_collection()
def init_book():
return Book(
name="Always be closing",
pages=100,
tags=["self-help", "sales"],
is_published=True,
author_email="alec@example.com",
)
print("Doc initialization: %.3fus" % (timeit(init_book, 1000) * 10 ** 6))
b = init_book()
print("Doc getattr: %.3fus" % (timeit(lambda: b.name, 10000) * 10 ** 6))
print(
"Doc setattr: %.3fus"
% (timeit(lambda: setattr(b, "name", "New name"), 10000) * 10 ** 6) # noqa B010
)
print("Doc to mongo: %.3fus" % (timeit(b.to_mongo, 1000) * 10 ** 6))
print("Doc validation: %.3fus" % (timeit(b.validate, 1000) * 10 ** 6))
def save_book():
b._mark_as_changed("name")
b._mark_as_changed("tags")
b.save()
print("Save to database: %.3fus" % (timeit(save_book, 100) * 10 ** 6))
son = b.to_mongo()
print(
"Load from SON: %.3fus" % (timeit(lambda: Book._from_son(son), 1000) * 10 ** 6)
)
print(
"Load from database: %.3fus" % (timeit(lambda: Book.objects[0], 100) * 10 ** 6)
)
def create_and_delete_book():
b = init_book()
b.save()
b.delete()
print(
"Init + save to database + delete: %.3fms"
% (timeit(create_and_delete_book, 10) * 10 ** 3)
)
def test_big_doc():
class Contact(EmbeddedDocument):
name = StringField()
title = StringField()
address = StringField()
class Company(Document):
name = StringField()
contacts = ListField(EmbeddedDocumentField(Contact))
Company.drop_collection()
def init_company():
return Company(
name="MongoDB, Inc.",
contacts=[
Contact(name="Contact %d" % x, title="CEO", address="Address %d" % x)
for x in range(1000)
],
)
company = init_company()
print("Big doc to mongo: %.3fms" % (timeit(company.to_mongo, 100) * 10 ** 3))
print("Big doc validation: %.3fms" % (timeit(company.validate, 1000) * 10 ** 3))
company.save()
def save_company():
company._mark_as_changed("name")
company._mark_as_changed("contacts")
company.save()
print("Save to database: %.3fms" % (timeit(save_company, 100) * 10 ** 3))
son = company.to_mongo()
print(
"Load from SON: %.3fms"
% (timeit(lambda: Company._from_son(son), 100) * 10 ** 3)
)
print(
"Load from database: %.3fms"
% (timeit(lambda: Company.objects[0], 100) * 10 ** 3)
)
def create_and_delete_company():
c = init_company()
c.save()
c.delete()
print(
"Init + save to database + delete: %.3fms"
% (timeit(create_and_delete_company, 10) * 10 ** 3)
)
if __name__ == "__main__":
test_basic()
print("-" * 100)
test_big_doc()

View File

@ -1,161 +0,0 @@
import timeit
def main():
setup = """
from pymongo import MongoClient
connection = MongoClient()
connection.drop_database('mongoengine_benchmark_test')
"""
stmt = """
from pymongo import MongoClient
connection = MongoClient()
db = connection.mongoengine_benchmark_test
noddy = db.noddy
for i in range(10000):
example = {'fields': {}}
for j in range(20):
example['fields']["key"+str(j)] = "value "+str(j)
noddy.insert_one(example)
myNoddys = noddy.find()
[n for n in myNoddys] # iterate
"""
print("-" * 100)
print("PyMongo: Creating 10000 dictionaries.")
t = timeit.Timer(stmt=stmt, setup=setup)
print(f"{t.timeit(1)}s")
stmt = """
from pymongo import MongoClient, WriteConcern
connection = MongoClient()
db = connection.mongoengine_benchmark_test
noddy = db.noddy.with_options(write_concern=WriteConcern(w=0))
for i in range(10000):
example = {'fields': {}}
for j in range(20):
example['fields']["key"+str(j)] = "value "+str(j)
noddy.insert_one(example)
myNoddys = noddy.find()
[n for n in myNoddys] # iterate
"""
print("-" * 100)
print('PyMongo: Creating 10000 dictionaries (write_concern={"w": 0}).')
t = timeit.Timer(stmt=stmt, setup=setup)
print(f"{t.timeit(1)}s")
setup = """
from pymongo import MongoClient
connection = MongoClient()
connection.drop_database('mongoengine_benchmark_test')
connection.close()
from mongoengine import Document, DictField, connect
connect("mongoengine_benchmark_test")
class Noddy(Document):
fields = DictField()
"""
stmt = """
for i in range(10000):
noddy = Noddy()
for j in range(20):
noddy.fields["key"+str(j)] = "value "+str(j)
noddy.save()
myNoddys = Noddy.objects()
[n for n in myNoddys] # iterate
"""
print("-" * 100)
print("MongoEngine: Creating 10000 dictionaries.")
t = timeit.Timer(stmt=stmt, setup=setup)
print(f"{t.timeit(1)}s")
stmt = """
for i in range(10000):
noddy = Noddy()
fields = {}
for j in range(20):
fields["key"+str(j)] = "value "+str(j)
noddy.fields = fields
noddy.save()
myNoddys = Noddy.objects()
[n for n in myNoddys] # iterate
"""
print("-" * 100)
print("MongoEngine: Creating 10000 dictionaries (using a single field assignment).")
t = timeit.Timer(stmt=stmt, setup=setup)
print(f"{t.timeit(1)}s")
stmt = """
for i in range(10000):
noddy = Noddy()
for j in range(20):
noddy.fields["key"+str(j)] = "value "+str(j)
noddy.save(write_concern={"w": 0})
myNoddys = Noddy.objects()
[n for n in myNoddys] # iterate
"""
print("-" * 100)
print('MongoEngine: Creating 10000 dictionaries (write_concern={"w": 0}).')
t = timeit.Timer(stmt=stmt, setup=setup)
print(f"{t.timeit(1)}s")
stmt = """
for i in range(10000):
noddy = Noddy()
for j in range(20):
noddy.fields["key"+str(j)] = "value "+str(j)
noddy.save(write_concern={"w": 0}, validate=False)
myNoddys = Noddy.objects()
[n for n in myNoddys] # iterate
"""
print("-" * 100)
print(
'MongoEngine: Creating 10000 dictionaries (write_concern={"w": 0}, validate=False).'
)
t = timeit.Timer(stmt=stmt, setup=setup)
print(f"{t.timeit(1)}s")
stmt = """
for i in range(10000):
noddy = Noddy()
for j in range(20):
noddy.fields["key"+str(j)] = "value "+str(j)
noddy.save(force_insert=True, write_concern={"w": 0}, validate=False)
myNoddys = Noddy.objects()
[n for n in myNoddys] # iterate
"""
print("-" * 100)
print(
'MongoEngine: Creating 10000 dictionaries (force_insert=True, write_concern={"w": 0}, validate=False).'
)
t = timeit.Timer(stmt=stmt, setup=setup)
print(f"{t.timeit(1)}s")
if __name__ == "__main__":
main()

View File

@ -33,14 +33,8 @@ clean:
html: html:
$(SPHINXBUILD) -b html $(ALLSPHINXOPTS) $(BUILDDIR)/html $(SPHINXBUILD) -b html $(ALLSPHINXOPTS) $(BUILDDIR)/html
@echo @echo
@echo "Build finished. Check $(BUILDDIR)/html/index.html"
html-readthedocs:
$(SPHINXBUILD) -T -E -b readthedocs $(ALLSPHINXOPTS) $(BUILDDIR)/html
@echo
@echo "Build finished. The HTML pages are in $(BUILDDIR)/html." @echo "Build finished. The HTML pages are in $(BUILDDIR)/html."
dirhtml: dirhtml:
$(SPHINXBUILD) -b dirhtml $(ALLSPHINXOPTS) $(BUILDDIR)/dirhtml $(SPHINXBUILD) -b dirhtml $(ALLSPHINXOPTS) $(BUILDDIR)/dirhtml
@echo @echo

17
docs/_themes/sphinx_rtd_theme/__init__.py vendored Executable file
View File

@ -0,0 +1,17 @@
"""Sphinx ReadTheDocs theme.
From https://github.com/ryan-roemer/sphinx-bootstrap-theme.
"""
import os
VERSION = (0, 1, 5)
__version__ = ".".join(str(v) for v in VERSION)
__version_full__ = __version__
def get_html_theme_path():
"""Return list of HTML theme paths."""
cur_dir = os.path.abspath(os.path.dirname(os.path.dirname(__file__)))
return cur_dir

View File

@ -0,0 +1,15 @@
<ul class="wy-breadcrumbs">
<li><a href="{{ pathto(master_doc) }}">Docs</a> &raquo;</li>
<li><a href="">{{ title }}</a></li>
<li class="wy-breadcrumbs-aside">
{% if display_github %}
<a href="https://github.com/{{ github_user }}/{{ github_repo }}/blob/{{ github_version }}{{ conf_py_path }}{{ pagename }}.rst" class="icon icon-github"> Edit on GitHub</a>
{% elif display_bitbucket %}
<a href="https://bitbucket.org/{{ bitbucket_user }}/{{ bitbucket_repo }}/src/{{ bitbucket_version}}{{ conf_py_path }}{{ pagename }}.rst'" class="icon icon-bitbucket"> Edit on Bitbucket</a>
{% elif show_source and has_source and sourcename %}
<a href="{{ pathto('_sources/' + sourcename, true)|e }}" rel="nofollow"> View page source</a>
{% endif %}
</li>
</ul>
<hr/>

30
docs/_themes/sphinx_rtd_theme/footer.html vendored Executable file
View File

@ -0,0 +1,30 @@
<footer>
{% if next or prev %}
<div class="rst-footer-buttons">
{% if next %}
<a href="{{ next.link|e }}" class="btn btn-neutral float-right" title="{{ next.title|striptags|e }}">Next <span class="icon icon-circle-arrow-right"></span></a>
{% endif %}
{% if prev %}
<a href="{{ prev.link|e }}" class="btn btn-neutral" title="{{ prev.title|striptags|e }}"><span class="icon icon-circle-arrow-left"></span> Previous</a>
{% endif %}
</div>
{% endif %}
<hr/>
<p>
{%- if show_copyright %}
{%- if hasdoc('copyright') %}
{% trans path=pathto('copyright'), copyright=copyright|e %}&copy; <a href="{{ path }}">Copyright</a> {{ copyright }}.{% endtrans %}
{%- else %}
{% trans copyright=copyright|e %}&copy; Copyright {{ copyright }}.{% endtrans %}
{%- endif %}
{%- endif %}
{%- if last_updated %}
{% trans last_updated=last_updated|e %}Last updated on {{ last_updated }}.{% endtrans %}
{%- endif %}
</p>
{% trans %}<a href="https://www.github.com/snide/sphinx_rtd_theme">Sphinx theme</a> provided by <a href="http://readthedocs.org">Read the Docs</a>{% endtrans %}
</footer>

142
docs/_themes/sphinx_rtd_theme/layout.html vendored Executable file
View File

@ -0,0 +1,142 @@
{# TEMPLATE VAR SETTINGS #}
{%- set url_root = pathto('', 1) %}
{%- if url_root == '#' %}{% set url_root = '' %}{% endif %}
{%- if not embedded and docstitle %}
{%- set titlesuffix = " &mdash; "|safe + docstitle|e %}
{%- else %}
{%- set titlesuffix = "" %}
{%- endif %}
<!DOCTYPE html>
<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]-->
<!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]-->
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
{% block htmltitle %}
<title>{{ title|striptags|e }}{{ titlesuffix }}</title>
{% endblock %}
{# FAVICON #}
{% if favicon %}
<link rel="shortcut icon" href="{{ pathto('_static/' + favicon, 1) }}"/>
{% endif %}
{# CANONICAL #}
{%- if theme_canonical_url %}
<link rel="canonical" href="{{ theme_canonical_url }}{{ pagename }}.html"/>
{%- endif %}
{# CSS #}
<link href='https://fonts.googleapis.com/css?family=Lato:400,700|Roboto+Slab:400,700|Inconsolata:400,700' rel='stylesheet' type='text/css'>
{# JS #}
{% if not embedded %}
<script type="text/javascript">
var DOCUMENTATION_OPTIONS = {
URL_ROOT:'{{ url_root }}',
VERSION:'{{ release|e }}',
COLLAPSE_INDEX:false,
FILE_SUFFIX:'{{ '' if no_search_suffix else file_suffix }}',
HAS_SOURCE: {{ has_source|lower }}
};
</script>
{%- for scriptfile in script_files %}
<script type="text/javascript" src="{{ pathto(scriptfile, 1) }}"></script>
{%- endfor %}
{% if use_opensearch %}
<link rel="search" type="application/opensearchdescription+xml" title="{% trans docstitle=docstitle|e %}Search within {{ docstitle }}{% endtrans %}" href="{{ pathto('_static/opensearch.xml', 1) }}"/>
{% endif %}
{% endif %}
{# RTD hosts these file themselves, so just load on non RTD builds #}
{% if not READTHEDOCS %}
<link rel="stylesheet" href="{{ pathto('_static/' + style, 1) }}" type="text/css" />
<script type="text/javascript" src="_static/js/theme.js"></script>
{% endif %}
{% for cssfile in css_files %}
<link rel="stylesheet" href="{{ pathto(cssfile, 1) }}" type="text/css" />
{% endfor %}
{%- block linktags %}
{%- if hasdoc('about') %}
<link rel="author" title="{{ _('About these documents') }}"
href="{{ pathto('about') }}"/>
{%- endif %}
{%- if hasdoc('genindex') %}
<link rel="index" title="{{ _('Index') }}"
href="{{ pathto('genindex') }}"/>
{%- endif %}
{%- if hasdoc('search') %}
<link rel="search" title="{{ _('Search') }}" href="{{ pathto('search') }}"/>
{%- endif %}
{%- if hasdoc('copyright') %}
<link rel="copyright" title="{{ _('Copyright') }}" href="{{ pathto('copyright') }}"/>
{%- endif %}
<link rel="top" title="{{ docstitle|e }}" href="{{ pathto('index') }}"/>
{%- if parents %}
<link rel="up" title="{{ parents[-1].title|striptags|e }}" href="{{ parents[-1].link|e }}"/>
{%- endif %}
{%- if next %}
<link rel="next" title="{{ next.title|striptags|e }}" href="{{ next.link|e }}"/>
{%- endif %}
{%- if prev %}
<link rel="prev" title="{{ prev.title|striptags|e }}" href="{{ prev.link|e }}"/>
{%- endif %}
{%- endblock %}
{%- block extrahead %} {% endblock %}
<script src="//cdnjs.cloudflare.com/ajax/libs/modernizr/2.6.2/modernizr.min.js"></script>
</head>
<body class="wy-body-for-nav">
<div class="wy-grid-for-nav">
{# SIDE NAV, TOGGLES ON MOBILE #}
<nav data-toggle="wy-nav-shift" class="wy-nav-side">
<div class="wy-side-nav-search">
<a href="{{ pathto(master_doc) }}" class="icon icon-home"> {{ project }}</a>
{% include "searchbox.html" %}
</div>
<div class="wy-menu wy-menu-vertical" data-spy="affix">
{% set toctree = toctree(maxdepth=2, collapse=False, includehidden=True) %}
{% if toctree %}
{{ toctree }}
{% else %}
<!-- Local TOC -->
<div class="local-toc">{{ toc }}</div>
{% endif %}
</div>
&nbsp;
</nav>
<section data-toggle="wy-nav-shift" class="wy-nav-content-wrap">
{# MOBILE NAV, TRIGGLES SIDE NAV ON TOGGLE #}
<nav class="wy-nav-top">
<i data-toggle="wy-nav-top" class="icon icon-reorder"></i>
<a href="{{ pathto(master_doc) }}">{{ project }}</a>
</nav>
{# PAGE CONTENT #}
<div class="wy-nav-content">
<div class="rst-content">
{% include "breadcrumbs.html" %}
{% block body %}{% endblock %}
{% include "footer.html" %}
</div>
</div>
</section>
</div>
{% include "versions.html" %}
</body>
</html>

205
docs/_themes/sphinx_rtd_theme/layout_old.html vendored Executable file
View File

@ -0,0 +1,205 @@
{#
basic/layout.html
~~~~~~~~~~~~~~~~~
Master layout template for Sphinx themes.
:copyright: Copyright 2007-2013 by the Sphinx team, see AUTHORS.
:license: BSD, see LICENSE for details.
#}
{%- block doctype -%}
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
{%- endblock %}
{%- set reldelim1 = reldelim1 is not defined and ' &raquo;' or reldelim1 %}
{%- set reldelim2 = reldelim2 is not defined and ' |' or reldelim2 %}
{%- set render_sidebar = (not embedded) and (not theme_nosidebar|tobool) and
(sidebars != []) %}
{%- set url_root = pathto('', 1) %}
{# XXX necessary? #}
{%- if url_root == '#' %}{% set url_root = '' %}{% endif %}
{%- if not embedded and docstitle %}
{%- set titlesuffix = " &mdash; "|safe + docstitle|e %}
{%- else %}
{%- set titlesuffix = "" %}
{%- endif %}
{%- macro relbar() %}
<div class="related">
<h3>{{ _('Navigation') }}</h3>
<ul>
{%- for rellink in rellinks %}
<li class="right" {% if loop.first %}style="margin-right: 10px"{% endif %}>
<a href="{{ pathto(rellink[0]) }}" title="{{ rellink[1]|striptags|e }}"
{{ accesskey(rellink[2]) }}>{{ rellink[3] }}</a>
{%- if not loop.first %}{{ reldelim2 }}{% endif %}</li>
{%- endfor %}
{%- block rootrellink %}
<li><a href="{{ pathto(master_doc) }}">{{ shorttitle|e }}</a>{{ reldelim1 }}</li>
{%- endblock %}
{%- for parent in parents %}
<li><a href="{{ parent.link|e }}" {% if loop.last %}{{ accesskey("U") }}{% endif %}>{{ parent.title }}</a>{{ reldelim1 }}</li>
{%- endfor %}
{%- block relbaritems %} {% endblock %}
</ul>
</div>
{%- endmacro %}
{%- macro sidebar() %}
{%- if render_sidebar %}
<div class="sphinxsidebar">
<div class="sphinxsidebarwrapper">
{%- block sidebarlogo %}
{%- if logo %}
<p class="logo"><a href="{{ pathto(master_doc) }}">
<img class="logo" src="{{ pathto('_static/' + logo, 1) }}" alt="Logo"/>
</a></p>
{%- endif %}
{%- endblock %}
{%- if sidebars != None %}
{#- new style sidebar: explicitly include/exclude templates #}
{%- for sidebartemplate in sidebars %}
{%- include sidebartemplate %}
{%- endfor %}
{%- else %}
{#- old style sidebars: using blocks -- should be deprecated #}
{%- block sidebartoc %}
{%- include "localtoc.html" %}
{%- endblock %}
{%- block sidebarrel %}
{%- include "relations.html" %}
{%- endblock %}
{%- block sidebarsourcelink %}
{%- include "sourcelink.html" %}
{%- endblock %}
{%- if customsidebar %}
{%- include customsidebar %}
{%- endif %}
{%- block sidebarsearch %}
{%- include "searchbox.html" %}
{%- endblock %}
{%- endif %}
</div>
</div>
{%- endif %}
{%- endmacro %}
{%- macro script() %}
<script type="text/javascript">
var DOCUMENTATION_OPTIONS = {
URL_ROOT: '{{ url_root }}',
VERSION: '{{ release|e }}',
COLLAPSE_INDEX: false,
FILE_SUFFIX: '{{ '' if no_search_suffix else file_suffix }}',
HAS_SOURCE: {{ has_source|lower }}
};
</script>
{%- for scriptfile in script_files %}
<script type="text/javascript" src="{{ pathto(scriptfile, 1) }}"></script>
{%- endfor %}
{%- endmacro %}
{%- macro css() %}
<link rel="stylesheet" href="{{ pathto('_static/' + style, 1) }}" type="text/css" />
<link rel="stylesheet" href="{{ pathto('_static/pygments.css', 1) }}" type="text/css" />
{%- for cssfile in css_files %}
<link rel="stylesheet" href="{{ pathto(cssfile, 1) }}" type="text/css" />
{%- endfor %}
{%- endmacro %}
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset={{ encoding }}" />
{{ metatags }}
{%- block htmltitle %}
<title>{{ title|striptags|e }}{{ titlesuffix }}</title>
{%- endblock %}
{{ css() }}
{%- if not embedded %}
{{ script() }}
{%- if use_opensearch %}
<link rel="search" type="application/opensearchdescription+xml"
title="{% trans docstitle=docstitle|e %}Search within {{ docstitle }}{% endtrans %}"
href="{{ pathto('_static/opensearch.xml', 1) }}"/>
{%- endif %}
{%- if favicon %}
<link rel="shortcut icon" href="{{ pathto('_static/' + favicon, 1) }}"/>
{%- endif %}
{%- endif %}
{%- block linktags %}
{%- if hasdoc('about') %}
<link rel="author" title="{{ _('About these documents') }}" href="{{ pathto('about') }}" />
{%- endif %}
{%- if hasdoc('genindex') %}
<link rel="index" title="{{ _('Index') }}" href="{{ pathto('genindex') }}" />
{%- endif %}
{%- if hasdoc('search') %}
<link rel="search" title="{{ _('Search') }}" href="{{ pathto('search') }}" />
{%- endif %}
{%- if hasdoc('copyright') %}
<link rel="copyright" title="{{ _('Copyright') }}" href="{{ pathto('copyright') }}" />
{%- endif %}
<link rel="top" title="{{ docstitle|e }}" href="{{ pathto('index') }}" />
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{%- endif %}
{%- if next %}
<link rel="next" title="{{ next.title|striptags|e }}" href="{{ next.link|e }}" />
{%- endif %}
{%- if prev %}
<link rel="prev" title="{{ prev.title|striptags|e }}" href="{{ prev.link|e }}" />
{%- endif %}
{%- endblock %}
{%- block extrahead %} {% endblock %}
</head>
<body>
{%- block header %}{% endblock %}
{%- block relbar1 %}{{ relbar() }}{% endblock %}
{%- block content %}
{%- block sidebar1 %} {# possible location for sidebar #} {% endblock %}
<div class="document">
{%- block document %}
<div class="documentwrapper">
{%- if render_sidebar %}
<div class="bodywrapper">
{%- endif %}
<div class="body">
{% block body %} {% endblock %}
</div>
{%- if render_sidebar %}
</div>
{%- endif %}
</div>
{%- endblock %}
{%- block sidebar2 %}{{ sidebar() }}{% endblock %}
<div class="clearer"></div>
</div>
{%- endblock %}
{%- block relbar2 %}{{ relbar() }}{% endblock %}
{%- block footer %}
<div class="footer">
{%- if show_copyright %}
{%- if hasdoc('copyright') %}
{% trans path=pathto('copyright'), copyright=copyright|e %}&copy; <a href="{{ path }}">Copyright</a> {{ copyright }}.{% endtrans %}
{%- else %}
{% trans copyright=copyright|e %}&copy; Copyright {{ copyright }}.{% endtrans %}
{%- endif %}
{%- endif %}
{%- if last_updated %}
{% trans last_updated=last_updated|e %}Last updated on {{ last_updated }}.{% endtrans %}
{%- endif %}
{%- if show_sphinx %}
{% trans sphinx_version=sphinx_version|e %}Created using <a href="http://sphinx-doc.org/">Sphinx</a> {{ sphinx_version }}.{% endtrans %}
{%- endif %}
</div>
<p>asdf asdf asdf asdf 22</p>
{%- endblock %}
</body>
</html>

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{#
basic/search.html
~~~~~~~~~~~~~~~~~
Template for the search page.
:copyright: Copyright 2007-2013 by the Sphinx team, see AUTHORS.
:license: BSD, see LICENSE for details.
#}
{%- extends "layout.html" %}
{% set title = _('Search') %}
{% set script_files = script_files + ['_static/searchtools.js'] %}
{% block extrahead %}
<script type="text/javascript">
jQuery(function() { Search.loadIndex("{{ pathto('searchindex.js', 1) }}"); });
</script>
{# this is used when loading the search index using $.ajax fails,
such as on Chrome for documents on localhost #}
<script type="text/javascript" id="searchindexloader"></script>
{{ super() }}
{% endblock %}
{% block body %}
<noscript>
<div id="fallback" class="admonition warning">
<p class="last">
{% trans %}Please activate JavaScript to enable the search
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</p>
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<li>
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<p class="context">{{ context|e }}</p>
</li>
{% endfor %}
</ul>
{% endif %}
</div>
{% endblock %}

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<form id ="rtd-search-form" class="wy-form" action="{{ pathto('search') }}" method="get">
<input type="text" name="q" placeholder="Search docs" />
<input type="hidden" name="check_keywords" value="yes" />
<input type="hidden" name="area" value="default" />
</form>

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$("[data-toggle='rst-versions']").toggleClass("shift");
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$("[data-toggle='rst-current-version']").click(function() {
$("[data-toggle='rst-versions']").toggleClass("shift-up");
});
$("table.docutils:not(.field-list").wrap("<div class='wy-table-responsive'></div>");
});

8
docs/_themes/sphinx_rtd_theme/theme.conf vendored Executable file
View File

@ -0,0 +1,8 @@
[theme]
inherit = basic
stylesheet = css/theme.css
[options]
typekit_id = hiw1hhg
analytics_id =
canonical_url =

37
docs/_themes/sphinx_rtd_theme/versions.html vendored Executable file
View File

@ -0,0 +1,37 @@
{% if READTHEDOCS %}
{# Add rst-badge after rst-versions for small badge style. #}
<div class="rst-versions" data-toggle="rst-versions">
<span class="rst-current-version" data-toggle="rst-current-version">
<span class="icon icon-book"> Read the Docs</span>
v: {{ current_version }}
<span class="icon icon-caret-down"></span>
</span>
<div class="rst-other-versions">
<dl>
<dt>Versions</dt>
{% for slug, url in versions %}
<dd><a href="{{ url }}">{{ slug }}</a></dd>
{% endfor %}
</dl>
<dl>
<dt>Downloads</dt>
{% for type, url in downloads %}
<dd><a href="{{ url }}">{{ type }}</a></dd>
{% endfor %}
</dl>
<dl>
<dt>On Read the Docs</dt>
<dd>
<a href="//{{ PRODUCTION_DOMAIN }}/projects/{{ slug }}/?fromdocs={{ slug }}">Project Home</a>
</dd>
<dd>
<a href="//{{ PRODUCTION_DOMAIN }}/builds/{{ slug }}/?fromdocs={{ slug }}">Builds</a>
</dd>
</dl>
<hr/>
Free document hosting provided by <a href="http://www.readthedocs.org">Read the Docs</a>.
</div>
</div>
{% endif %}

View File

@ -13,7 +13,6 @@ Documents
.. autoclass:: mongoengine.Document .. autoclass:: mongoengine.Document
:members: :members:
:inherited-members:
.. attribute:: objects .. attribute:: objects
@ -22,18 +21,15 @@ Documents
.. autoclass:: mongoengine.EmbeddedDocument .. autoclass:: mongoengine.EmbeddedDocument
:members: :members:
:inherited-members:
.. autoclass:: mongoengine.DynamicDocument .. autoclass:: mongoengine.DynamicDocument
:members: :members:
:inherited-members:
.. autoclass:: mongoengine.DynamicEmbeddedDocument .. autoclass:: mongoengine.DynamicEmbeddedDocument
:members: :members:
:inherited-members:
.. autoclass:: mongoengine.document.MapReduceDocument .. autoclass:: mongoengine.document.MapReduceDocument
:members: :members:
.. autoclass:: mongoengine.ValidationError .. autoclass:: mongoengine.ValidationError
:members: :members:
@ -75,7 +71,6 @@ Fields
.. autoclass:: mongoengine.fields.StringField .. autoclass:: mongoengine.fields.StringField
.. autoclass:: mongoengine.fields.URLField .. autoclass:: mongoengine.fields.URLField
.. autoclass:: mongoengine.fields.EmailField .. autoclass:: mongoengine.fields.EmailField
.. autoclass:: mongoengine.fields.EnumField
.. autoclass:: mongoengine.fields.IntField .. autoclass:: mongoengine.fields.IntField
.. autoclass:: mongoengine.fields.LongField .. autoclass:: mongoengine.fields.LongField
.. autoclass:: mongoengine.fields.FloatField .. autoclass:: mongoengine.fields.FloatField
@ -92,9 +87,7 @@ Fields
.. autoclass:: mongoengine.fields.DictField .. autoclass:: mongoengine.fields.DictField
.. autoclass:: mongoengine.fields.MapField .. autoclass:: mongoengine.fields.MapField
.. autoclass:: mongoengine.fields.ReferenceField .. autoclass:: mongoengine.fields.ReferenceField
.. autoclass:: mongoengine.fields.LazyReferenceField
.. autoclass:: mongoengine.fields.GenericReferenceField .. autoclass:: mongoengine.fields.GenericReferenceField
.. autoclass:: mongoengine.fields.GenericLazyReferenceField
.. autoclass:: mongoengine.fields.CachedReferenceField .. autoclass:: mongoengine.fields.CachedReferenceField
.. autoclass:: mongoengine.fields.BinaryField .. autoclass:: mongoengine.fields.BinaryField
.. autoclass:: mongoengine.fields.FileField .. autoclass:: mongoengine.fields.FileField

View File

@ -1,5 +1,3 @@
========= =========
Changelog Changelog
========= =========
@ -7,300 +5,81 @@ Changelog
Development Development
=========== ===========
- (Fill this out as you fix issues and develop your features). - (Fill this out as you fix issues and develop your features).
- EnumField improvements: now `choices` limits the values of an enum to allow
- Fix deepcopy of EmbeddedDocument #2202
- Fix error when using precision=0 with DecimalField #2535
- Add support for regex and whole word text search query #2568
Changes in 0.23.1
===========
- Bug fix: ignore LazyReferenceFields when clearing _changed_fields #2484
- Improve connection doc #2481
Changes in 0.23.0
=================
- Bugfix: manually setting SequenceField in DynamicDocument doesn't increment the counter #2471
- Add MongoDB 4.2 and 4.4 to CI
- Add support for allowDiskUse on querysets #2468
Changes in 0.22.1
=================
- Declare that Py3.5 is not supported in package metadata #2449
- Moved CI from Travis to Github-Actions
Changes in 0.22.0
=================
- Fix LazyReferenceField dereferencing in embedded documents #2426
- Fix regarding the recent use of Cursor.__spec in .count() that was interfering with mongomock #2425
- Drop support for Python 3.5 by introducing f-strings in the codebase
Changes in 0.21.0
=================
- Bug fix in DynamicDocument which is not parsing known fields in constructor like Document do #2412
- When using pymongo >= 3.7, make use of Collection.count_documents instead of Collection.count
and Cursor.count that got deprecated in pymongo >= 3.7.
This should have a negative impact on performance of count see Issue #2219
- Fix a bug that made the queryset drop the read_preference after clone().
- Remove Py3.5 from CI as it reached EOL and add Python 3.9
- Fix some issues related with db_field/field conflict in constructor #2414
- BREAKING CHANGE: Fix the behavior of Doc.objects.limit(0) which should return all documents (similar to mongodb) #2311
- Bug fix in ListField when updating the first item, it was saving the whole list, instead of
just replacing the first item (as usually done when updating 1 item of the list) #2392
- Add EnumField: ``mongoengine.fields.EnumField``
- Refactoring - Remove useless code related to Document.__only_fields and Queryset.only_fields
- Fix query transformation regarding special operators #2365
- Bug Fix: Document.save() fails when shard_key is not _id #2154
Changes in 0.20.0
=================
- ATTENTION: Drop support for Python2
- Add Mongo 4.0 to Travis
- Fix error when setting a string as a ComplexDateTimeField #2253
- Bump development Status classifier to Production/Stable #2232
- Improve Queryset.get to avoid confusing MultipleObjectsReturned message in case multiple match are found #630
- Fixed a bug causing inaccurate query results, while combining ``__raw__`` and regular filters for the same field #2264
- Add support for the `elemMatch` projection operator in .fields() (e.g BlogPost.objects.fields(elemMatch__comments="test")) #2267
- DictField validate failed without default connection (bug introduced in 0.19.0) #2239
- Remove methods that were deprecated years ago:
- name parameter in Field constructor e.g `StringField(name="...")`, was replaced by db_field
- Queryset.slave_okay() was deprecated since pymongo3
- dropDups was dropped with MongoDB3
- ``Queryset._ensure_indexes`` and ``Queryset.ensure_indexes``, the right method to use is ``Document.ensure_indexes``
- Added pre-commit for development/CI #2212
- Renamed requirements-lint.txt to requirements-dev.txt #2212
- Support for setting ReadConcern #2255
Changes in 0.19.1
=================
- Tests require Pillow < 7.0.0 as it dropped Python2 support
- DEPRECATION: The interface of ``QuerySet.aggregate`` method was changed, it no longer takes an unpacked list of
pipeline steps (*pipeline) but simply takes the pipeline list just like ``pymongo.Collection.aggregate`` does. #2079
Changes in 0.19.0
=================
- BREAKING CHANGE: ``class_check`` and ``read_preference`` keyword arguments are no longer available when filtering a ``QuerySet``. #2112
- Instead of ``Doc.objects(foo=bar, read_preference=...)`` use ``Doc.objects(foo=bar).read_preference(...)``.
- Instead of ``Doc.objects(foo=bar, class_check=False)`` use ``Doc.objects(foo=bar).clear_cls_query(...)``.
- This change also renames the private ``QuerySet._initial_query`` attribute to ``_cls_query``.
- BREAKING CHANGE: Removed the deprecated ``format`` param from ``QuerySet.explain``. #2113
- BREAKING CHANGE: Renamed ``MongoEngineConnectionError`` to ``ConnectionFailure``. #2111
- If you catch/use ``MongoEngineConnectionError`` in your code, you'll have to rename it.
- BREAKING CHANGE: Positional arguments when instantiating a document are no longer supported. #2103
- From now on keyword arguments (e.g. ``Doc(field_name=value)``) are required.
- BREAKING CHANGE: A ``LazyReferenceField`` is now stored in the ``_data`` field of its parent as a ``DBRef``, ``Document``, or ``EmbeddedDocument`` (``ObjectId`` is no longer allowed). #2182
- DEPRECATION: ``Q.empty`` & ``QNode.empty`` are marked as deprecated and will be removed in a next version of MongoEngine. #2210
- Added ability to check if Q or QNode are empty by parsing them to bool.
- Instead of ``Q(name="John").empty`` use ``not Q(name="John")``.
- Fix updating/modifying/deleting/reloading a document that's sharded by a field with ``db_field`` specified. #2125
- Only set no_cursor_timeout when requested (fixes an incompatibility with MongoDB 4.2) #2148
- ``ListField`` now accepts an optional ``max_length`` parameter. #2110
- Improve error message related to InvalidDocumentError #2180
- Added BulkWriteError to replace NotUniqueError which was misleading in bulk write insert #2152
- Added ability to compare Q and Q operations #2204
- Added ability to use a db alias on query_counter #2194
- Added ability to specify collations for querysets with ``Doc.objects.collation`` #2024
- Fix updates of a list field by negative index #2094
- Switch from nosetest to pytest as test runner #2114
- The codebase is now formatted using ``black``. #2109
- Documentation improvements:
- Documented how `pymongo.monitoring` can be used to log all queries issued by MongoEngine to the driver.
Changes in 0.18.2
=================
- Replace deprecated PyMongo v2.x methods with their v3.x equivalents in the ``SequenceField``. #2097
- Various code clarity and documentation improvements.
Changes in 0.18.1
=================
- Fix a bug introduced in 0.18.0 which was causing ``Document.save`` to update all the fields instead of updating only the modified fields. This bug only occurred when using a custom PK. #2082
- Add Python 3.7 to Travis CI. #2058
Changes in 0.18.0
=================
- Drop support for EOL'd MongoDB v2.6, v3.0, and v3.2.
- MongoEngine now requires PyMongo >= v3.4. Travis CI now tests against MongoDB v3.4 v3.6 and PyMongo v3.4 v3.6. #2017 #2066
- Improve performance by avoiding a call to ``to_mongo`` in ``Document.save``. #2049
- Connection/disconnection improvements:
- Expose ``mongoengine.connection.disconnect`` and ``mongoengine.connection.disconnect_all``.
- Fix disconnecting. #566 #1599 #605 #607 #1213 #565
- Improve documentation of ``connect``/``disconnect``.
- Fix issue when using multiple connections to the same mongo with different credentials. #2047
- ``connect`` fails immediately when db name contains invalid characters. #2031 #1718
- Fix the default write concern of ``Document.save`` that was overwriting the connection write concern. #568
- Fix querying on ``List(EmbeddedDocument)`` subclasses fields. #1961 #1492
- Fix querying on ``(Generic)EmbeddedDocument`` subclasses fields. #475
- Fix ``QuerySet.aggregate`` so that it takes limit and skip value into account. #2029
- Generate unique indices for ``SortedListField`` and ``EmbeddedDocumentListFields``. #2020
- BREAKING CHANGE: Changed the behavior of a custom field validator (i.e ``validation`` parameter of a ``Field``). It is now expected to raise a ``ValidationError`` instead of returning ``True``/``False``. #2050
- BREAKING CHANGES (associated with connection/disconnection fixes):
- Calling ``connect`` 2 times with the same alias and different parameter will raise an error (should call ``disconnect`` first).
- ``disconnect`` now clears ``mongoengine.connection._connection_settings``.
- ``disconnect`` now clears the cached attribute ``Document._collection``.
- BREAKING CHANGE: ``EmbeddedDocument.save`` & ``.reload`` no longer exist. #1552
Changes in 0.17.0
=================
- POTENTIAL BREAKING CHANGE: All result fields are now passed, including internal fields (``_cls``, ``_id``) when using ``QuerySet.as_pymongo``. #1976
- Document a BREAKING CHANGE introduced in 0.15.3 and not reported at that time. #1995
- DEPRECATION: ``EmbeddedDocument.save`` & ``.reload`` are marked as deprecated and will be removed in a next version of MongoEngine. #1552
- Fix ``QuerySet.only`` working improperly after using ``QuerySet.count`` of the same instance of a ``QuerySet``.
- Fix ``batch_size`` that was not copied when cloning a ``QuerySet`` object. #2011
- Fix ``InvalidStringData`` error when using ``modify`` on a ``BinaryField``. #1127
- Fix test suite and CI to support MongoDB v3.4. #1445
- Fix reference fields querying the database on each access if value contains orphan DBRefs.
Changes in 0.16.3
=================
- Fix ``$push`` with the ``$position`` operator not working with lists in embedded documents. #1965
Changes in 0.16.2
=================
- Fix ``Document.save`` that fails when called with ``write_concern=None`` (regression of 0.16.1). #1958
Changes in 0.16.1
=================
- Fix ``_cls`` that is not set properly in the ``Document`` constructor (regression). #1950
- Fix a bug in the ``_delta`` method - update of a ``ListField`` depends on an unrelated dynamic field update. #1733
- Remove PyMongo's deprecated ``Collection.save`` method and use ``Collection.insert_one`` instead. #1899
Changes in 0.16.0
=================
- POTENTIAL BREAKING CHANGES:
- ``EmbeddedDocumentField`` will no longer accept references to Document classes in its constructor. #1661
- Get rid of the ``basecls`` parameter from the ``DictField`` constructor (dead code). #1876
- Default value of the ``ComplexDateTime`` field is now ``None`` (and no longer the current datetime). #1368
- Fix an unhashable ``TypeError`` when referencing a ``Document`` with a compound key in an ``EmbeddedDocument``. #1685
- Fix a bug where an ``EmbeddedDocument`` with the same id as its parent would not be tracked for changes. #1768
- Fix the fact that a bulk ``QuerySet.insert`` was not setting primary keys of inserted document instances. #1919
- Fix a bug when referencing an abstract class in a ``ReferenceField``. #1920
- Allow modifications to the document made in ``pre_save_post_validation`` to be taken into account. #1202
- Replace MongoDB v2.4 tests in Travis CI with MongoDB v3.2. #1903
- Fix side effects of using ``QuerySet.no_dereference`` on other documents. #1677
- Fix ``TypeError`` when using lazy Django translation objects as translated choices. #1879
- Improve Python 2-3 codebase compatibility. #1889
- Fix support for changing the default value of the ``ComplexDateTime`` field. #1368
- Improve error message in case an ``EmbeddedDocumentListField`` receives an ``EmbeddedDocument`` instance instead of a list. #1877
- Fix the ``inc`` and ``dec`` operators for the ``DecimalField``. #1517 #1320
- Ignore ``killcursors`` queries in ``query_counter`` context manager. #1869
- Fix the fact that ``query_counter`` was modifying the initial profiling level in case it was != 0. #1870
- Repair the ``no_sub_classes`` context manager + fix the fact that it was swallowing exceptions. #1865
- Fix index creation error that was swallowed by ``hasattr`` under Python 2. #1688
- ``QuerySet.limit`` function behaviour: Passing 0 as parameter will return all the documents in the cursor. #1611
- Bulk insert updates the IDs of the input documents instances. #1919
- Fix a harmless bug related to ``GenericReferenceField`` where modifications in the generic-referenced document were tracked in the parent. #1934
- Improve validation of the ``BinaryField``. #273
- Implement lazy regex compiling in Field classes to improve ``import mongoengine`` performance. #1806
- Update ``GridFSProxy.__str__`` so that it would always print both the filename and grid_id. #710
- Add ``__repr__`` to ``Q`` and ``QCombination`` classes. #1843
- Fix bug in the ``BaseList.__iter__`` operator (was occuring when modifying a BaseList while iterating over it). #1676
- Add a ``DateField``. #513
- Various improvements to the documentation.
- Various code quality improvements.
Changes in 0.15.3
=================
- ``Queryset.update/update_one`` methods now return an ``UpdateResult`` when ``full_result=True`` is provided and no longer a dict. #1491
- Improve ``LazyReferenceField`` and ``GenericLazyReferenceField`` with nested fields. #1704
- Fix the subfield resolve error in ``generic_emdedded_document`` query. #1651 #1652
- Use each modifier only with ``$position``. #1673 #1675
- Fix validation errors in the ``GenericEmbeddedDocumentField``. #1067
- Update cached fields when a ``fields`` argument is given. #1712
- Add a ``db`` parameter to ``register_connection`` for compatibility with ``connect``.
- Use PyMongo v3.x's ``insert_one`` and ``insert_many`` in ``Document.insert``. #1491
- Use PyMongo v3.x's ``update_one`` and ``update_many`` in ``Document.update`` and ``QuerySet.update``. #1491
- Fix how ``reload(fields)`` affects changed fields. #1371
- Fix a bug where the read-only access to the database fails when trying to create indexes. #1338
Changes in 0.15.0
=================
- Add ``LazyReferenceField`` and ``GenericLazyReferenceField``. #1230
Changes in 0.14.1
=================
- Remove ``SemiStrictDict`` and start using a regular dict for ``BaseDocument._data``. #1630
- Add support for the ``$position`` param in the ``$push`` operator. #1566
- Fix ``DateTimeField`` interpreting an empty string as today. #1533
- Add a missing ``__ne__`` method to the ``GridFSProxy`` class. #1632
- Fix ``BaseQuerySet._fields_to_db_fields``. #1553
Changes in 0.14.0
=================
- BREAKING CHANGE: Remove the ``coerce_types`` param from ``QuerySet.as_pymongo``. #1549
- POTENTIAL BREAKING CHANGE: Make ``EmbeddedDocument`` not hashable by default. #1528
- Improve code quality. #1531, #1540, #1541, #1547
Changes in 0.13.0 Changes in 0.13.0
================= =================
- POTENTIAL BREAKING CHANGE: Added Unicode support to the ``EmailField``, see docs/upgrade.rst for details. - POTENTIAL BREAKING CHANGE: Added Unicode support to the `EmailField`, see
docs/upgrade.rst for details.
Changes in 0.12.0 Changes in 0.12.0
================= =================
- POTENTIAL BREAKING CHANGE: Fix ``limit``/``skip``/``hint``/``batch_size`` chaining. #1476 - POTENTIAL BREAKING CHANGE: Fixed limit/skip/hint/batch_size chaining #1476
- POTENTIAL BREAKING CHANGE: Change a public ``QuerySet.clone_into`` method to a private ``QuerySet._clone_into``. #1476 - POTENTIAL BREAKING CHANGE: Changed a public `QuerySet.clone_into` method to a private `QuerySet._clone_into` #1476
- Fix the way ``Document.objects.create`` works with duplicate IDs. #1485 - Fixed the way `Document.objects.create` works with duplicate IDs #1485
- Fix connecting to a replica set with PyMongo 2.x. #1436 - Fixed connecting to a replica set with PyMongo 2.x #1436
- Fix using sets in field choices. #1481 - Fixed using sets in field choices #1481
- Fix deleting items from a ``ListField``. #1318 - Fixed deleting items from a `ListField` #1318
- Fix an obscure error message when filtering by ``field__in=non_iterable``. #1237 - Fixed an obscure error message when filtering by `field__in=non_iterable`. #1237
- Fix behavior of a ``dec`` update operator. #1450 - Fixed behavior of a `dec` update operator #1450
- Add a ``rename`` update operator. #1454 - Added a `rename` update operator #1454
- Add validation for the ``db_field`` parameter. #1448 - Added validation for the `db_field` parameter #1448
- Fix the error message displayed when querying an ``EmbeddedDocumentField`` by an invalid value. #1440 - Fixed the error message displayed when querying an `EmbeddedDocumentField` by an invalid value #1440
- Fix the error message displayed when validating Unicode URLs. #1486 - Fixed the error message displayed when validating unicode URLs #1486
- Raise an error when trying to save an abstract document. #1449 - Raise an error when trying to save an abstract document #1449
Changes in 0.11.0 Changes in 0.11.0
================= =================
- BREAKING CHANGE: Rename ``ConnectionError`` to ``MongoEngineConnectionError`` since the former is a built-in exception name in Python v3.x. #1428 - BREAKING CHANGE: Renamed `ConnectionError` to `MongoEngineConnectionError` since the former is a built-in exception name in Python v3.x. #1428
- BREAKING CHANGE: Drop Python v2.6 support. #1428 - BREAKING CHANGE: Dropped Python 2.6 support. #1428
- BREAKING CHANGE: ``from mongoengine.base import ErrorClass`` won't work anymore for any error from ``mongoengine.errors`` (e.g. ``ValidationError``). Use ``from mongoengine.errors import ErrorClass instead``. #1428 - BREAKING CHANGE: `from mongoengine.base import ErrorClass` won't work anymore for any error from `mongoengine.errors` (e.g. `ValidationError`). Use `from mongoengine.errors import ErrorClass instead`. #1428
- BREAKING CHANGE: Accessing a broken reference will raise a ``DoesNotExist`` error. In the past it used to return ``None``. #1334 - BREAKING CHANGE: Accessing a broken reference will raise a `DoesNotExist` error. In the past it used to return `None`. #1334
- Fix absent rounding for the ``DecimalField`` when ``force_string`` is set. #1103 - Fixed absent rounding for DecimalField when `force_string` is set. #1103
Changes in 0.10.8 Changes in 0.10.8
================= =================
- Add support for ``QuerySet.batch_size``. (#1426) - Added support for QuerySet.batch_size (#1426)
- Fix a query set iteration within an iteration. #1427 - Fixed query set iteration within iteration #1427
- Fix an issue where specifying a MongoDB URI host would override more information than it should. #1421 - Fixed an issue where specifying a MongoDB URI host would override more information than it should #1421
- Add an ability to filter the ``GenericReferenceField`` by an ``ObjectId`` and a ``DBRef``. #1425 - Added ability to filter the generic reference field by ObjectId and DBRef #1425
- Fix cascading deletes for models with a custom primary key field. #1247 - Fixed delete cascade for models with a custom primary key field #1247
- Add ability to specify an authentication mechanism (e.g. X.509). #1333 - Added ability to specify an authentication mechanism (e.g. X.509) #1333
- Add support for falsy primary keys (e.g. ``doc.pk = 0``). #1354 - Added support for falsey primary keys (e.g. doc.pk = 0) #1354
- Fix ``QuerySet.sum/average`` for fields w/ an explicit ``db_field``. #1417 - Fixed QuerySet#sum/average for fields w/ explicit db_field #1417
- Fix filtering by ``embedded_doc=None``. #1422 - Fixed filtering by embedded_doc=None #1422
- Add support for ``Cursor.comment``. #1420 - Added support for cursor.comment #1420
- Fix ``doc.get_<field>_display`` methods. #1419 - Fixed doc.get_<field>_display #1419
- Fix the ``__repr__`` method of the ``StrictDict`` #1424 - Fixed __repr__ method of the StrictDict #1424
- Add a deprecation warning for Python v2.6. - Added a deprecation warning for Python 2.6
Changes in 0.10.7 Changes in 0.10.7
================= =================
- Drop Python 3.2 support #1390 - Dropped Python 3.2 support #1390
- Fix a bug where a dynamic doc has an index inside a dict field. #1278 - Fixed the bug where dynamic doc has index inside a dict field #1278
- Fix: ``ListField`` minus index assignment does not work. #1128 - Fixed: ListField minus index assignment does not work #1128
- Fix cascade delete mixing among collections. #1224 - Fixed cascade delete mixing among collections #1224
- Add ``signal_kwargs`` argument to ``Document.save``, ``Document.delete`` and ``BaseQuerySet.insert`` to be passed to signals calls. #1206 - Add `signal_kwargs` argument to `Document.save`, `Document.delete` and `BaseQuerySet.insert` to be passed to signals calls #1206
- Raise ``OperationError`` when trying to do a ``drop_collection`` on document with no collection set. - Raise `OperationError` when trying to do a `drop_collection` on document with no collection set.
- Fix a bug where a count on ``ListField`` of ``EmbeddedDocumentField`` fails. #1187 - count on ListField of EmbeddedDocumentField fails. #1187
- Fix ``LongField`` values stored as int32 in Python 3. #1253 - Fixed long fields stored as int32 in Python 3. #1253
- ``MapField`` now handles unicode keys correctly. #1267 - MapField now handles unicodes keys correctly. #1267
- ``ListField`` now handles negative indicies correctly. #1270 - ListField now handles negative indicies correctly. #1270
- Fix an ``AttributeError`` when initializing an ``EmbeddedDocument`` with positional args. #681 - Fixed AttributeError when initializing EmbeddedDocument with positional args. #681
- Fix a ``no_cursor_timeout`` error with PyMongo v3.x. #1304 - Fixed no_cursor_timeout error with pymongo 3.0+ #1304
- Replace map-reduce based ``QuerySet.sum/average`` with aggregation-based implementations. #1336 - Replaced map-reduce based QuerySet.sum/average with aggregation-based implementations #1336
- Fix support for ``__`` to escape field names that match operators' names in ``update``. #1351 - Fixed support for `__` to escape field names that match operators names in `update` #1351
- Fix ``BaseDocument._mark_as_changed``. #1369 - Fixed BaseDocument#_mark_as_changed #1369
- Add support for pickling ``QuerySet`` instances. #1397 - Added support for pickling QuerySet instances. #1397
- Fix connecting to a list of hosts. #1389 - Fixed connecting to a list of hosts #1389
- Fix a bug where accessing broken references wouldn't raise a ``DoesNotExist`` error. #1334 - Fixed a bug where accessing broken references wouldn't raise a DoesNotExist error #1334
- Fix not being able to specify ``use_db_field=False`` on ``ListField(EmbeddedDocumentField)`` instances. #1218 - Fixed not being able to specify use_db_field=False on ListField(EmbeddedDocumentField) instances #1218
- Improvements to the dictionary field's docs. #1383 - Improvements to the dictionary fields docs #1383
Changes in 0.10.6 Changes in 0.10.6
================= =================
- Add support for mocking MongoEngine based on mongomock. #1151 - Add support for mocking MongoEngine based on mongomock. #1151
- Fix not being able to run tests on Windows. #1153 - Fixed not being able to run tests on Windows. #1153
- Allow creation of sparse compound indexes. #1114 - Allow creation of sparse compound indexes. #1114
- count on ListField of EmbeddedDocumentField fails. #1187
Changes in 0.10.5 Changes in 0.10.5
================= =================
@ -308,12 +87,12 @@ Changes in 0.10.5
Changes in 0.10.4 Changes in 0.10.4
================= =================
- ``SaveConditionError`` is now importable from the top level package. #1165 - SaveConditionError is now importable from the top level package. #1165
- Add a ``QuerySet.upsert_one`` method. #1157 - upsert_one method added. #1157
Changes in 0.10.3 Changes in 0.10.3
================= =================
- Fix ``read_preference`` (it had chaining issues with PyMongo v2.x and it didn't work at all with PyMongo v3.x). #1042 - Fix `read_preference` (it had chaining issues with PyMongo 2.x and it didn't work at all with PyMongo 3.x) #1042
Changes in 0.10.2 Changes in 0.10.2
================= =================
@ -323,16 +102,16 @@ Changes in 0.10.2
Changes in 0.10.1 Changes in 0.10.1
================= =================
- Fix infinite recursion with cascade delete rules under specific conditions. #1046 - Fix infinite recursion with CASCADE delete rules under specific conditions. #1046
- Fix ``CachedReferenceField`` bug when loading cached docs as ``DBRef`` but failing to save them. #1047 - Fix CachedReferenceField bug when loading cached docs as DBRef but failing to save them. #1047
- Fix ignored chained options. #842 - Fix ignored chained options #842
- ``Document.save``'s ``save_condition`` error raises a ``SaveConditionError`` exception. #1070 - Document save's save_condition error raises `SaveConditionError` exception #1070
- Fix ``Document.reload`` for the ``DynamicDocument``. #1050 - Fix Document.reload for DynamicDocument. #1050
- ``StrictDict`` & ``SemiStrictDict`` are shadowed at init time. #1105 - StrictDict & SemiStrictDict are shadowed at init time. #1105
- Fix ``ListField`` negative index assignment not working. #1119 - Fix ListField minus index assignment does not work. #1119
- Remove code that marks a field as changed when the field has a default value but does not exist in the database. #1126 - Remove code that marks field as changed when the field has default but not existed in database #1126
- Remove test dependencies (nose and rednose) from install dependencies. #1079 - Remove test dependencies (nose and rednose) from install dependencies list. #1079
- Recursively build a query when using the ``elemMatch`` operator. #1130 - Recursively build query when using elemMatch operator. #1130
- Fix instance back references for lists of embedded documents. #1131 - Fix instance back references for lists of embedded documents. #1131
Changes in 0.10.0 Changes in 0.10.0
@ -343,7 +122,7 @@ Changes in 0.10.0
- Removed get_or_create() deprecated since 0.8.0. #300 - Removed get_or_create() deprecated since 0.8.0. #300
- Improve Document._created status when switch collection and db #1020 - Improve Document._created status when switch collection and db #1020
- Queryset update doesn't go through field validation #453 - Queryset update doesn't go through field validation #453
- Added support for specifying authentication source as option ``authSource`` in URI. #967 - Added support for specifying authentication source as option `authSource` in URI. #967
- Fixed mark_as_changed to handle higher/lower level fields changed. #927 - Fixed mark_as_changed to handle higher/lower level fields changed. #927
- ListField of embedded docs doesn't set the _instance attribute when iterating over it #914 - ListField of embedded docs doesn't set the _instance attribute when iterating over it #914
- Support += and *= for ListField #595 - Support += and *= for ListField #595
@ -359,7 +138,7 @@ Changes in 0.10.0
- Fixes some internal _id handling issue. #961 - Fixes some internal _id handling issue. #961
- Updated URL and Email Field regex validators, added schemes argument to URLField validation. #652 - Updated URL and Email Field regex validators, added schemes argument to URLField validation. #652
- Capped collection multiple of 256. #1011 - Capped collection multiple of 256. #1011
- Added ``BaseQuerySet.aggregate_sum`` and ``BaseQuerySet.aggregate_average`` methods. - Added `BaseQuerySet.aggregate_sum` and `BaseQuerySet.aggregate_average` methods.
- Fix for delete with write_concern {'w': 0}. #1008 - Fix for delete with write_concern {'w': 0}. #1008
- Allow dynamic lookup for more than two parts. #882 - Allow dynamic lookup for more than two parts. #882
- Added support for min_distance on geo queries. #831 - Added support for min_distance on geo queries. #831
@ -368,10 +147,10 @@ Changes in 0.10.0
Changes in 0.9.0 Changes in 0.9.0
================ ================
- Update FileField when creating a new file #714 - Update FileField when creating a new file #714
- Added ``EmbeddedDocumentListField`` for Lists of Embedded Documents. #826 - Added `EmbeddedDocumentListField` for Lists of Embedded Documents. #826
- ComplexDateTimeField should fall back to None when null=True #864 - ComplexDateTimeField should fall back to None when null=True #864
- Request Support for $min, $max Field update operators #863 - Request Support for $min, $max Field update operators #863
- ``BaseDict`` does not follow ``setdefault`` #866 - `BaseDict` does not follow `setdefault` #866
- Add support for $type operator # 766 - Add support for $type operator # 766
- Fix tests for pymongo 2.8+ #877 - Fix tests for pymongo 2.8+ #877
- No module named 'django.utils.importlib' (Django dev) #872 - No module named 'django.utils.importlib' (Django dev) #872
@ -392,13 +171,13 @@ Changes in 0.9.0
- Stop ensure_indexes running on a secondaries unless connection is through mongos #746 - Stop ensure_indexes running on a secondaries unless connection is through mongos #746
- Not overriding default values when loading a subset of fields #399 - Not overriding default values when loading a subset of fields #399
- Saving document doesn't create new fields in existing collection #620 - Saving document doesn't create new fields in existing collection #620
- Added ``Queryset.aggregate`` wrapper to aggregation framework #703 - Added `Queryset.aggregate` wrapper to aggregation framework #703
- Added support to show original model fields on to_json calls instead of db_field #697 - Added support to show original model fields on to_json calls instead of db_field #697
- Added Queryset.search_text to Text indexes searchs #700 - Added Queryset.search_text to Text indexes searchs #700
- Fixed tests for Django 1.7 #696 - Fixed tests for Django 1.7 #696
- Follow ReferenceFields in EmbeddedDocuments with select_related #690 - Follow ReferenceFields in EmbeddedDocuments with select_related #690
- Added preliminary support for text indexes #680 - Added preliminary support for text indexes #680
- Added ``elemMatch`` operator as well - ``match`` is too obscure #653 - Added `elemMatch` operator as well - `match` is too obscure #653
- Added support for progressive JPEG #486 #548 - Added support for progressive JPEG #486 #548
- Allow strings to be used in index creation #675 - Allow strings to be used in index creation #675
- Fixed EmbeddedDoc weakref proxy issue #592 - Fixed EmbeddedDoc weakref proxy issue #592
@ -434,11 +213,11 @@ Changes in 0.9.0
- Increase email field length to accommodate new TLDs #726 - Increase email field length to accommodate new TLDs #726
- index_cls is ignored when deciding to set _cls as index prefix #733 - index_cls is ignored when deciding to set _cls as index prefix #733
- Make 'db' argument to connection optional #737 - Make 'db' argument to connection optional #737
- Allow atomic update for the entire ``DictField`` #742 - Allow atomic update for the entire `DictField` #742
- Added MultiPointField, MultiLineField, MultiPolygonField - Added MultiPointField, MultiLineField, MultiPolygonField
- Fix multiple connections aliases being rewritten #748 - Fix multiple connections aliases being rewritten #748
- Fixed a few instances where reverse_delete_rule was written as reverse_delete_rules. #791 - Fixed a few instances where reverse_delete_rule was written as reverse_delete_rules. #791
- Make ``in_bulk()`` respect ``no_dereference()`` #775 - Make `in_bulk()` respect `no_dereference()` #775
- Handle None from model __str__; Fixes #753 #754 - Handle None from model __str__; Fixes #753 #754
- _get_changed_fields fix for embedded documents with id field. #925 - _get_changed_fields fix for embedded documents with id field. #925
@ -492,15 +271,18 @@ Changes in 0.8.4
Changes in 0.8.3 Changes in 0.8.3
================ ================
- Fixed EmbeddedDocuments with ``id`` also storing ``_id`` (#402) - Fixed EmbeddedDocuments with `id` also storing `_id` (#402)
- Added get_proxy_object helper to filefields (#391) - Added get_proxy_object helper to filefields (#391)
- Added QuerySetNoCache and QuerySet.no_cache() for lower memory consumption (#365) - Added QuerySetNoCache and QuerySet.no_cache() for lower memory consumption (#365)
- Fixed sum and average mapreduce dot notation support (#375, #376, #393) - Fixed sum and average mapreduce dot notation support (#375, #376, #393)
- Fixed as_pymongo to return the id (#386) - Fixed as_pymongo to return the id (#386)
- Document.select_related() now respects ``db_alias`` (#377) - Document.select_related() now respects `db_alias` (#377)
- Reload uses shard_key if applicable (#384) - Reload uses shard_key if applicable (#384)
- Dynamic fields are ordered based on creation and stored in _fields_ordered (#396) - Dynamic fields are ordered based on creation and stored in _fields_ordered (#396)
- Fixed pickling dynamic documents ``_dynamic_fields`` (#387)
**Potential breaking change:** http://docs.mongoengine.org/en/latest/upgrade.html#to-0-8-3
- Fixed pickling dynamic documents `_dynamic_fields` (#387)
- Fixed ListField setslice and delslice dirty tracking (#390) - Fixed ListField setslice and delslice dirty tracking (#390)
- Added Django 1.5 PY3 support (#392) - Added Django 1.5 PY3 support (#392)
- Added match ($elemMatch) support for EmbeddedDocuments (#379) - Added match ($elemMatch) support for EmbeddedDocuments (#379)
@ -541,7 +323,7 @@ Changes in 0.8.0
================ ================
- Fixed querying ReferenceField custom_id (#317) - Fixed querying ReferenceField custom_id (#317)
- Fixed pickle issues with collections (#316) - Fixed pickle issues with collections (#316)
- Added ``get_next_value`` preview for SequenceFields (#319) - Added `get_next_value` preview for SequenceFields (#319)
- Added no_sub_classes context manager and queryset helper (#312) - Added no_sub_classes context manager and queryset helper (#312)
- Querysets now utilises a local cache - Querysets now utilises a local cache
- Changed __len__ behaviour in the queryset (#247, #311) - Changed __len__ behaviour in the queryset (#247, #311)
@ -570,7 +352,7 @@ Changes in 0.8.0
- Updated connection to use MongoClient (#262, #274) - Updated connection to use MongoClient (#262, #274)
- Fixed db_alias and inherited Documents (#143) - Fixed db_alias and inherited Documents (#143)
- Documentation update for document errors (#124) - Documentation update for document errors (#124)
- Deprecated ``get_or_create`` (#35) - Deprecated `get_or_create` (#35)
- Updated inheritable objects created by upsert now contain _cls (#118) - Updated inheritable objects created by upsert now contain _cls (#118)
- Added support for creating documents with embedded documents in a single operation (#6) - Added support for creating documents with embedded documents in a single operation (#6)
- Added to_json and from_json to Document (#1) - Added to_json and from_json to Document (#1)
@ -691,7 +473,7 @@ Changes in 0.7.0
- Fixed UnboundLocalError in composite index with pk field (#88) - Fixed UnboundLocalError in composite index with pk field (#88)
- Updated ReferenceField's to optionally store ObjectId strings - Updated ReferenceField's to optionally store ObjectId strings
this will become the default in 0.8 (#89) this will become the default in 0.8 (#89)
- Added FutureWarning - save will default to ``cascade=False`` in 0.8 - Added FutureWarning - save will default to `cascade=False` in 0.8
- Added example of indexing embedded document fields (#75) - Added example of indexing embedded document fields (#75)
- Fixed ImageField resizing when forcing size (#80) - Fixed ImageField resizing when forcing size (#80)
- Add flexibility for fields handling bad data (#78) - Add flexibility for fields handling bad data (#78)
@ -787,7 +569,7 @@ Changes in 0.6.8
================ ================
- Fixed FileField losing reference when no default set - Fixed FileField losing reference when no default set
- Removed possible race condition from FileField (grid_file) - Removed possible race condition from FileField (grid_file)
- Added assignment to save, can now do: ``b = MyDoc(**kwargs).save()`` - Added assignment to save, can now do: `b = MyDoc(**kwargs).save()`
- Added support for pull operations on nested EmbeddedDocuments - Added support for pull operations on nested EmbeddedDocuments
- Added support for choices with GenericReferenceFields - Added support for choices with GenericReferenceFields
- Added support for choices with GenericEmbeddedDocumentFields - Added support for choices with GenericEmbeddedDocumentFields
@ -802,7 +584,7 @@ Changes in 0.6.7
- Fixed indexing on '_id' or 'pk' or 'id' - Fixed indexing on '_id' or 'pk' or 'id'
- Invalid data from the DB now raises a InvalidDocumentError - Invalid data from the DB now raises a InvalidDocumentError
- Cleaned up the Validation Error - docs and code - Cleaned up the Validation Error - docs and code
- Added meta ``auto_create_index`` so you can disable index creation - Added meta `auto_create_index` so you can disable index creation
- Added write concern options to inserts - Added write concern options to inserts
- Fixed typo in meta for index options - Fixed typo in meta for index options
- Bug fix Read preference now passed correctly - Bug fix Read preference now passed correctly
@ -843,6 +625,7 @@ Changes in 0.6.1
Changes in 0.6 Changes in 0.6
============== ==============
- Added FutureWarning to inherited classes not declaring 'allow_inheritance' as the default will change in 0.7 - Added FutureWarning to inherited classes not declaring 'allow_inheritance' as the default will change in 0.7
- Added support for covered indexes when inheritance is off - Added support for covered indexes when inheritance is off
- No longer always upsert on save for items with a '_id' - No longer always upsert on save for items with a '_id'
@ -1067,6 +850,7 @@ Changes in v0.1.3
querying takes place querying takes place
- A few minor bugfixes - A few minor bugfixes
Changes in v0.1.2 Changes in v0.1.2
================= =================
- Query values may be processed before before being used in queries - Query values may be processed before before being used in queries
@ -1075,6 +859,7 @@ Changes in v0.1.2
- Added ``BooleanField`` - Added ``BooleanField``
- Added ``Document.reload()`` method - Added ``Document.reload()`` method
Changes in v0.1.1 Changes in v0.1.1
================= =================
- Documents may now use capped collections - Documents may now use capped collections

View File

@ -1,19 +1,16 @@
from mongoengine import * from mongoengine import *
connect("tumblelog") connect('tumblelog')
class Comment(EmbeddedDocument): class Comment(EmbeddedDocument):
content = StringField() content = StringField()
name = StringField(max_length=120) name = StringField(max_length=120)
class User(Document): class User(Document):
email = StringField(required=True) email = StringField(required=True)
first_name = StringField(max_length=50) first_name = StringField(max_length=50)
last_name = StringField(max_length=50) last_name = StringField(max_length=50)
class Post(Document): class Post(Document):
title = StringField(max_length=120, required=True) title = StringField(max_length=120, required=True)
author = ReferenceField(User) author = ReferenceField(User)
@ -21,57 +18,54 @@ class Post(Document):
comments = ListField(EmbeddedDocumentField(Comment)) comments = ListField(EmbeddedDocumentField(Comment))
# bugfix # bugfix
meta = {"allow_inheritance": True} meta = {'allow_inheritance': True}
class TextPost(Post): class TextPost(Post):
content = StringField() content = StringField()
class ImagePost(Post): class ImagePost(Post):
image_path = StringField() image_path = StringField()
class LinkPost(Post): class LinkPost(Post):
link_url = StringField() link_url = StringField()
Post.drop_collection() Post.drop_collection()
john = User(email="jdoe@example.com", first_name="John", last_name="Doe") john = User(email='jdoe@example.com', first_name='John', last_name='Doe')
john.save() john.save()
post1 = TextPost(title="Fun with MongoEngine", author=john) post1 = TextPost(title='Fun with MongoEngine', author=john)
post1.content = "Took a look at MongoEngine today, looks pretty cool." post1.content = 'Took a look at MongoEngine today, looks pretty cool.'
post1.tags = ["mongodb", "mongoengine"] post1.tags = ['mongodb', 'mongoengine']
post1.save() post1.save()
post2 = LinkPost(title="MongoEngine Documentation", author=john) post2 = LinkPost(title='MongoEngine Documentation', author=john)
post2.link_url = "http://tractiondigital.com/labs/mongoengine/docs" post2.link_url = 'http://tractiondigital.com/labs/mongoengine/docs'
post2.tags = ["mongoengine"] post2.tags = ['mongoengine']
post2.save() post2.save()
print("ALL POSTS") print 'ALL POSTS'
print() print
for post in Post.objects: for post in Post.objects:
print(post.title) print post.title
# print '=' * post.title.count() #print '=' * post.title.count()
print("=" * 20) print "=" * 20
if isinstance(post, TextPost): if isinstance(post, TextPost):
print(post.content) print post.content
if isinstance(post, LinkPost): if isinstance(post, LinkPost):
print("Link:", post.link_url) print 'Link:', post.link_url
print() print
print() print
print("POSTS TAGGED 'MONGODB'") print 'POSTS TAGGED \'MONGODB\''
print() print
for post in Post.objects(tags="mongodb"): for post in Post.objects(tags='mongodb'):
print(post.title) print post.title
print() print
num_posts = Post.objects(tags="mongodb").count() num_posts = Post.objects(tags='mongodb').count()
print('Found %d posts with tag "mongodb"' % num_posts) print 'Found %d posts with tag "mongodb"' % num_posts

View File

@ -1,3 +1,4 @@
# -*- coding: utf-8 -*-
# #
# MongoEngine documentation build configuration file, created by # MongoEngine documentation build configuration file, created by
# sphinx-quickstart on Sun Nov 22 18:14:13 2009. # sphinx-quickstart on Sun Nov 22 18:14:13 2009.
@ -10,44 +11,40 @@
# All configuration values have a default; values that are commented out # All configuration values have a default; values that are commented out
# serve to show the default. # serve to show the default.
import os import sys, os
import sys
import sphinx_rtd_theme
import mongoengine
# If extensions (or modules to document with autodoc) are in another directory, # If extensions (or modules to document with autodoc) are in another directory,
# add these directories to sys.path here. If the directory is relative to the # add these directories to sys.path here. If the directory is relative to the
# documentation root, use os.path.abspath to make it absolute, like shown here. # documentation root, use os.path.abspath to make it absolute, like shown here.
sys.path.insert(0, os.path.abspath("..")) sys.path.insert(0, os.path.abspath('..'))
# -- General configuration ----------------------------------------------------- # -- General configuration -----------------------------------------------------
# Add any Sphinx extension module names here, as strings. They can be extensions # Add any Sphinx extension module names here, as strings. They can be extensions
# coming with Sphinx (named 'sphinx.ext.*') or your custom ones. # coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
extensions = ["sphinx.ext.autodoc", "sphinx.ext.todo", "readthedocs_ext.readthedocs"] extensions = ['sphinx.ext.autodoc', 'sphinx.ext.todo']
# Add any paths that contain templates here, relative to this directory. # Add any paths that contain templates here, relative to this directory.
templates_path = ["_templates"] templates_path = ['_templates']
# The suffix of source filenames. # The suffix of source filenames.
source_suffix = ".rst" source_suffix = '.rst'
# The encoding of source files. # The encoding of source files.
# source_encoding = 'utf-8' #source_encoding = 'utf-8'
# The master toctree document. # The master toctree document.
master_doc = "index" master_doc = 'index'
# General information about the project. # General information about the project.
project = "MongoEngine" project = u'MongoEngine'
copyright = "2009, MongoEngine Authors" # noqa: A001 copyright = u'2009, MongoEngine Authors'
# The version info for the project you're documenting, acts as replacement for # The version info for the project you're documenting, acts as replacement for
# |version| and |release|, also used in various other places throughout the # |version| and |release|, also used in various other places throughout the
# built documents. # built documents.
# #
import mongoengine
# The short X.Y version. # The short X.Y version.
version = mongoengine.get_version() version = mongoengine.get_version()
# The full version, including alpha/beta/rc tags. # The full version, including alpha/beta/rc tags.
@ -55,66 +52,66 @@ release = mongoengine.get_version()
# The language for content autogenerated by Sphinx. Refer to documentation # The language for content autogenerated by Sphinx. Refer to documentation
# for a list of supported languages. # for a list of supported languages.
# language = None #language = None
# There are two options for replacing |today|: either, you set today to some # There are two options for replacing |today|: either, you set today to some
# non-false value, then it is used: # non-false value, then it is used:
# today = '' #today = ''
# Else, today_fmt is used as the format for a strftime call. # Else, today_fmt is used as the format for a strftime call.
# today_fmt = '%B %d, %Y' #today_fmt = '%B %d, %Y'
# List of documents that shouldn't be included in the build. # List of documents that shouldn't be included in the build.
# unused_docs = [] #unused_docs = []
# List of directories, relative to source directory, that shouldn't be searched # List of directories, relative to source directory, that shouldn't be searched
# for source files. # for source files.
exclude_trees = ["_build"] exclude_trees = ['_build']
# The reST default role (used for this markup: `text`) to use for all documents. # The reST default role (used for this markup: `text`) to use for all documents.
# default_role = None #default_role = None
# If true, '()' will be appended to :func: etc. cross-reference text. # If true, '()' will be appended to :func: etc. cross-reference text.
# add_function_parentheses = True #add_function_parentheses = True
# If true, the current module name will be prepended to all description # If true, the current module name will be prepended to all description
# unit titles (such as .. function::). # unit titles (such as .. function::).
# add_module_names = True #add_module_names = True
# If true, sectionauthor and moduleauthor directives will be shown in the # If true, sectionauthor and moduleauthor directives will be shown in the
# output. They are ignored by default. # output. They are ignored by default.
# show_authors = False #show_authors = False
# The name of the Pygments (syntax highlighting) style to use. # The name of the Pygments (syntax highlighting) style to use.
pygments_style = "sphinx" pygments_style = 'sphinx'
# A list of ignored prefixes for module index sorting. # A list of ignored prefixes for module index sorting.
# modindex_common_prefix = [] #modindex_common_prefix = []
# -- Options for HTML output --------------------------------------------------- # -- Options for HTML output ---------------------------------------------------
# The theme to use for HTML and HTML Help pages. Major themes that come with # The theme to use for HTML and HTML Help pages. Major themes that come with
# Sphinx are currently 'default' and 'sphinxdoc'. # Sphinx are currently 'default' and 'sphinxdoc'.
html_theme = "sphinx_rtd_theme" html_theme = 'sphinx_rtd_theme'
# Theme options are theme-specific and customize the look and feel of a theme # Theme options are theme-specific and customize the look and feel of a theme
# further. For a list of options available for each theme, see the # further. For a list of options available for each theme, see the
# documentation. # documentation.
html_theme_options = {"canonical_url": "http://docs.mongoengine.org/en/latest/"} #html_theme_options = {}
# Add any paths that contain custom themes here, relative to this directory. # Add any paths that contain custom themes here, relative to this directory.
html_theme_path = [sphinx_rtd_theme.get_html_theme_path()] html_theme_path = ['_themes']
# The name for this set of Sphinx documents. If None, it defaults to # The name for this set of Sphinx documents. If None, it defaults to
# "<project> v<release> documentation". # "<project> v<release> documentation".
# html_title = None #html_title = None
# A shorter title for the navigation bar. Default is the same as html_title. # A shorter title for the navigation bar. Default is the same as html_title.
# html_short_title = None #html_short_title = None
# The name of an image file (relative to this directory) to place at the top # The name of an image file (relative to this directory) to place at the top
# of the sidebar. # of the sidebar.
# html_logo = None #html_logo = None
# The name of an image file (within the static path) to use as favicon of the # The name of an image file (within the static path) to use as favicon of the
# docs. This file should be a Windows icon file (.ico) being 16x16 or 32x32 # docs. This file should be a Windows icon file (.ico) being 16x16 or 32x32
@ -124,11 +121,11 @@ html_favicon = "favicon.ico"
# Add any paths that contain custom static files (such as style sheets) here, # Add any paths that contain custom static files (such as style sheets) here,
# relative to this directory. They are copied after the builtin static files, # relative to this directory. They are copied after the builtin static files,
# so a file named "default.css" will overwrite the builtin "default.css". # so a file named "default.css" will overwrite the builtin "default.css".
# html_static_path = ['_static'] #html_static_path = ['_static']
# If not '', a 'Last updated on:' timestamp is inserted at every page bottom, # If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
# using the given strftime format. # using the given strftime format.
# html_last_updated_fmt = '%b %d, %Y' #html_last_updated_fmt = '%b %d, %Y'
# If true, SmartyPants will be used to convert quotes and dashes to # If true, SmartyPants will be used to convert quotes and dashes to
# typographically correct entities. # typographically correct entities.
@ -136,68 +133,73 @@ html_use_smartypants = True
# Custom sidebar templates, maps document names to template names. # Custom sidebar templates, maps document names to template names.
html_sidebars = { html_sidebars = {
"index": ["globaltoc.html", "searchbox.html"], 'index': ['globaltoc.html', 'searchbox.html'],
"**": ["localtoc.html", "relations.html", "searchbox.html"], '**': ['localtoc.html', 'relations.html', 'searchbox.html']
} }
# Additional templates that should be rendered to pages, maps page names to # Additional templates that should be rendered to pages, maps page names to
# template names. # template names.
# html_additional_pages = {} #html_additional_pages = {}
# If false, no module index is generated. # If false, no module index is generated.
# html_use_modindex = True #html_use_modindex = True
# If false, no index is generated. # If false, no index is generated.
# html_use_index = True #html_use_index = True
# If true, the index is split into individual pages for each letter. # If true, the index is split into individual pages for each letter.
# html_split_index = False #html_split_index = False
# If true, links to the reST sources are added to the pages. # If true, links to the reST sources are added to the pages.
# html_show_sourcelink = True #html_show_sourcelink = True
# If true, an OpenSearch description file will be output, and all pages will # If true, an OpenSearch description file will be output, and all pages will
# contain a <link> tag referring to it. The value of this option must be the # contain a <link> tag referring to it. The value of this option must be the
# base URL from which the finished HTML is served. # base URL from which the finished HTML is served.
# html_use_opensearch = '' #html_use_opensearch = ''
# If nonempty, this is the file name suffix for HTML files (e.g. ".xhtml"). # If nonempty, this is the file name suffix for HTML files (e.g. ".xhtml").
# html_file_suffix = '' #html_file_suffix = ''
# Output file base name for HTML help builder. # Output file base name for HTML help builder.
htmlhelp_basename = "MongoEnginedoc" htmlhelp_basename = 'MongoEnginedoc'
# -- Options for LaTeX output -------------------------------------------------- # -- Options for LaTeX output --------------------------------------------------
# The paper size ('letter' or 'a4'). # The paper size ('letter' or 'a4').
latex_paper_size = "a4" latex_paper_size = 'a4'
# The font size ('10pt', '11pt' or '12pt'). # The font size ('10pt', '11pt' or '12pt').
# latex_font_size = '10pt' #latex_font_size = '10pt'
# Grouping the document tree into LaTeX files. List of tuples # Grouping the document tree into LaTeX files. List of tuples
# (source start file, target name, title, author, documentclass [howto/manual]). # (source start file, target name, title, author, documentclass [howto/manual]).
latex_documents = [ latex_documents = [
("index", "MongoEngine.tex", "MongoEngine Documentation", "Ross Lawley", "manual") ('index', 'MongoEngine.tex', 'MongoEngine Documentation',
'Ross Lawley', 'manual'),
] ]
# The name of an image file (relative to this directory) to place at the top of # The name of an image file (relative to this directory) to place at the top of
# the title page. # the title page.
# latex_logo = None #latex_logo = None
# For "manual" documents, if this is true, then toplevel headings are parts, # For "manual" documents, if this is true, then toplevel headings are parts,
# not chapters. # not chapters.
# latex_use_parts = False #latex_use_parts = False
# Additional stuff for the LaTeX preamble. # Additional stuff for the LaTeX preamble.
# latex_preamble = '' #latex_preamble = ''
# Documents to append as an appendix to all manuals. # Documents to append as an appendix to all manuals.
# latex_appendices = [] #latex_appendices = []
# If false, no module index is generated. # If false, no module index is generated.
# latex_use_modindex = True #latex_use_modindex = True
autoclass_content = "both" autoclass_content = 'both'
html_theme_options = dict(
canonical_url='http://docs.mongoengine.org/en/latest/'
)

View File

@ -13,7 +13,7 @@ Help Wanted!
The MongoEngine team is looking for help contributing and maintaining a new The MongoEngine team is looking for help contributing and maintaining a new
Django extension for MongoEngine! If you have Django experience and would like Django extension for MongoEngine! If you have Django experience and would like
to help contribute to the project, please get in touch on the to help contribute to the project, please get in touch on the
`mailing list <http://groups.google.com/group/mongoengine-users>`_ or by `mailing list <http://groups.google.com/group/mongoengine-users>`_ or by
simply contributing on simply contributing on
`GitHub <https://github.com/MongoEngine/django-mongoengine>`_. `GitHub <https://github.com/MongoEngine/django-mongoengine>`_.

View File

@ -1,12 +0,0 @@
==========================
Frequently Asked Questions
==========================
Does MongoEngine support asynchronous drivers (Motor, TxMongo)?
---------------------------------------------------------------
No, MongoEngine is exclusively based on PyMongo and isn't designed to support other driver.
If this is a requirement for your project, check the alternative: `uMongo`_ and `MotorEngine`_.
.. _uMongo: https://umongo.readthedocs.io/
.. _MotorEngine: https://motorengine.readthedocs.io/

View File

@ -4,76 +4,33 @@
Connecting to MongoDB Connecting to MongoDB
===================== =====================
Connections in MongoEngine are registered globally and are identified with aliases. To connect to a running instance of :program:`mongod`, use the
If no ``alias`` is provided during the connection, it will use "default" as alias. :func:`~mongoengine.connect` function. The first argument is the name of the
database to connect to::
To connect to a running instance of :program:`mongod`, use the :func:`~mongoengine.connect`
function. The first argument is the name of the database to connect to::
from mongoengine import connect from mongoengine import connect
connect('project1') connect('project1')
By default, MongoEngine assumes that the :program:`mongod` instance is running By default, MongoEngine assumes that the :program:`mongod` instance is running
on **localhost** on port **27017**. on **localhost** on port **27017**. If MongoDB is running elsewhere, you should
provide the :attr:`host` and :attr:`port` arguments to
:func:`~mongoengine.connect`::
If MongoDB is running elsewhere, you need to provide details on how to connect. There are two ways of connect('project1', host='192.168.1.35', port=12345)
doing this. Using a connection string in URI format (**this is the preferred method**) or individual attributes
provided as keyword arguments.
Connect with URI string If the database requires authentication, :attr:`username` and :attr:`password`
======================= arguments should be provided::
When using a connection string in URI format you should specify the connection details connect('project1', username='webapp', password='pwd123')
as the :attr:`host` to :func:`~mongoengine.connect`. In a web application context for instance, the URI
is typically read from the config file::
connect(host="mongodb://127.0.0.1:27017/my_db") URI style connections are also supported -- just supply the URI as
the :attr:`host` to
:func:`~mongoengine.connect`::
If the database requires authentication, you can specify it in the connect('project1', host='mongodb://localhost/database_name')
URI. As each database can have its own users configured, you need to tell MongoDB
where to look for the user you are working with, that's what the ``?authSource=admin`` bit
of the MongoDB connection string is for::
# Connects to 'my_db' database by authenticating
# with given credentials against the 'admin' database (by default as authSource isn't provided)
connect(host="mongodb://my_user:my_password@127.0.0.1:27017/my_db")
# Equivalent to previous connection but explicitly states that
# it should use admin as the authentication source database
connect(host="mongodb://my_user:my_password@hostname:port/my_db?authSource=admin")
# Connects to 'my_db' database by authenticating
# with given credentials against that same database
connect(host="mongodb://my_user:my_password@127.0.0.1:27017/my_db?authSource=my_db")
The URI string can also be used to configure advanced parameters like ssl, replicaSet, etc. For more
information or example about URI string, you can refer to the `official doc <https://docs.mongodb.com/manual/reference/connection-string/>`_::
connect(host="mongodb://my_user:my_password@127.0.0.1:27017/my_db?authSource=admin&ssl=true&replicaSet=globaldb")
.. note:: URI containing SRV records (e.g "mongodb+srv://server.example.com/") can be used as well
Connect with keyword attributes
===============================
The second option for specifying the connection details is to provide the information as keyword
attributes to :func:`~mongoengine.connect`::
connect('my_db', host='127.0.0.1', port=27017)
If the database requires authentication, :attr:`username`, :attr:`password`
and :attr:`authentication_source` arguments should be provided::
connect('my_db', username='my_user', password='my_password', authentication_source='admin')
The set of attributes that :func:`~mongoengine.connect` recognizes includes but is not limited to:
:attr:`host`, :attr:`port`, :attr:`read_preference`, :attr:`username`, :attr:`password`, :attr:`authentication_source`, :attr:`authentication_mechanism`,
:attr:`replicaset`, :attr:`tls`, etc. Most of the parameters accepted by `pymongo.MongoClient <https://pymongo.readthedocs.io/en/stable/api/pymongo/mongo_client.html#pymongo.mongo_client.MongoClient>`_
can be used with :func:`~mongoengine.connect` and will simply be forwarded when instantiating the `pymongo.MongoClient`.
.. note:: Database, username and password from URI string overrides .. note:: Database, username and password from URI string overrides
corresponding parameters in :func:`~mongoengine.connect`, this should corresponding parameters in :func:`~mongoengine.connect`: ::
obviously be avoided: ::
connect( connect(
db='test', db='test',
@ -82,19 +39,25 @@ can be used with :func:`~mongoengine.connect` and will simply be forwarded when
host='mongodb://admin:qwerty@localhost/production' host='mongodb://admin:qwerty@localhost/production'
) )
will establish connection to ``production`` database using ``admin`` username and ``qwerty`` password. will establish connection to ``production`` database using
``admin`` username and ``qwerty`` password.
.. note:: Calling :func:`~mongoengine.connect` without argument will establish Replica Sets
a connection to the "test" database by default ============
Read Preferences MongoEngine supports connecting to replica sets::
================
As stated above, Read preferences are supported through the connection but also via individual from mongoengine import connect
# Regular connect
connect('dbname', replicaset='rs-name')
# MongoDB URI-style connect
connect(host='mongodb://localhost/dbname?replicaSet=rs-name')
Read preferences are supported through the connection or via individual
queries by passing the read_preference :: queries by passing the read_preference ::
from pymongo import ReadPreference
Bar.objects().read_preference(ReadPreference.PRIMARY) Bar.objects().read_preference(ReadPreference.PRIMARY)
Bar.objects(read_preference=ReadPreference.PRIMARY) Bar.objects(read_preference=ReadPreference.PRIMARY)
@ -108,61 +71,28 @@ is used.
In the background this uses :func:`~mongoengine.register_connection` to In the background this uses :func:`~mongoengine.register_connection` to
store the data and you can register all aliases up front if required. store the data and you can register all aliases up front if required.
Documents defined in different database Individual documents can also support multiple databases by providing a
---------------------------------------
Individual documents can be attached to different databases by providing a
`db_alias` in their meta data. This allows :class:`~pymongo.dbref.DBRef` `db_alias` in their meta data. This allows :class:`~pymongo.dbref.DBRef`
objects to point across databases and collections. Below is an example schema, objects to point across databases and collections. Below is an example schema,
using 3 different databases to store data:: using 3 different databases to store data::
connect(alias='user-db-alias', db='user-db')
connect(alias='book-db-alias', db='book-db')
connect(alias='users-books-db-alias', db='users-books-db')
class User(Document): class User(Document):
name = StringField() name = StringField()
meta = {'db_alias': 'user-db-alias'} meta = {'db_alias': 'user-db'}
class Book(Document): class Book(Document):
name = StringField() name = StringField()
meta = {'db_alias': 'book-db-alias'} meta = {'db_alias': 'book-db'}
class AuthorBooks(Document): class AuthorBooks(Document):
author = ReferenceField(User) author = ReferenceField(User)
book = ReferenceField(Book) book = ReferenceField(Book)
meta = {'db_alias': 'users-books-db-alias'} meta = {'db_alias': 'users-books-db'}
Disconnecting an existing connection
------------------------------------
The function :func:`~mongoengine.disconnect` can be used to
disconnect a particular connection. This can be used to change a
connection globally::
from mongoengine import connect, disconnect
connect('a_db', alias='db1')
class User(Document):
name = StringField()
meta = {'db_alias': 'db1'}
disconnect(alias='db1')
connect('another_db', alias='db1')
.. note:: Calling :func:`~mongoengine.disconnect` without argument
will disconnect the "default" connection
.. note:: Since connections gets registered globally, it is important
to use the `disconnect` function from MongoEngine and not the
`disconnect()` method of an existing connection (pymongo.MongoClient)
.. note:: :class:`~mongoengine.Document` are caching the pymongo collection.
using `disconnect` ensures that it gets cleaned as well
Context Managers Context Managers
================ ================
Sometimes you may want to switch the database or collection to query against. Sometimes you may want to switch the database or collection to query against.
@ -189,7 +119,7 @@ access to the same User document across databases::
Switch Collection Switch Collection
----------------- -----------------
The :func:`~mongoengine.context_managers.switch_collection` context manager The :class:`~mongoengine.context_managers.switch_collection` context manager
allows you to change the collection for a given class allowing quick and easy allows you to change the collection for a given class allowing quick and easy
access to the same Group document across collection:: access to the same Group document across collection::

View File

@ -22,13 +22,11 @@ objects** as class attributes to the document class::
class Page(Document): class Page(Document):
title = StringField(max_length=200, required=True) title = StringField(max_length=200, required=True)
date_modified = DateTimeField(default=datetime.datetime.utcnow) date_modified = DateTimeField(default=datetime.datetime.now)
As BSON (the binary format for storing data in mongodb) is order dependent, As BSON (the binary format for storing data in mongodb) is order dependent,
documents are serialized based on their field order. documents are serialized based on their field order.
.. _dynamic-document-schemas:
Dynamic document schemas Dynamic document schemas
======================== ========================
One of the benefits of MongoDB is dynamic schemas for a collection, whilst data One of the benefits of MongoDB is dynamic schemas for a collection, whilst data
@ -78,21 +76,17 @@ are as follows:
* :class:`~mongoengine.fields.EmailField` * :class:`~mongoengine.fields.EmailField`
* :class:`~mongoengine.fields.EmbeddedDocumentField` * :class:`~mongoengine.fields.EmbeddedDocumentField`
* :class:`~mongoengine.fields.EmbeddedDocumentListField` * :class:`~mongoengine.fields.EmbeddedDocumentListField`
* :class:`~mongoengine.fields.EnumField`
* :class:`~mongoengine.fields.FileField` * :class:`~mongoengine.fields.FileField`
* :class:`~mongoengine.fields.FloatField` * :class:`~mongoengine.fields.FloatField`
* :class:`~mongoengine.fields.GenericEmbeddedDocumentField` * :class:`~mongoengine.fields.GenericEmbeddedDocumentField`
* :class:`~mongoengine.fields.GenericReferenceField` * :class:`~mongoengine.fields.GenericReferenceField`
* :class:`~mongoengine.fields.GenericLazyReferenceField`
* :class:`~mongoengine.fields.GeoPointField` * :class:`~mongoengine.fields.GeoPointField`
* :class:`~mongoengine.fields.ImageField` * :class:`~mongoengine.fields.ImageField`
* :class:`~mongoengine.fields.IntField` * :class:`~mongoengine.fields.IntField`
* :class:`~mongoengine.fields.ListField` * :class:`~mongoengine.fields.ListField`
* :class:`~mongoengine.fields.LongField`
* :class:`~mongoengine.fields.MapField` * :class:`~mongoengine.fields.MapField`
* :class:`~mongoengine.fields.ObjectIdField` * :class:`~mongoengine.fields.ObjectIdField`
* :class:`~mongoengine.fields.ReferenceField` * :class:`~mongoengine.fields.ReferenceField`
* :class:`~mongoengine.fields.LazyReferenceField`
* :class:`~mongoengine.fields.SequenceField` * :class:`~mongoengine.fields.SequenceField`
* :class:`~mongoengine.fields.SortedListField` * :class:`~mongoengine.fields.SortedListField`
* :class:`~mongoengine.fields.StringField` * :class:`~mongoengine.fields.StringField`
@ -159,7 +153,7 @@ arguments can be set on all fields:
An iterable (e.g. list, tuple or set) of choices to which the value of this An iterable (e.g. list, tuple or set) of choices to which the value of this
field should be limited. field should be limited.
Can either be nested tuples of value (stored in mongo) and a Can be either be a nested tuples of value (stored in mongo) and a
human readable key :: human readable key ::
SIZE = (('S', 'Small'), SIZE = (('S', 'Small'),
@ -179,21 +173,6 @@ arguments can be set on all fields:
class Shirt(Document): class Shirt(Document):
size = StringField(max_length=3, choices=SIZE) size = StringField(max_length=3, choices=SIZE)
:attr:`validation` (Optional)
A callable to validate the value of the field.
The callable takes the value as parameter and should raise a ValidationError
if validation fails
e.g ::
def _not_empty(val):
if not val:
raise ValidationError('value can not be empty')
class Person(Document):
name = StringField(validation=_not_empty)
:attr:`**kwargs` (Optional) :attr:`**kwargs` (Optional)
You can supply additional metadata as arbitrary additional keyword You can supply additional metadata as arbitrary additional keyword
arguments. You can not override existing attributes, however. Common arguments. You can not override existing attributes, however. Common
@ -233,9 +212,6 @@ document class as the first argument::
comment2 = Comment(content='Nice article!') comment2 = Comment(content='Nice article!')
page = Page(comments=[comment1, comment2]) page = Page(comments=[comment1, comment2])
Embedded documents can also leverage the flexibility of :ref:`dynamic-document-schemas:`
by inheriting :class:`~mongoengine.DynamicEmbeddedDocument`.
Dictionary Fields Dictionary Fields
----------------- -----------------
Often, an embedded document may be used instead of a dictionary generally Often, an embedded document may be used instead of a dictionary generally
@ -248,7 +224,7 @@ store; in this situation a :class:`~mongoengine.fields.DictField` is appropriate
user = ReferenceField(User) user = ReferenceField(User)
answers = DictField() answers = DictField()
survey_response = SurveyResponse(date=datetime.utcnow(), user=request.user) survey_response = SurveyResponse(date=datetime.now(), user=request.user)
response_form = ResponseForm(request.POST) response_form = ResponseForm(request.POST)
survey_response.answers = response_form.cleaned_data() survey_response.answers = response_form.cleaned_data()
survey_response.save() survey_response.save()
@ -295,12 +271,12 @@ as the constructor's argument::
content = StringField() content = StringField()
.. _many-to-many-with-listfields: .. _one-to-many-with-listfields:
Many to Many with ListFields One to Many with ListFields
''''''''''''''''''''''''''' '''''''''''''''''''''''''''
If you are implementing a many to many relationship via a list of references, If you are implementing a one to many relationship via a list of references,
then the references are stored as DBRefs and to query you need to pass an then the references are stored as DBRefs and to query you need to pass an
instance of the object to the query:: instance of the object to the query::
@ -341,6 +317,7 @@ supplying the :attr:`reverse_delete_rule` attributes on the
:class:`ReferenceField` definition, like this:: :class:`ReferenceField` definition, like this::
class ProfilePage(Document): class ProfilePage(Document):
...
employee = ReferenceField('Employee', reverse_delete_rule=mongoengine.CASCADE) employee = ReferenceField('Employee', reverse_delete_rule=mongoengine.CASCADE)
The declaration in this example means that when an :class:`Employee` object is The declaration in this example means that when an :class:`Employee` object is
@ -357,7 +334,7 @@ Its value can take any of the following constants:
Deletion is denied if there still exist references to the object being Deletion is denied if there still exist references to the object being
deleted. deleted.
:const:`mongoengine.NULLIFY` :const:`mongoengine.NULLIFY`
Any object's fields still referring to the object being deleted are set to None Any object's fields still referring to the object being deleted are removed
(using MongoDB's "unset" operation), effectively nullifying the relationship. (using MongoDB's "unset" operation), effectively nullifying the relationship.
:const:`mongoengine.CASCADE` :const:`mongoengine.CASCADE`
Any object containing fields that are referring to the object being deleted Any object containing fields that are referring to the object being deleted
@ -431,15 +408,28 @@ either a single field name, or a list or tuple of field names::
first_name = StringField() first_name = StringField()
last_name = StringField(unique_with='first_name') last_name = StringField(unique_with='first_name')
Skipping Document validation on save
------------------------------------
You can also skip the whole document validation process by setting
``validate=False`` when calling the :meth:`~mongoengine.document.Document.save`
method::
class Recipient(Document):
name = StringField()
email = EmailField()
recipient = Recipient(name='admin', email='root@localhost')
recipient.save() # will raise a ValidationError while
recipient.save(validate=False) # won't
Document collections Document collections
==================== ====================
Document classes that inherit **directly** from :class:`~mongoengine.Document` Document classes that inherit **directly** from :class:`~mongoengine.Document`
will have their own **collection** in the database. The name of the collection will have their own **collection** in the database. The name of the collection
is by default the name of the class converted to snake_case (e.g if your Document class is by default the name of the class, converted to lowercase (so in the example
is named `CompanyUser`, the corresponding collection would be `company_user`). If you need above, the collection would be called `page`). If you need to change the name
to change the name of the collection (e.g. to use MongoEngine with an existing database), of the collection (e.g. to use MongoEngine with an existing database), then
then create a class dictionary attribute called :attr:`meta` on your document, and create a class dictionary attribute called :attr:`meta` on your document, and
set :attr:`collection` to the name of the collection that you want your set :attr:`collection` to the name of the collection that you want your
document class to use:: document class to use::
@ -477,7 +467,7 @@ dictionary containing a full index definition.
A direction may be specified on fields by prefixing the field name with a A direction may be specified on fields by prefixing the field name with a
**+** (for ascending) or a **-** sign (for descending). Note that direction **+** (for ascending) or a **-** sign (for descending). Note that direction
only matters on compound indexes. Text indexes may be specified by prefixing only matters on multi-field indexes. Text indexes may be specified by prefixing
the field name with a **$**. Hashed indexes may be specified by prefixing the field name with a **$**. Hashed indexes may be specified by prefixing
the field name with a **#**:: the field name with a **#**::
@ -488,21 +478,19 @@ the field name with a **#**::
created = DateTimeField() created = DateTimeField()
meta = { meta = {
'indexes': [ 'indexes': [
'title', # single-field index 'title',
'$title', # text index '$title', # text index
'#title', # hashed index '#title', # hashed index
('title', '-rating'), # compound index ('title', '-rating'),
('category', '_cls'), # compound index ('category', '_cls'),
{ {
'fields': ['created'], 'fields': ['created'],
'expireAfterSeconds': 3600 # ttl index 'expireAfterSeconds': 3600
} }
] ]
} }
If a dictionary is passed then additional options become available. Valid options include, If a dictionary is passed then the following options are available:
but are not limited to:
:attr:`fields` (Default: None) :attr:`fields` (Default: None)
The fields to index. Specified in the same format as described above. The fields to index. Specified in the same format as described above.
@ -523,15 +511,8 @@ but are not limited to:
Allows you to automatically expire data from a collection by setting the Allows you to automatically expire data from a collection by setting the
time in seconds to expire the a field. time in seconds to expire the a field.
:attr:`name` (Optional)
Allows you to specify a name for the index
:attr:`collation` (Optional)
Allows to create case insensitive indexes (MongoDB v3.4+ only)
.. note:: .. note::
Additional options are forwarded as **kwargs to pymongo's create_index method.
Inheritance adds extra fields indices see: :ref:`document-inheritance`. Inheritance adds extra fields indices see: :ref:`document-inheritance`.
Global index default options Global index default options
@ -543,15 +524,15 @@ There are a few top level defaults for all indexes that can be set::
title = StringField() title = StringField()
rating = StringField() rating = StringField()
meta = { meta = {
'index_opts': {}, 'index_options': {},
'index_background': True, 'index_background': True,
'index_cls': False, 'index_drop_dups': True,
'auto_create_index': True, 'index_cls': False
} }
:attr:`index_opts` (Optional) :attr:`index_options` (Optional)
Set any default index options - see the `full options list <https://docs.mongodb.com/manual/reference/method/db.collection.createIndex/#db.collection.createIndex>`_ Set any default index options - see the `full options list <http://docs.mongodb.org/manual/reference/method/db.collection.ensureIndex/#db.collection.ensureIndex>`_
:attr:`index_background` (Optional) :attr:`index_background` (Optional)
Set the default value for if an index should be indexed in the background Set the default value for if an index should be indexed in the background
@ -559,11 +540,11 @@ There are a few top level defaults for all indexes that can be set::
:attr:`index_cls` (Optional) :attr:`index_cls` (Optional)
A way to turn off a specific index for _cls. A way to turn off a specific index for _cls.
:attr:`auto_create_index` (Optional) :attr:`index_drop_dups` (Optional)
When this is True (default), MongoEngine will ensure that the correct Set the default value for if an index should drop duplicates
indexes exist in MongoDB each time a command is run. This can be disabled
in systems where indexes are managed separately. Disabling this will improve .. note:: Since MongoDB 3.0 drop_dups is not supported anymore. Raises a Warning
performance. and has no effect
Compound Indexes and Indexing sub documents Compound Indexes and Indexing sub documents
@ -628,8 +609,8 @@ point. To create a geospatial index you must prefix the field with the
], ],
} }
Time To Live (TTL) indexes Time To Live indexes
-------------------------- --------------------
A special index type that allows you to automatically expire data from a A special index type that allows you to automatically expire data from a
collection after a given period. See the official collection after a given period. See the official
@ -637,7 +618,7 @@ collection after a given period. See the official
documentation for more information. A common usecase might be session data:: documentation for more information. A common usecase might be session data::
class Session(Document): class Session(Document):
created = DateTimeField(default=datetime.utcnow) created = DateTimeField(default=datetime.now)
meta = { meta = {
'indexes': [ 'indexes': [
{'fields': ['created'], 'expireAfterSeconds': 3600} {'fields': ['created'], 'expireAfterSeconds': 3600}
@ -700,16 +681,11 @@ subsequent calls to :meth:`~mongoengine.queryset.QuerySet.order_by`. ::
Shard keys Shard keys
========== ==========
If your collection is sharded by multiple keys, then you can improve shard If your collection is sharded, then you need to specify the shard key as a tuple,
routing (and thus the performance of your application) by specifying the shard using the :attr:`shard_key` attribute of :attr:`~mongoengine.Document.meta`.
key, using the :attr:`shard_key` attribute of This ensures that the shard key is sent with the query when calling the
:attr:`~mongoengine.Document.meta`. The shard key should be defined as a tuple. :meth:`~mongoengine.document.Document.save` or
:meth:`~mongoengine.document.Document.update` method on an existing
This ensures that the full shard key is sent with the query when calling
methods such as :meth:`~mongoengine.document.Document.save`,
:meth:`~mongoengine.document.Document.update`,
:meth:`~mongoengine.document.Document.modify`, or
:meth:`~mongoengine.document.Document.delete` on an existing
:class:`~mongoengine.Document` instance:: :class:`~mongoengine.Document` instance::
class LogEntry(Document): class LogEntry(Document):
@ -719,8 +695,7 @@ methods such as :meth:`~mongoengine.document.Document.save`,
data = StringField() data = StringField()
meta = { meta = {
'shard_key': ('machine', 'timestamp'), 'shard_key': ('machine', 'timestamp',)
'indexes': ('machine', 'timestamp'),
} }
.. _document-inheritance: .. _document-inheritance:
@ -730,7 +705,7 @@ Document inheritance
To create a specialised type of a :class:`~mongoengine.Document` you have To create a specialised type of a :class:`~mongoengine.Document` you have
defined, you may subclass it and add any extra fields or methods you may need. defined, you may subclass it and add any extra fields or methods you may need.
As this new class is not a direct subclass of As this is new class is not a direct subclass of
:class:`~mongoengine.Document`, it will not be stored in its own collection; it :class:`~mongoengine.Document`, it will not be stored in its own collection; it
will use the same collection as its superclass uses. This allows for more will use the same collection as its superclass uses. This allows for more
convenient and efficient retrieval of related documents -- all you need do is convenient and efficient retrieval of related documents -- all you need do is
@ -750,30 +725,6 @@ document.::
.. note:: From 0.8 onwards :attr:`allow_inheritance` defaults .. note:: From 0.8 onwards :attr:`allow_inheritance` defaults
to False, meaning you must set it to True to use inheritance. to False, meaning you must set it to True to use inheritance.
Setting :attr:`allow_inheritance` to True should also be used in
:class:`~mongoengine.EmbeddedDocument` class in case you need to subclass it
When it comes to querying using :attr:`.objects()`, querying `Page.objects()` will query
both `Page` and `DatedPage` whereas querying `DatedPage` will only query the `DatedPage` documents.
Behind the scenes, MongoEngine deals with inheritance by adding a :attr:`_cls` attribute that contains
the class name in every documents. When a document is loaded, MongoEngine checks
it's :attr:`_cls` attribute and use that class to construct the instance.::
Page(title='a funky title').save()
DatedPage(title='another title', date=datetime.utcnow()).save()
print(Page.objects().count()) # 2
print(DatedPage.objects().count()) # 1
# print documents in their native form
# we remove 'id' to avoid polluting the output with unnecessary detail
qs = Page.objects.exclude('id').as_pymongo()
print(list(qs))
# [
# {'_cls': u 'Page', 'title': 'a funky title'},
# {'_cls': u 'Page.DatedPage', 'title': u 'another title', 'date': datetime.datetime(2019, 12, 13, 20, 16, 59, 993000)}
# ]
Working with existing data Working with existing data
-------------------------- --------------------------
As MongoEngine no longer defaults to needing :attr:`_cls`, you can quickly and As MongoEngine no longer defaults to needing :attr:`_cls`, you can quickly and

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@ -41,6 +41,34 @@ already exist, then any changes will be updated atomically. For example::
.. seealso:: .. seealso::
:ref:`guide-atomic-updates` :ref:`guide-atomic-updates`
Pre save data validation and cleaning
-------------------------------------
MongoEngine allows you to create custom cleaning rules for your documents when
calling :meth:`~mongoengine.Document.save`. By providing a custom
:meth:`~mongoengine.Document.clean` method you can do any pre validation / data
cleaning.
This might be useful if you want to ensure a default value based on other
document values for example::
class Essay(Document):
status = StringField(choices=('Published', 'Draft'), required=True)
pub_date = DateTimeField()
def clean(self):
"""Ensures that only published essays have a `pub_date` and
automatically sets the pub_date if published and not set"""
if self.status == 'Draft' and self.pub_date is not None:
msg = 'Draft entries should not have a publication date.'
raise ValidationError(msg)
# Set the pub_date for published items if not set.
if self.status == 'Published' and self.pub_date is None:
self.pub_date = datetime.now()
.. note::
Cleaning is only called if validation is turned on and when calling
:meth:`~mongoengine.Document.save`.
Cascading Saves Cascading Saves
--------------- ---------------
If your document contains :class:`~mongoengine.fields.ReferenceField` or If your document contains :class:`~mongoengine.fields.ReferenceField` or

View File

@ -2,15 +2,16 @@
GridFS GridFS
====== ======
.. versionadded:: 0.4
Writing Writing
------- -------
GridFS support comes in the form of the :class:`~mongoengine.fields.FileField` field GridFS support comes in the form of the :class:`~mongoengine.fields.FileField` field
object. This field acts as a file-like object and provides a couple of object. This field acts as a file-like object and provides a couple of
different ways of inserting and retrieving data. Arbitrary metadata such as different ways of inserting and retrieving data. Arbitrary metadata such as
content type can also be stored alongside the files. The object returned when accessing a content type can also be stored alongside the files. In the following example,
FileField is a proxy to `Pymongo's GridFS <https://api.mongodb.com/python/current/examples/gridfs.html#gridfs-example>`_ a document is created to store details about animals, including a photo::
In the following example, a document is created to store details about animals, including a photo::
class Animal(Document): class Animal(Document):
genus = StringField() genus = StringField()
@ -19,8 +20,8 @@ In the following example, a document is created to store details about animals,
marmot = Animal(genus='Marmota', family='Sciuridae') marmot = Animal(genus='Marmota', family='Sciuridae')
with open('marmot.jpg', 'rb') as fd: marmot_photo = open('marmot.jpg', 'rb')
marmot.photo.put(fd, content_type = 'image/jpeg') marmot.photo.put(marmot_photo, content_type = 'image/jpeg')
marmot.save() marmot.save()
Retrieval Retrieval
@ -33,20 +34,6 @@ field. The file can also be retrieved just as easily::
photo = marmot.photo.read() photo = marmot.photo.read()
content_type = marmot.photo.content_type content_type = marmot.photo.content_type
.. note:: If you need to read() the content of a file multiple times, you'll need to "rewind"
the file-like object using `seek`::
marmot = Animal.objects(genus='Marmota').first()
content1 = marmot.photo.read()
assert content1 != ""
content2 = marmot.photo.read() # will be empty
assert content2 == ""
marmot.photo.seek(0) # rewind the file by setting the current position of the cursor in the file to 0
content3 = marmot.photo.read()
assert content3 == content1
Streaming Streaming
--------- ---------
@ -66,8 +53,7 @@ Deletion
Deleting stored files is achieved with the :func:`delete` method:: Deleting stored files is achieved with the :func:`delete` method::
marmot.photo.delete() # Deletes the GridFS document marmot.photo.delete()
marmot.save() # Saves the GridFS reference (being None) contained in the marmot instance
.. warning:: .. warning::
@ -85,5 +71,4 @@ Files can be replaced with the :func:`replace` method. This works just like
the :func:`put` method so even metadata can (and should) be replaced:: the :func:`put` method so even metadata can (and should) be replaced::
another_marmot = open('another_marmot.png', 'rb') another_marmot = open('another_marmot.png', 'rb')
marmot.photo.replace(another_marmot, content_type='image/png') # Replaces the GridFS document marmot.photo.replace(another_marmot, content_type='image/png')
marmot.save() # Replaces the GridFS reference contained in marmot instance

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@ -10,10 +10,7 @@ User Guide
defining-documents defining-documents
document-instances document-instances
querying querying
validation
gridfs gridfs
signals signals
text-indexes text-indexes
migration
logging-monitoring
mongomock mongomock

View File

@ -12,7 +12,7 @@ MongoEngine is available on PyPI, so you can use :program:`pip`:
.. code-block:: console .. code-block:: console
$ python -m pip install mongoengine $ pip install mongoengine
Alternatively, if you don't have setuptools installed, `download it from PyPi Alternatively, if you don't have setuptools installed, `download it from PyPi
<http://pypi.python.org/pypi/mongoengine/>`_ and run <http://pypi.python.org/pypi/mongoengine/>`_ and run

View File

@ -1,80 +0,0 @@
==================
Logging/Monitoring
==================
It is possible to use `pymongo.monitoring <https://api.mongodb.com/python/current/api/pymongo/monitoring.html>`_ to monitor
the driver events (e.g: queries, connections, etc). This can be handy if you want to monitor the queries issued by
MongoEngine to the driver.
To use `pymongo.monitoring` with MongoEngine, you need to make sure that you are registering the listeners
**before** establishing the database connection (i.e calling `connect`):
The following snippet provides a basic logging of all command events:
.. code-block:: python
import logging
from pymongo import monitoring
from mongoengine import *
log = logging.getLogger()
log.setLevel(logging.DEBUG)
logging.basicConfig(level=logging.DEBUG)
class CommandLogger(monitoring.CommandListener):
def started(self, event):
log.debug("Command {0.command_name} with request id "
"{0.request_id} started on server "
"{0.connection_id}".format(event))
def succeeded(self, event):
log.debug("Command {0.command_name} with request id "
"{0.request_id} on server {0.connection_id} "
"succeeded in {0.duration_micros} "
"microseconds".format(event))
def failed(self, event):
log.debug("Command {0.command_name} with request id "
"{0.request_id} on server {0.connection_id} "
"failed in {0.duration_micros} "
"microseconds".format(event))
monitoring.register(CommandLogger())
class Jedi(Document):
name = StringField()
connect()
log.info('GO!')
log.info('Saving an item through MongoEngine...')
Jedi(name='Obi-Wan Kenobii').save()
log.info('Querying through MongoEngine...')
obiwan = Jedi.objects.first()
log.info('Updating through MongoEngine...')
obiwan.name = 'Obi-Wan Kenobi'
obiwan.save()
Executing this prints the following output::
INFO:root:GO!
INFO:root:Saving an item through MongoEngine...
DEBUG:root:Command insert with request id 1681692777 started on server ('localhost', 27017)
DEBUG:root:Command insert with request id 1681692777 on server ('localhost', 27017) succeeded in 562 microseconds
INFO:root:Querying through MongoEngine...
DEBUG:root:Command find with request id 1714636915 started on server ('localhost', 27017)
DEBUG:root:Command find with request id 1714636915 on server ('localhost', 27017) succeeded in 341 microseconds
INFO:root:Updating through MongoEngine...
DEBUG:root:Command update with request id 1957747793 started on server ('localhost', 27017)
DEBUG:root:Command update with request id 1957747793 on server ('localhost', 27017) succeeded in 455 microseconds
More details can of course be obtained by checking the `event` argument from the `CommandListener`.

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@ -1,308 +0,0 @@
===================
Documents migration
===================
The structure of your documents and their associated mongoengine schemas are likely
to change over the lifetime of an application. This section provides guidance and
recommendations on how to deal with migrations.
Due to the very flexible nature of mongodb, migrations of models aren't trivial and
for people that know about `alembic` for `sqlalchemy`, there is unfortunately no equivalent
library that will manage the migration in an automatic fashion for mongoengine.
Example 1: Addition of a field
==============================
Let's start by taking a simple example of a model change and review the different option you
have to deal with the migration.
Let's assume we start with the following schema and save an instance:
.. code-block:: python
class User(Document):
name = StringField()
User(name="John Doe").save()
# print the objects as they exist in mongodb
print(User.objects().as_pymongo()) # [{u'_id': ObjectId('5d06b9c3d7c1f18db3e7c874'), u'name': u'John Doe'}]
On the next version of your application, let's now assume that a new field `enabled` gets added to the
existing ``User`` model with a `default=True`. Thus you simply update the ``User`` class to the following:
.. code-block:: python
class User(Document):
name = StringField(required=True)
enabled = BooleanField(default=True)
Without applying any migration, we now reload an object from the database into the ``User`` class
and checks its `enabled` attribute:
.. code-block:: python
assert User.objects.count() == 1
user = User.objects().first()
assert user.enabled is True
assert User.objects(enabled=True).count() == 0 # uh?
assert User.objects(enabled=False).count() == 0 # uh?
# this is consistent with what we have in the database
# in fact, 'enabled' does not exist
print(User.objects().as_pymongo().first()) # {u'_id': ObjectId('5d06b9c3d7c1f18db3e7c874'), u'name': u'John'}
assert User.objects(enabled=None).count() == 1
As you can see, even if the document wasn't updated, mongoengine applies the default value seamlessly when it
loads the pymongo dict into a ``User`` instance. At first sight it looks like you don't need to migrate the
existing documents when adding new fields but this actually leads to inconsistencies when it comes to querying.
In fact, when querying, mongoengine isn't trying to account for the default value of the new field and so
if you don't actually migrate the existing documents, you are taking a risk that querying/updating
will be missing relevant record.
When adding fields/modifying default values, you can use any of the following to do the migration
as a standalone script:
.. code-block:: python
# Use mongoengine to set a default value for a given field
User.objects().update(enabled=True)
# or use pymongo
user_coll = User._get_collection()
user_coll.update_many({}, {'$set': {'enabled': True}})
Example 2: Inheritance change
=============================
Let's consider the following example:
.. code-block:: python
class Human(Document):
name = StringField()
meta = {"allow_inheritance": True}
class Jedi(Human):
dark_side = BooleanField()
light_saber_color = StringField()
Jedi(name="Darth Vader", dark_side=True, light_saber_color="red").save()
Jedi(name="Obi Wan Kenobi", dark_side=False, light_saber_color="blue").save()
assert Human.objects.count() == 2
assert Jedi.objects.count() == 2
# Let's check how these documents got stored in mongodb
print(Jedi.objects.as_pymongo())
# [
# {'_id': ObjectId('5fac4aaaf61d7fb06046e0f9'), '_cls': 'Human.Jedi', 'name': 'Darth Vader', 'dark_side': True, 'light_saber_color': 'red'},
# {'_id': ObjectId('5fac4ac4f61d7fb06046e0fa'), '_cls': 'Human.Jedi', 'name': 'Obi Wan Kenobi', 'dark_side': False, 'light_saber_color': 'blue'}
# ]
As you can observe, when you use inheritance, MongoEngine stores a field named '_cls' behind the scene to keep
track of the Document class.
Let's now take the scenario that you want to refactor the inheritance schema and:
- Have the Jedi's with dark_side=True/False become GoodJedi's/DarkSith
- get rid of the 'dark_side' field
move to the following schemas:
.. code-block:: python
# unchanged
class Human(Document):
name = StringField()
meta = {"allow_inheritance": True}
# attribute 'dark_side' removed
class GoodJedi(Human):
light_saber_color = StringField()
# new class
class BadSith(Human):
light_saber_color = StringField()
MongoEngine doesn't know about the change or how to map them with the existing data
so if you don't apply any migration, you will observe a strange behavior, as if the collection was suddenly
empty.
.. code-block:: python
# As a reminder, the documents that we inserted
# have the _cls field = 'Human.Jedi'
# Following has no match
# because the query that is used behind the scene is
# filtering on {'_cls': 'Human.GoodJedi'}
assert GoodJedi.objects().count() == 0
# Following has also no match
# because it is filtering on {'_cls': {'$in': ('Human', 'Human.GoodJedi', 'Human.BadSith')}}
# which has no match
assert Human.objects.count() == 0
assert Human.objects.first() is None
# If we bypass MongoEngine and make use of underlying driver (PyMongo)
# we can see that the documents are there
humans_coll = Human._get_collection()
assert humans_coll.count_documents({}) == 2
# print first document
print(humans_coll.find_one())
# {'_id': ObjectId('5fac4aaaf61d7fb06046e0f9'), '_cls': 'Human.Jedi', 'name': 'Darth Vader', 'dark_side': True, 'light_saber_color': 'red'}
As you can see, first obvious problem is that we need to modify '_cls' values based on existing values of
'dark_side' documents.
.. code-block:: python
humans_coll = Human._get_collection()
old_class = 'Human.Jedi'
good_jedi_class = 'Human.GoodJedi'
bad_sith_class = 'Human.BadSith'
humans_coll.update_many({'_cls': old_class, 'dark_side': False}, {'$set': {'_cls': good_jedi_class}})
humans_coll.update_many({'_cls': old_class, 'dark_side': True}, {'$set': {'_cls': bad_sith_class}})
Let's now check if querying improved in MongoEngine:
.. code-block:: python
assert GoodJedi.objects().count() == 1 # Hoorah!
assert BadSith.objects().count() == 1 # Hoorah!
assert Human.objects.count() == 2 # Hoorah!
# let's now check that documents load correctly
jedi = GoodJedi.objects().first()
# raises FieldDoesNotExist: The fields "{'dark_side'}" do not exist on the document "Human.GoodJedi"
In fact we only took care of renaming the _cls values but we havn't removed the 'dark_side' fields
which does not exist anymore on the GoodJedi's and BadSith's models.
Let's remove the field from the collections:
.. code-block:: python
humans_coll = Human._get_collection()
humans_coll.update_many({}, {'$unset': {'dark_side': 1}})
.. note:: We did this migration in 2 different steps for the sake of example but it could have been combined
with the migration of the _cls fields: ::
humans_coll.update_many(
{'_cls': old_class, 'dark_side': False},
{
'$set': {'_cls': good_jedi_class},
'$unset': {'dark_side': 1}
}
)
And verify that the documents now load correctly:
.. code-block:: python
jedi = GoodJedi.objects().first()
assert jedi.name == "Obi Wan Kenobi"
sith = BadSith.objects().first()
assert sith.name == "Darth Vader"
An other way of dealing with this migration is to iterate over
the documents and update/replace them one by one. This is way slower but
it is often useful for complex migrations of Document models.
.. code-block:: python
for doc in humans_coll.find():
if doc['_cls'] == 'Human.Jedi':
doc['_cls'] = 'Human.BadSith' if doc['dark_side'] else 'Human.GoodJedi'
doc.pop('dark_side')
humans_coll.replace_one({'_id': doc['_id']}, doc)
.. warning:: Be aware of this `flaw <https://groups.google.com/g/mongodb-user/c/AFC1ia7MHzk>`_ if you modify documents while iterating
Example 4: Index removal
========================
If you remove an index from your Document class, or remove an indexed Field from your Document class,
you'll need to manually drop the corresponding index. MongoEngine will not do that for you.
The way to deal with this case is to identify the name of the index to drop with `index_information()`, and then drop
it with `drop_index()`
Let's for instance assume that you start with the following Document class
.. code-block:: python
class User(Document):
name = StringField(index=True)
meta = {"indexes": ["name"]}
User(name="John Doe").save()
As soon as you start interacting with the Document collection (when `.save()` is called in this case),
it would create the following indexes:
.. code-block:: python
print(User._get_collection().index_information())
# {
# '_id_': {'key': [('_id', 1)], 'v': 2},
# 'name_1': {'background': False, 'key': [('name', 1)], 'v': 2},
# }
Thus: '_id' which is the default index and 'name_1' which is our custom index.
If you would remove the 'name' field or its index, you would have to call:
.. code-block:: python
User._get_collection().drop_index('name_1')
.. note:: When adding new fields or new indexes, MongoEngine will take care of creating them
(unless `auto_create_index` is disabled) ::
Recommendations
===============
- Write migration scripts whenever you do changes to the model schemas
- Using :class:`~mongoengine.DynamicDocument` or ``meta = {"strict": False}`` may help to avoid some migrations or to have the 2 versions of your application to co-exist.
- Write post-processing checks to verify that migrations script worked. See below
Post-processing checks
======================
The following recipe can be used to sanity check a Document collection after you applied migration.
It does not make any assumption on what was migrated, it will fetch 1000 objects randomly and
run some quick checks on the documents to make sure the document looks OK. As it is, it will fail
on the first occurrence of an error but this is something that can be adapted based on your needs.
.. code-block:: python
def get_random_oids(collection, sample_size):
pipeline = [{"$project": {'_id': 1}}, {"$sample": {"size": sample_size}}]
return [s['_id'] for s in collection.aggregate(pipeline)]
def get_random_documents(DocCls, sample_size):
doc_collection = DocCls._get_collection()
random_oids = get_random_oids(doc_collection, sample_size)
return DocCls.objects(id__in=random_oids)
def check_documents(DocCls, sample_size):
for doc in get_random_documents(DocCls, sample_size):
# general validation (types and values)
doc.validate()
# load all subfields,
# this may trigger additional queries if you have ReferenceFields
# so it may be slow
for field in doc._fields:
try:
getattr(doc, field)
except Exception:
LOG.warning(f"Could not load field {field} in Document {doc.id}")
raise
check_documents(Human, sample_size=1000)

View File

@ -2,10 +2,10 @@
Use mongomock for testing Use mongomock for testing
============================== ==============================
`mongomock <https://github.com/vmalloc/mongomock/>`_ is a package to do just `mongomock <https://github.com/vmalloc/mongomock/>`_ is a package to do just
what the name implies, mocking a mongo database. what the name implies, mocking a mongo database.
To use with mongoengine, simply specify mongomock when connecting with To use with mongoengine, simply specify mongomock when connecting with
mongoengine: mongoengine:
.. code-block:: python .. code-block:: python
@ -19,30 +19,3 @@ or with an alias:
connect('mongoenginetest', host='mongomock://localhost', alias='testdb') connect('mongoenginetest', host='mongomock://localhost', alias='testdb')
conn = get_connection('testdb') conn = get_connection('testdb')
Example of test file:
---------------------
.. code-block:: python
import unittest
from mongoengine import connect, disconnect
class Person(Document):
name = StringField()
class TestPerson(unittest.TestCase):
@classmethod
def setUpClass(cls):
connect('mongoenginetest', host='mongomock://localhost')
@classmethod
def tearDownClass(cls):
disconnect()
def test_thing(self):
pers = Person(name='John')
pers.save()
fresh_pers = Person.objects().first()
assert fresh_pers.name == 'John'

View File

@ -64,7 +64,7 @@ Available operators are as follows:
* ``gt`` -- greater than * ``gt`` -- greater than
* ``gte`` -- greater than or equal to * ``gte`` -- greater than or equal to
* ``not`` -- negate a standard check, may be used before other operators (e.g. * ``not`` -- negate a standard check, may be used before other operators (e.g.
``Q(age__not__mod=(5, 0))``) ``Q(age__not__mod=5)``)
* ``in`` -- value is in list (a list of values should be provided) * ``in`` -- value is in list (a list of values should be provided)
* ``nin`` -- value is not in list (a list of values should be provided) * ``nin`` -- value is not in list (a list of values should be provided)
* ``mod`` -- ``value % x == y``, where ``x`` and ``y`` are two provided values * ``mod`` -- ``value % x == y``, where ``x`` and ``y`` are two provided values
@ -86,10 +86,6 @@ expressions:
* ``istartswith`` -- string field starts with value (case insensitive) * ``istartswith`` -- string field starts with value (case insensitive)
* ``endswith`` -- string field ends with value * ``endswith`` -- string field ends with value
* ``iendswith`` -- string field ends with value (case insensitive) * ``iendswith`` -- string field ends with value (case insensitive)
* ``wholeword`` -- string field contains whole word
* ``iwholeword`` -- string field contains whole word (case insensitive)
* ``regex`` -- string field match by regex
* ``iregex`` -- string field match by regex (case insensitive)
* ``match`` -- performs an $elemMatch so you can match an entire document within an array * ``match`` -- performs an $elemMatch so you can match an entire document within an array
@ -226,24 +222,12 @@ keyword argument::
.. versionadded:: 0.4 .. versionadded:: 0.4
Sorting/Ordering results
========================
It is possible to order the results by 1 or more keys using :meth:`~mongoengine.queryset.QuerySet.order_by`.
The order may be specified by prepending each of the keys by "+" or "-". Ascending order is assumed if there's no prefix.::
# Order by ascending date
blogs = BlogPost.objects().order_by('date') # equivalent to .order_by('+date')
# Order by ascending date first, then descending title
blogs = BlogPost.objects().order_by('+date', '-title')
Limiting and skipping results Limiting and skipping results
============================= =============================
Just as with traditional ORMs, you may limit the number of results returned or Just as with traditional ORMs, you may limit the number of results returned or
skip a number or results in you query. skip a number or results in you query.
:meth:`~mongoengine.queryset.QuerySet.limit` and :meth:`~mongoengine.queryset.QuerySet.limit` and
:meth:`~mongoengine.queryset.QuerySet.skip` methods are available on :meth:`~mongoengine.queryset.QuerySet.skip` and methods are available on
:class:`~mongoengine.queryset.QuerySet` objects, but the `array-slicing` syntax :class:`~mongoengine.queryset.QuerySet` objects, but the `array-slicing` syntax
is preferred for achieving this:: is preferred for achieving this::
@ -365,9 +349,9 @@ Just as with limiting and skipping results, there is a method on a
You could technically use ``len(User.objects)`` to get the same result, but it You could technically use ``len(User.objects)`` to get the same result, but it
would be significantly slower than :meth:`~mongoengine.queryset.QuerySet.count`. would be significantly slower than :meth:`~mongoengine.queryset.QuerySet.count`.
When you execute a server-side count query, you let MongoDB do the heavy When you execute a server-side count query, you let MongoDB do the heavy
lifting and you receive a single integer over the wire. Meanwhile, ``len()`` lifting and you receive a single integer over the wire. Meanwhile, len()
retrieves all the results, places them in a local cache, and finally counts retrieves all the results, places them in a local cache, and finally counts
them. If we compare the performance of the two operations, ``len()`` is much slower them. If we compare the performance of the two operations, len() is much slower
than :meth:`~mongoengine.queryset.QuerySet.count`. than :meth:`~mongoengine.queryset.QuerySet.count`.
Further aggregation Further aggregation
@ -402,25 +386,6 @@ would be generating "tag-clouds"::
top_tags = sorted(tag_freqs.items(), key=itemgetter(1), reverse=True)[:10] top_tags = sorted(tag_freqs.items(), key=itemgetter(1), reverse=True)[:10]
MongoDB aggregation API
-----------------------
If you need to run aggregation pipelines, MongoEngine provides an entry point to `Pymongo's aggregation framework <https://api.mongodb.com/python/current/examples/aggregation.html#aggregation-framework>`_
through :meth:`~mongoengine.queryset.QuerySet.aggregate`. Check out Pymongo's documentation for the syntax and pipeline.
An example of its use would be::
class Person(Document):
name = StringField()
Person(name='John').save()
Person(name='Bob').save()
pipeline = [
{"$sort" : {"name" : -1}},
{"$project": {"_id": 0, "name": {"$toUpper": "$name"}}}
]
data = Person.objects().aggregate(pipeline)
assert data == [{'name': 'BOB'}, {'name': 'JOHN'}]
Query efficiency and performance Query efficiency and performance
================================ ================================
@ -491,14 +456,14 @@ data. To turn off dereferencing of the results of a query use
:func:`~mongoengine.queryset.QuerySet.no_dereference` on the queryset like so:: :func:`~mongoengine.queryset.QuerySet.no_dereference` on the queryset like so::
post = Post.objects.no_dereference().first() post = Post.objects.no_dereference().first()
assert(isinstance(post.author, DBRef)) assert(isinstance(post.author, ObjectId))
You can also turn off all dereferencing for a fixed period by using the You can also turn off all dereferencing for a fixed period by using the
:class:`~mongoengine.context_managers.no_dereference` context manager:: :class:`~mongoengine.context_managers.no_dereference` context manager::
with no_dereference(Post) as Post: with no_dereference(Post) as Post:
post = Post.objects.first() post = Post.objects.first()
assert(isinstance(post.author, DBRef)) assert(isinstance(post.author, ObjectId))
# Outside the context manager dereferencing occurs. # Outside the context manager dereferencing occurs.
assert(isinstance(post.author, User)) assert(isinstance(post.author, User))
@ -547,10 +512,7 @@ Documents may be updated atomically by using the
There are several different "modifiers" that you may use with these methods: There are several different "modifiers" that you may use with these methods:
* ``set`` -- set a particular value * ``set`` -- set a particular value
* ``set_on_insert`` -- set only if this is new document `need to add upsert=True`_
* ``unset`` -- delete a particular value (since MongoDB v1.3) * ``unset`` -- delete a particular value (since MongoDB v1.3)
* ``max`` -- update only if value is bigger
* ``min`` -- update only if value is smaller
* ``inc`` -- increment a value by a given amount * ``inc`` -- increment a value by a given amount
* ``dec`` -- decrement a value by a given amount * ``dec`` -- decrement a value by a given amount
* ``push`` -- append a value to a list * ``push`` -- append a value to a list
@ -559,7 +521,6 @@ There are several different "modifiers" that you may use with these methods:
* ``pull`` -- remove a value from a list * ``pull`` -- remove a value from a list
* ``pull_all`` -- remove several values from a list * ``pull_all`` -- remove several values from a list
* ``add_to_set`` -- add value to a list only if its not in the list already * ``add_to_set`` -- add value to a list only if its not in the list already
* ``rename`` -- rename the key name
.. _depending on the value: http://docs.mongodb.org/manual/reference/operator/update/pop/ .. _depending on the value: http://docs.mongodb.org/manual/reference/operator/update/pop/
@ -604,20 +565,10 @@ cannot use the `$` syntax in keyword arguments it has been mapped to `S`::
>>> post.tags >>> post.tags
['database', 'mongodb'] ['database', 'mongodb']
From MongoDB version 2.6, push operator supports $position value which allows
to push values with index::
>>> post = BlogPost(title="Test", tags=["mongo"])
>>> post.save()
>>> post.update(push__tags__0=["database", "code"])
>>> post.reload()
>>> post.tags
['database', 'code', 'mongo']
.. note:: .. note::
Currently only top level lists are handled, future versions of mongodb / Currently only top level lists are handled, future versions of mongodb /
pymongo plan to support nested positional operators. See `The $ positional pymongo plan to support nested positional operators. See `The $ positional
operator <https://docs.mongodb.com/manual/tutorial/update-documents/#Updating-The%24positionaloperator>`_. operator <http://www.mongodb.org/display/DOCS/Updating#Updating-The%24positionaloperator>`_.
Server-side javascript execution Server-side javascript execution
================================ ================================

View File

@ -43,10 +43,10 @@ Available signals include:
has taken place but before saving. has taken place but before saving.
`post_save` `post_save`
Called within :meth:`~mongoengine.Document.save` after most actions Called within :meth:`~mongoengine.Document.save` after all actions
(validation, insert/update, and cascades, but not clearing dirty flags) have (validation, insert/update, cascades, clearing dirty flags) have completed
completed successfully. Passed the additional boolean keyword argument successfully. Passed the additional boolean keyword argument `created` to
`created` to indicate if the save was an insert or an update. indicate if the save was an insert or an update.
`pre_delete` `pre_delete`
Called within :meth:`~mongoengine.Document.delete` prior to Called within :meth:`~mongoengine.Document.delete` prior to
@ -113,10 +113,6 @@ handlers within your subclass::
signals.pre_save.connect(Author.pre_save, sender=Author) signals.pre_save.connect(Author.pre_save, sender=Author)
signals.post_save.connect(Author.post_save, sender=Author) signals.post_save.connect(Author.post_save, sender=Author)
.. warning::
Note that EmbeddedDocument only supports pre/post_init signals. pre/post_save, etc should be attached to Document's class only. Attaching pre_save to an EmbeddedDocument is ignored silently.
Finally, you can also use this small decorator to quickly create a number of Finally, you can also use this small decorator to quickly create a number of
signals and attach them to your :class:`~mongoengine.Document` or signals and attach them to your :class:`~mongoengine.Document` or
:class:`~mongoengine.EmbeddedDocument` subclasses as class decorators:: :class:`~mongoengine.EmbeddedDocument` subclasses as class decorators::

View File

@ -8,7 +8,7 @@ After MongoDB 2.4 version, supports search documents by text indexes.
Defining a Document with text index Defining a Document with text index
=================================== ===================================
Use the *$* prefix to set a text index, Look the declaration:: Use the *$* prefix to set a text index, Look the declaration::
class News(Document): class News(Document):
title = StringField() title = StringField()
content = StringField() content = StringField()
@ -35,10 +35,10 @@ Saving a document::
content="Various improvements").save() content="Various improvements").save()
Next, start a text search using :attr:`QuerySet.search_text` method:: Next, start a text search using :attr:`QuerySet.search_text` method::
document = News.objects.search_text('testing').first() document = News.objects.search_text('testing').first()
document.title # may be: "Using mongodb text search" document.title # may be: "Using mongodb text search"
document = News.objects.search_text('released').first() document = News.objects.search_text('released').first()
document.title # may be: "MongoEngine 0.9 released" document.title # may be: "MongoEngine 0.9 released"
@ -48,4 +48,4 @@ Ordering by text score
:: ::
objects = News.objects.search_text('mongo').order_by('$text_score') objects = News.objects.search('mongo').order_by('$text_score')

View File

@ -1,122 +0,0 @@
====================
Document Validation
====================
By design, MongoEngine strictly validates the documents right before they are inserted in MongoDB
and makes sure they are consistent with the fields defined in your models.
MongoEngine makes the assumption that the documents that exists in the DB are compliant with the schema.
This means that Mongoengine will not validate a document when an object is loaded from the DB into an instance
of your model but this operation may fail under some circumstances (e.g. if there is a field in
the document fetched from the database that is not defined in your model).
Built-in validation
===================
Mongoengine provides different fields that encapsulate the corresponding validation
out of the box. Validation runs when calling `.validate()` or `.save()`
.. code-block:: python
from mongoengine import Document, EmailField
class User(Document):
email = EmailField()
age = IntField(min_value=0, max_value=99)
user = User(email='invalid@', age=24)
user.validate() # raises ValidationError (Invalid email address: ['email'])
user.save() # raises ValidationError (Invalid email address: ['email'])
user2 = User(email='john.doe@garbage.com', age=1000)
user2.save() # raises ValidationError (Integer value is too large: ['age'])
Custom validation
=================
The following feature can be used to customize the validation:
* Field `validation` parameter
.. code-block:: python
def not_john_doe(name):
if name == 'John Doe':
raise ValidationError("John Doe is not a valid name")
class Person(Document):
full_name = StringField(validation=not_john_doe)
Person(full_name='Billy Doe').save()
Person(full_name='John Doe').save() # raises ValidationError (John Doe is not a valid name)
* Document `clean` method
This method is called as part of :meth:`~mongoengine.document.Document.save` and should be used to provide
custom model validation and/or to modify some of the field values prior to validation.
For instance, you could use it to automatically provide a value for a field, or to do validation
that requires access to more than a single field.
.. code-block:: python
class Essay(Document):
status = StringField(choices=('Published', 'Draft'), required=True)
pub_date = DateTimeField()
def clean(self):
# Validate that only published essays have a `pub_date`
if self.status == 'Draft' and self.pub_date is not None:
raise ValidationError('Draft entries should not have a publication date.')
# Set the pub_date for published items if not set.
if self.status == 'Published' and self.pub_date is None:
self.pub_date = datetime.now()
.. note::
Cleaning is only called if validation is turned on and when calling
:meth:`~mongoengine.Document.save`.
* Adding custom Field classes
We recommend as much as possible to use fields provided by MongoEngine. However, it is also possible
to subclass a Field and encapsulate some validation by overriding the `validate` method
.. code-block:: python
class AgeField(IntField):
def validate(self, value):
super(AgeField, self).validate(value) # let IntField.validate run first
if value == 60:
self.error('60 is not allowed')
class Person(Document):
age = AgeField(min_value=0, max_value=99)
Person(age=20).save() # passes
Person(age=1000).save() # raises ValidationError (Integer value is too large: ['age'])
Person(age=60).save() # raises ValidationError (Person:None) (60 is not allowed: ['age'])
.. note::
When overriding `validate`, use `self.error("your-custom-error")` instead of raising ValidationError explicitly,
it will provide a better context with the error message
Skipping validation
====================
Although discouraged as it allows to violate fields constraints, if for some reason you need to disable
the validation and cleaning of a document when you call :meth:`~mongoengine.document.Document.save`, you can use `.save(validate=False)`.
.. code-block:: python
class Person(Document):
age = IntField(max_value=100)
Person(age=1000).save() # raises ValidationError (Integer value is too large)
Person(age=1000).save(validate=False)
person = Person.objects.first()
assert person.age == 1000

View File

@ -7,7 +7,7 @@ MongoDB. To install it, simply run
.. code-block:: console .. code-block:: console
$ python -m pip install -U mongoengine $ pip install -U mongoengine
:doc:`tutorial` :doc:`tutorial`
A quick tutorial building a tumblelog to get you up and running with A quick tutorial building a tumblelog to get you up and running with
@ -23,18 +23,9 @@ MongoDB. To install it, simply run
:doc:`upgrade` :doc:`upgrade`
How to upgrade MongoEngine. How to upgrade MongoEngine.
:doc:`faq`
Frequently Asked Questions
:doc:`django` :doc:`django`
Using MongoEngine and Django Using MongoEngine and Django
MongoDB and driver support
--------------------------
MongoEngine is based on the PyMongo driver and tested against multiple versions of MongoDB.
For further details, please refer to the `readme <https://github.com/MongoEngine/mongoengine#mongoengine>`_.
Community Community
--------- ---------
@ -82,7 +73,6 @@ formats for offline reading.
apireference apireference
changelog changelog
upgrade upgrade
faq
django django
Indices and tables Indices and tables
@ -91,3 +81,4 @@ Indices and tables
* :ref:`genindex` * :ref:`genindex`
* :ref:`modindex` * :ref:`modindex`
* :ref:`search` * :ref:`search`

View File

@ -1,3 +0,0 @@
Sphinx==3.3.0
sphinx-rtd-theme==0.5.0
readthedocs-sphinx-ext==2.1.1

View File

@ -18,7 +18,7 @@ location --- running it locally will be easier, but if that is not an option
then it may be run on a remote server. If you haven't installed MongoEngine, then it may be run on a remote server. If you haven't installed MongoEngine,
simply use pip to install it like so:: simply use pip to install it like so::
$ python -m pip install mongoengine $ pip install mongoengine
Before we can start using MongoEngine, we need to tell it how to connect to our Before we can start using MongoEngine, we need to tell it how to connect to our
instance of :program:`mongod`. For this we use the :func:`~mongoengine.connect` instance of :program:`mongod`. For this we use the :func:`~mongoengine.connect`
@ -86,7 +86,7 @@ of them stand out as particularly intuitive solutions.
Posts Posts
^^^^^ ^^^^^
Happily MongoDB *isn't* a relational database, so we're not going to do it that Happily mongoDB *isn't* a relational database, so we're not going to do it that
way. As it turns out, we can use MongoDB's schemaless nature to provide us with way. As it turns out, we can use MongoDB's schemaless nature to provide us with
a much nicer solution. We will store all of the posts in *one collection* and a much nicer solution. We will store all of the posts in *one collection* and
each post type will only store the fields it needs. If we later want to add each post type will only store the fields it needs. If we later want to add
@ -153,7 +153,7 @@ post. This works, but there is no real reason to be storing the comments
separately from their associated posts, other than to work around the separately from their associated posts, other than to work around the
relational model. Using MongoDB we can store the comments as a list of relational model. Using MongoDB we can store the comments as a list of
*embedded documents* directly on a post document. An embedded document should *embedded documents* directly on a post document. An embedded document should
be treated no differently than a regular document; it just doesn't have its own be treated no differently that a regular document; it just doesn't have its own
collection in the database. Using MongoEngine, we can define the structure of collection in the database. Using MongoEngine, we can define the structure of
embedded documents, along with utility methods, in exactly the same way we do embedded documents, along with utility methods, in exactly the same way we do
with regular documents:: with regular documents::
@ -206,10 +206,7 @@ object::
ross.last_name = 'Lawley' ross.last_name = 'Lawley'
ross.save() ross.save()
Assign another user to a variable called ``john``, just like we did above with Now that we've got our user in the database, let's add a couple of posts::
``ross``.
Now that we've got our users in the database, let's add a couple of posts::
post1 = TextPost(title='Fun with MongoEngine', author=john) post1 = TextPost(title='Fun with MongoEngine', author=john)
post1.content = 'Took a look at MongoEngine today, looks pretty cool.' post1.content = 'Took a look at MongoEngine today, looks pretty cool.'

View File

@ -6,23 +6,6 @@ Development
*********** ***********
(Fill this out whenever you introduce breaking changes to MongoEngine) (Fill this out whenever you introduce breaking changes to MongoEngine)
URLField's constructor no longer takes `verify_exists`
0.15.0
******
0.14.0
******
This release includes a few bug fixes and a significant code cleanup. The most
important change is that `QuerySet.as_pymongo` no longer supports a
`coerce_types` mode. If you used it in the past, a) please let us know of your
use case, b) you'll need to override `as_pymongo` to get the desired outcome.
This release also makes the EmbeddedDocument not hashable by default. If you
use embedded documents in sets or dictionaries, you might have to override
`__hash__` and implement a hashing logic specific to your use case. See #1528
for the reason behind this change.
0.13.0 0.13.0
****** ******
This release adds Unicode support to the `EmailField` and changes its This release adds Unicode support to the `EmailField` and changes its
@ -52,7 +35,7 @@ rename its occurrences.
This release includes a major rehaul of MongoEngine's code quality and This release includes a major rehaul of MongoEngine's code quality and
introduces a few breaking changes. It also touches many different parts of introduces a few breaking changes. It also touches many different parts of
the package and although all the changes have been tested and scrutinized, the package and although all the changes have been tested and scrutinized,
you're encouraged to thoroughly test the upgrade. you're encouraged to thorougly test the upgrade.
First breaking change involves renaming `ConnectionError` to `MongoEngineConnectionError`. First breaking change involves renaming `ConnectionError` to `MongoEngineConnectionError`.
If you import or catch this exception, you'll need to rename it in your code. If you import or catch this exception, you'll need to rename it in your code.
@ -85,10 +68,10 @@ by default from now on.
The 0.8.7 package on pypi was corrupted. If upgrading from 0.8.7 to 0.9.0 please follow: :: The 0.8.7 package on pypi was corrupted. If upgrading from 0.8.7 to 0.9.0 please follow: ::
python -m pip uninstall pymongo pip uninstall pymongo
python -m pip uninstall mongoengine pip uninstall mongoengine
python -m pip install pymongo==2.8 pip install pymongo==2.8
python -m pip install mongoengine pip install mongoengine
0.8.7 0.8.7
***** *****
@ -153,7 +136,7 @@ inherited classes like so: ::
# 4. Remove indexes # 4. Remove indexes
info = collection.index_information() info = collection.index_information()
indexes_to_drop = [key for key, value in info.items() indexes_to_drop = [key for key, value in info.iteritems()
if '_types' in dict(value['key'])] if '_types' in dict(value['key'])]
for index in indexes_to_drop: for index in indexes_to_drop:
collection.drop_index(index) collection.drop_index(index)

View File

@ -1,43 +1,36 @@
# Import submodules so that we can expose their __all__ # Import submodules so that we can expose their __all__
from mongoengine import ( from mongoengine import connection
connection, from mongoengine import document
document, from mongoengine import errors
errors, from mongoengine import fields
fields, from mongoengine import queryset
queryset, from mongoengine import signals
signals,
)
# Import everything from each submodule so that it can be accessed via # Import everything from each submodule so that it can be accessed via
# mongoengine, e.g. instead of `from mongoengine.connection import connect`, # mongoengine, e.g. instead of `from mongoengine.connection import connect`,
# users can simply use `from mongoengine import connect`, or even # users can simply use `from mongoengine import connect`, or even
# `from mongoengine import *` and then `connect('testdb')`. # `from mongoengine import *` and then `connect('testdb')`.
from mongoengine.connection import * # noqa: F401 from mongoengine.connection import *
from mongoengine.document import * # noqa: F401 from mongoengine.document import *
from mongoengine.errors import * # noqa: F401 from mongoengine.errors import *
from mongoengine.fields import * # noqa: F401 from mongoengine.fields import *
from mongoengine.queryset import * # noqa: F401 from mongoengine.queryset import *
from mongoengine.signals import * # noqa: F401 from mongoengine.signals import *
__all__ = (
list(document.__all__)
+ list(fields.__all__)
+ list(connection.__all__)
+ list(queryset.__all__)
+ list(signals.__all__)
+ list(errors.__all__)
)
VERSION = (0, 23, 1) __all__ = (list(document.__all__) + list(fields.__all__) +
list(connection.__all__) + list(queryset.__all__) +
list(signals.__all__) + list(errors.__all__))
VERSION = (0, 13, 0)
def get_version(): def get_version():
"""Return the VERSION as a string. """Return the VERSION as a string, e.g. for VERSION == (0, 10, 7),
return '0.10.7'.
For example, if `VERSION == (0, 10, 7)`, return '0.10.7'.
""" """
return ".".join(map(str, VERSION)) return '.'.join(map(str, VERSION))
__version__ = get_version() __version__ = get_version()

View File

@ -12,22 +12,17 @@ from mongoengine.base.metaclasses import *
__all__ = ( __all__ = (
# common # common
"UPDATE_OPERATORS", 'UPDATE_OPERATORS', '_document_registry', 'get_document',
"_document_registry",
"get_document",
# datastructures # datastructures
"BaseDict", 'BaseDict', 'BaseList', 'EmbeddedDocumentList',
"BaseList",
"EmbeddedDocumentList",
"LazyReference",
# document # document
"BaseDocument", 'BaseDocument',
# fields # fields
"BaseField", 'BaseField', 'ComplexBaseField', 'ObjectIdField', 'GeoJsonBaseField',
"ComplexBaseField",
"ObjectIdField",
"GeoJsonBaseField",
# metaclasses # metaclasses
"DocumentMetaclass", 'DocumentMetaclass', 'TopLevelDocumentMetaclass'
"TopLevelDocumentMetaclass",
) )

View File

@ -1,62 +1,31 @@
from mongoengine.errors import NotRegistered from mongoengine.errors import NotRegistered
__all__ = ("UPDATE_OPERATORS", "get_document", "_document_registry") __all__ = ('UPDATE_OPERATORS', 'get_document', '_document_registry')
UPDATE_OPERATORS = { UPDATE_OPERATORS = set(['set', 'unset', 'inc', 'dec', 'pop', 'push',
"set", 'push_all', 'pull', 'pull_all', 'add_to_set',
"unset", 'set_on_insert', 'min', 'max', 'rename'])
"inc",
"dec",
"mul",
"pop",
"push",
"push_all",
"pull",
"pull_all",
"add_to_set",
"set_on_insert",
"min",
"max",
"rename",
}
_document_registry = {} _document_registry = {}
def get_document(name): def get_document(name):
"""Get a registered Document class by name.""" """Get a document class by name."""
doc = _document_registry.get(name, None) doc = _document_registry.get(name, None)
if not doc: if not doc:
# Possible old style name # Possible old style name
single_end = name.split(".")[-1] single_end = name.split('.')[-1]
compound_end = ".%s" % single_end compound_end = '.%s' % single_end
possible_match = [ possible_match = [k for k in _document_registry.keys()
k for k in _document_registry if k.endswith(compound_end) or k == single_end if k.endswith(compound_end) or k == single_end]
]
if len(possible_match) == 1: if len(possible_match) == 1:
doc = _document_registry.get(possible_match.pop(), None) doc = _document_registry.get(possible_match.pop(), None)
if not doc: if not doc:
raise NotRegistered( raise NotRegistered("""
"""
`%s` has not been registered in the document registry. `%s` has not been registered in the document registry.
Importing the document class automatically registers it, has it Importing the document class automatically registers it, has it
been imported? been imported?
""".strip() """.strip() % name)
% name
)
return doc return doc
def _get_documents_by_db(connection_alias, default_connection_alias):
"""Get all registered Documents class attached to a given database"""
def get_doc_alias(doc_cls):
return doc_cls._meta.get("db_alias", default_connection_alias)
return [
doc_cls
for doc_cls in _document_registry.values()
if get_doc_alias(doc_cls) == connection_alias
]

View File

@ -1,41 +1,12 @@
import itertools
import weakref import weakref
from bson import DBRef import six
from mongoengine.common import _import_class from mongoengine.common import _import_class
from mongoengine.errors import DoesNotExist, MultipleObjectsReturned from mongoengine.errors import DoesNotExist, MultipleObjectsReturned
__all__ = ( __all__ = ('BaseDict', 'BaseList', 'EmbeddedDocumentList')
"BaseDict",
"StrictDict",
"BaseList",
"EmbeddedDocumentList",
"LazyReference",
)
def mark_as_changed_wrapper(parent_method):
"""Decorator that ensures _mark_as_changed method gets called."""
def wrapper(self, *args, **kwargs):
# Can't use super() in the decorator.
result = parent_method(self, *args, **kwargs)
self._mark_as_changed()
return result
return wrapper
def mark_key_as_changed_wrapper(parent_method):
"""Decorator that ensures _mark_as_changed method gets called with the key argument"""
def wrapper(self, key, *args, **kwargs):
# Can't use super() in the decorator.
result = parent_method(self, key, *args, **kwargs)
self._mark_as_changed(key)
return result
return wrapper
class BaseDict(dict): class BaseDict(dict):
@ -46,36 +17,46 @@ class BaseDict(dict):
_name = None _name = None
def __init__(self, dict_items, instance, name): def __init__(self, dict_items, instance, name):
BaseDocument = _import_class("BaseDocument") Document = _import_class('Document')
EmbeddedDocument = _import_class('EmbeddedDocument')
if isinstance(instance, BaseDocument): if isinstance(instance, (Document, EmbeddedDocument)):
self._instance = weakref.proxy(instance) self._instance = weakref.proxy(instance)
self._name = name self._name = name
super().__init__(dict_items) super(BaseDict, self).__init__(dict_items)
def get(self, key, default=None): def __getitem__(self, key, *args, **kwargs):
# get does not use __getitem__ by default so we must override it as well value = super(BaseDict, self).__getitem__(key)
try:
return self.__getitem__(key)
except KeyError:
return default
def __getitem__(self, key): EmbeddedDocument = _import_class('EmbeddedDocument')
value = super().__getitem__(key)
EmbeddedDocument = _import_class("EmbeddedDocument")
if isinstance(value, EmbeddedDocument) and value._instance is None: if isinstance(value, EmbeddedDocument) and value._instance is None:
value._instance = self._instance value._instance = self._instance
elif isinstance(value, dict) and not isinstance(value, BaseDict): elif not isinstance(value, BaseDict) and isinstance(value, dict):
value = BaseDict(value, None, f"{self._name}.{key}") value = BaseDict(value, None, '%s.%s' % (self._name, key))
super().__setitem__(key, value) super(BaseDict, self).__setitem__(key, value)
value._instance = self._instance value._instance = self._instance
elif isinstance(value, list) and not isinstance(value, BaseList): elif not isinstance(value, BaseList) and isinstance(value, list):
value = BaseList(value, None, f"{self._name}.{key}") value = BaseList(value, None, '%s.%s' % (self._name, key))
super().__setitem__(key, value) super(BaseDict, self).__setitem__(key, value)
value._instance = self._instance value._instance = self._instance
return value return value
def __setitem__(self, key, value, *args, **kwargs):
self._mark_as_changed(key)
return super(BaseDict, self).__setitem__(key, value)
def __delete__(self, *args, **kwargs):
self._mark_as_changed()
return super(BaseDict, self).__delete__(*args, **kwargs)
def __delitem__(self, key, *args, **kwargs):
self._mark_as_changed(key)
return super(BaseDict, self).__delitem__(key)
def __delattr__(self, key, *args, **kwargs):
self._mark_as_changed(key)
return super(BaseDict, self).__delattr__(key)
def __getstate__(self): def __getstate__(self):
self.instance = None self.instance = None
self._dereferenced = False self._dereferenced = False
@ -85,19 +66,30 @@ class BaseDict(dict):
self = state self = state
return self return self
__setitem__ = mark_key_as_changed_wrapper(dict.__setitem__) def clear(self, *args, **kwargs):
__delattr__ = mark_key_as_changed_wrapper(dict.__delattr__) self._mark_as_changed()
__delitem__ = mark_key_as_changed_wrapper(dict.__delitem__) return super(BaseDict, self).clear()
pop = mark_as_changed_wrapper(dict.pop)
clear = mark_as_changed_wrapper(dict.clear) def pop(self, *args, **kwargs):
update = mark_as_changed_wrapper(dict.update) self._mark_as_changed()
popitem = mark_as_changed_wrapper(dict.popitem) return super(BaseDict, self).pop(*args, **kwargs)
setdefault = mark_as_changed_wrapper(dict.setdefault)
def popitem(self, *args, **kwargs):
self._mark_as_changed()
return super(BaseDict, self).popitem()
def setdefault(self, *args, **kwargs):
self._mark_as_changed()
return super(BaseDict, self).setdefault(*args, **kwargs)
def update(self, *args, **kwargs):
self._mark_as_changed()
return super(BaseDict, self).update(*args, **kwargs)
def _mark_as_changed(self, key=None): def _mark_as_changed(self, key=None):
if hasattr(self._instance, "_mark_as_changed"): if hasattr(self._instance, '_mark_as_changed'):
if key: if key:
self._instance._mark_as_changed(f"{self._name}.{key}") self._instance._mark_as_changed('%s.%s' % (self._name, key))
else: else:
self._instance._mark_as_changed(self._name) self._instance._mark_as_changed(self._name)
@ -110,41 +102,52 @@ class BaseList(list):
_name = None _name = None
def __init__(self, list_items, instance, name): def __init__(self, list_items, instance, name):
BaseDocument = _import_class("BaseDocument") Document = _import_class('Document')
EmbeddedDocument = _import_class('EmbeddedDocument')
if isinstance(instance, BaseDocument): if isinstance(instance, (Document, EmbeddedDocument)):
self._instance = weakref.proxy(instance) self._instance = weakref.proxy(instance)
self._name = name self._name = name
super().__init__(list_items) super(BaseList, self).__init__(list_items)
def __getitem__(self, key): def __getitem__(self, key, *args, **kwargs):
# change index to positive value because MongoDB does not support negative one value = super(BaseList, self).__getitem__(key)
if isinstance(key, int) and key < 0:
key = len(self) + key
value = super().__getitem__(key)
if isinstance(key, slice): EmbeddedDocument = _import_class('EmbeddedDocument')
# When receiving a slice operator, we don't convert the structure and bind
# to parent's instance. This is buggy for now but would require more work to be handled properly
return value
EmbeddedDocument = _import_class("EmbeddedDocument")
if isinstance(value, EmbeddedDocument) and value._instance is None: if isinstance(value, EmbeddedDocument) and value._instance is None:
value._instance = self._instance value._instance = self._instance
elif isinstance(value, dict) and not isinstance(value, BaseDict): elif not isinstance(value, BaseDict) and isinstance(value, dict):
# Replace dict by BaseDict value = BaseDict(value, None, '%s.%s' % (self._name, key))
value = BaseDict(value, None, f"{self._name}.{key}") super(BaseList, self).__setitem__(key, value)
super().__setitem__(key, value)
value._instance = self._instance value._instance = self._instance
elif isinstance(value, list) and not isinstance(value, BaseList): elif not isinstance(value, BaseList) and isinstance(value, list):
# Replace list by BaseList value = BaseList(value, None, '%s.%s' % (self._name, key))
value = BaseList(value, None, f"{self._name}.{key}") super(BaseList, self).__setitem__(key, value)
super().__setitem__(key, value)
value._instance = self._instance value._instance = self._instance
return value return value
def __iter__(self): def __iter__(self):
yield from super().__iter__() for i in xrange(self.__len__()):
yield self[i]
def __setitem__(self, key, value, *args, **kwargs):
if isinstance(key, slice):
self._mark_as_changed()
else:
self._mark_as_changed(key)
return super(BaseList, self).__setitem__(key, value)
def __delitem__(self, key, *args, **kwargs):
self._mark_as_changed()
return super(BaseList, self).__delitem__(key)
def __setslice__(self, *args, **kwargs):
self._mark_as_changed()
return super(BaseList, self).__setslice__(*args, **kwargs)
def __delslice__(self, *args, **kwargs):
self._mark_as_changed()
return super(BaseList, self).__delslice__(*args, **kwargs)
def __getstate__(self): def __getstate__(self):
self.instance = None self.instance = None
@ -155,40 +158,53 @@ class BaseList(list):
self = state self = state
return self return self
def __setitem__(self, key, value): def __iadd__(self, other):
changed_key = key self._mark_as_changed()
if isinstance(key, slice): return super(BaseList, self).__iadd__(other)
# In case of slice, we don't bother to identify the exact elements being updated
# instead, we simply marks the whole list as changed
changed_key = None
result = super().__setitem__(key, value) def __imul__(self, other):
self._mark_as_changed(changed_key) self._mark_as_changed()
return result return super(BaseList, self).__imul__(other)
append = mark_as_changed_wrapper(list.append) def append(self, *args, **kwargs):
extend = mark_as_changed_wrapper(list.extend) self._mark_as_changed()
insert = mark_as_changed_wrapper(list.insert) return super(BaseList, self).append(*args, **kwargs)
pop = mark_as_changed_wrapper(list.pop)
remove = mark_as_changed_wrapper(list.remove) def extend(self, *args, **kwargs):
reverse = mark_as_changed_wrapper(list.reverse) self._mark_as_changed()
sort = mark_as_changed_wrapper(list.sort) return super(BaseList, self).extend(*args, **kwargs)
__delitem__ = mark_as_changed_wrapper(list.__delitem__)
__iadd__ = mark_as_changed_wrapper(list.__iadd__) def insert(self, *args, **kwargs):
__imul__ = mark_as_changed_wrapper(list.__imul__) self._mark_as_changed()
return super(BaseList, self).insert(*args, **kwargs)
def pop(self, *args, **kwargs):
self._mark_as_changed()
return super(BaseList, self).pop(*args, **kwargs)
def remove(self, *args, **kwargs):
self._mark_as_changed()
return super(BaseList, self).remove(*args, **kwargs)
def reverse(self, *args, **kwargs):
self._mark_as_changed()
return super(BaseList, self).reverse()
def sort(self, *args, **kwargs):
self._mark_as_changed()
return super(BaseList, self).sort(*args, **kwargs)
def _mark_as_changed(self, key=None): def _mark_as_changed(self, key=None):
if hasattr(self._instance, "_mark_as_changed"): if hasattr(self._instance, '_mark_as_changed'):
if key is not None: if key:
self._instance._mark_as_changed(f"{self._name}.{key % len(self)}") self._instance._mark_as_changed(
'%s.%s' % (self._name, key % len(self))
)
else: else:
self._instance._mark_as_changed(self._name) self._instance._mark_as_changed(self._name)
class EmbeddedDocumentList(BaseList): class EmbeddedDocumentList(BaseList):
def __init__(self, list_items, instance, name):
super().__init__(list_items, instance, name)
self._instance = instance
@classmethod @classmethod
def __match_all(cls, embedded_doc, kwargs): def __match_all(cls, embedded_doc, kwargs):
@ -197,7 +213,7 @@ class EmbeddedDocumentList(BaseList):
""" """
for key, expected_value in kwargs.items(): for key, expected_value in kwargs.items():
doc_val = getattr(embedded_doc, key) doc_val = getattr(embedded_doc, key)
if doc_val != expected_value and str(doc_val) != expected_value: if doc_val != expected_value and six.text_type(doc_val) != expected_value:
return False return False
return True return True
@ -208,14 +224,15 @@ class EmbeddedDocumentList(BaseList):
return embedded_docs return embedded_docs
return [doc for doc in embedded_docs if cls.__match_all(doc, kwargs)] return [doc for doc in embedded_docs if cls.__match_all(doc, kwargs)]
def __init__(self, list_items, instance, name):
super(EmbeddedDocumentList, self).__init__(list_items, instance, name)
self._instance = instance
def filter(self, **kwargs): def filter(self, **kwargs):
""" """
Filters the list by only including embedded documents with the Filters the list by only including embedded documents with the
given keyword arguments. given keyword arguments.
This method only supports simple comparison (e.g. .filter(name='John Doe'))
and does not support operators like __gte, __lte, __icontains like queryset.filter does
:param kwargs: The keyword arguments corresponding to the fields to :param kwargs: The keyword arguments corresponding to the fields to
filter on. *Multiple arguments are treated as if they are ANDed filter on. *Multiple arguments are treated as if they are ANDed
together.* together.*
@ -270,10 +287,12 @@ class EmbeddedDocumentList(BaseList):
""" """
values = self.__only_matches(self, kwargs) values = self.__only_matches(self, kwargs)
if len(values) == 0: if len(values) == 0:
raise DoesNotExist("%s matching query does not exist." % self._name) raise DoesNotExist(
'%s matching query does not exist.' % self._name
)
elif len(values) > 1: elif len(values) > 1:
raise MultipleObjectsReturned( raise MultipleObjectsReturned(
"%d items returned, instead of 1" % len(values) '%d items returned, instead of 1' % len(values)
) )
return values[0] return values[0]
@ -287,11 +306,11 @@ class EmbeddedDocumentList(BaseList):
def create(self, **values): def create(self, **values):
""" """
Creates a new instance of the EmbeddedDocument and appends it to this EmbeddedDocumentList. Creates a new embedded document and saves it to the database.
.. note:: .. note::
the instance of the EmbeddedDocument is not automatically saved to the database. The embedded document changes are not automatically saved
You still need to call .save() on the parent Document. to the database after calling this method.
:param values: A dictionary of values for the embedded document. :param values: A dictionary of values for the embedded document.
:return: The new embedded document instance. :return: The new embedded document instance.
@ -331,8 +350,7 @@ class EmbeddedDocumentList(BaseList):
def update(self, **update): def update(self, **update):
""" """
Updates the embedded documents with the given replacement values. This Updates the embedded documents with the given update values.
function does not support mongoDB update operators such as ``inc__``.
.. note:: .. note::
The embedded document changes are not automatically saved The embedded document changes are not automatically saved
@ -352,24 +370,24 @@ class EmbeddedDocumentList(BaseList):
return len(values) return len(values)
class StrictDict: class StrictDict(object):
__slots__ = () __slots__ = ()
_special_fields = {"get", "pop", "iteritems", "items", "keys", "create"} _special_fields = set(['get', 'pop', 'iteritems', 'items', 'keys', 'create'])
_classes = {} _classes = {}
def __init__(self, **kwargs): def __init__(self, **kwargs):
for k, v in kwargs.items(): for k, v in kwargs.iteritems():
setattr(self, k, v) setattr(self, k, v)
def __getitem__(self, key): def __getitem__(self, key):
key = "_reserved_" + key if key in self._special_fields else key key = '_reserved_' + key if key in self._special_fields else key
try: try:
return getattr(self, key) return getattr(self, key)
except AttributeError: except AttributeError:
raise KeyError(key) raise KeyError(key)
def __setitem__(self, key, value): def __setitem__(self, key, value):
key = "_reserved_" + key if key in self._special_fields else key key = '_reserved_' + key if key in self._special_fields else key
return setattr(self, key, value) return setattr(self, key, value)
def __contains__(self, key): def __contains__(self, key):
@ -406,68 +424,63 @@ class StrictDict:
return (key for key in self.__slots__ if hasattr(self, key)) return (key for key in self.__slots__ if hasattr(self, key))
def __len__(self): def __len__(self):
return len(list(self.items())) return len(list(self.iteritems()))
def __eq__(self, other): def __eq__(self, other):
return list(self.items()) == list(other.items()) return self.items() == other.items()
def __ne__(self, other): def __ne__(self, other):
return not (self == other) return self.items() != other.items()
@classmethod @classmethod
def create(cls, allowed_keys): def create(cls, allowed_keys):
allowed_keys_tuple = tuple( allowed_keys_tuple = tuple(('_reserved_' + k if k in cls._special_fields else k) for k in allowed_keys)
("_reserved_" + k if k in cls._special_fields else k) for k in allowed_keys
)
allowed_keys = frozenset(allowed_keys_tuple) allowed_keys = frozenset(allowed_keys_tuple)
if allowed_keys not in cls._classes: if allowed_keys not in cls._classes:
class SpecificStrictDict(cls): class SpecificStrictDict(cls):
__slots__ = allowed_keys_tuple __slots__ = allowed_keys_tuple
def __repr__(self): def __repr__(self):
return "{%s}" % ", ".join( return '{%s}' % ', '.join('"{0!s}": {1!r}'.format(k, v) for k, v in self.items())
f'"{k!s}": {v!r}' for k, v in self.items()
)
cls._classes[allowed_keys] = SpecificStrictDict cls._classes[allowed_keys] = SpecificStrictDict
return cls._classes[allowed_keys] return cls._classes[allowed_keys]
class LazyReference(DBRef): class SemiStrictDict(StrictDict):
__slots__ = ("_cached_doc", "passthrough", "document_type") __slots__ = ('_extras', )
_classes = {}
def fetch(self, force=False): def __getattr__(self, attr):
if not self._cached_doc or force:
self._cached_doc = self.document_type.objects.get(pk=self.pk)
if not self._cached_doc:
raise DoesNotExist("Trying to dereference unknown document %s" % (self))
return self._cached_doc
@property
def pk(self):
return self.id
def __init__(self, document_type, pk, cached_doc=None, passthrough=False):
self.document_type = document_type
self._cached_doc = cached_doc
self.passthrough = passthrough
super().__init__(self.document_type._get_collection_name(), pk)
def __getitem__(self, name):
if not self.passthrough:
raise KeyError()
document = self.fetch()
return document[name]
def __getattr__(self, name):
if not object.__getattribute__(self, "passthrough"):
raise AttributeError()
document = self.fetch()
try: try:
return document[name] super(SemiStrictDict, self).__getattr__(attr)
except KeyError: except AttributeError:
raise AttributeError() try:
return self.__getattribute__('_extras')[attr]
except KeyError as e:
raise AttributeError(e)
def __repr__(self): def __setattr__(self, attr, value):
return f"<LazyReference({self.document_type}, {self.pk!r})>" try:
super(SemiStrictDict, self).__setattr__(attr, value)
except AttributeError:
try:
self._extras[attr] = value
except AttributeError:
self._extras = {attr: value}
def __delattr__(self, attr):
try:
super(SemiStrictDict, self).__delattr__(attr)
except AttributeError:
try:
del self._extras[attr]
except KeyError as e:
raise AttributeError(e)
def __iter__(self):
try:
extras_iter = iter(self.__getattribute__('_extras'))
except AttributeError:
extras_iter = ()
return itertools.chain(super(SemiStrictDict, self).__iter__(), extras_iter)

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@ -1,27 +1,29 @@
import operator import operator
import warnings
import weakref import weakref
from bson import DBRef, ObjectId, SON
import pymongo import pymongo
from bson import SON, DBRef, ObjectId import six
from mongoengine.base.common import UPDATE_OPERATORS from mongoengine.base.common import UPDATE_OPERATORS
from mongoengine.base.datastructures import ( from mongoengine.base.datastructures import (BaseDict, BaseList,
BaseDict, EmbeddedDocumentList)
BaseList,
EmbeddedDocumentList,
)
from mongoengine.common import _import_class from mongoengine.common import _import_class
from mongoengine.errors import DeprecatedError, ValidationError from mongoengine.errors import ValidationError
__all__ = ("BaseField", "ComplexBaseField", "ObjectIdField", "GeoJsonBaseField")
class BaseField: __all__ = ('BaseField', 'ComplexBaseField', 'ObjectIdField',
'GeoJsonBaseField')
class BaseField(object):
"""A base class for fields in a MongoDB document. Instances of this class """A base class for fields in a MongoDB document. Instances of this class
may be added to subclasses of `Document` to define a document's schema. may be added to subclasses of `Document` to define a document's schema.
"""
name = None # set in TopLevelDocumentMetaclass .. versionchanged:: 0.5 - added verbose and help text
"""
name = None
_geo_index = False _geo_index = False
_auto_gen = False # Call `generate` to generate a value _auto_gen = False # Call `generate` to generate a value
_auto_dereference = True _auto_dereference = True
@ -32,23 +34,14 @@ class BaseField:
creation_counter = 0 creation_counter = 0
auto_creation_counter = -1 auto_creation_counter = -1
def __init__( def __init__(self, db_field=None, name=None, required=False, default=None,
self, unique=False, unique_with=None, primary_key=False,
db_field=None, validation=None, choices=None, null=False, sparse=False,
required=False, **kwargs):
default=None,
unique=False,
unique_with=None,
primary_key=False,
validation=None,
choices=None,
null=False,
sparse=False,
**kwargs,
):
""" """
:param db_field: The database field to store this field in :param db_field: The database field to store this field in
(defaults to the name of the field) (defaults to the name of the field)
:param name: Deprecated - use db_field
:param required: If the field is required. Whether it has to have a :param required: If the field is required. Whether it has to have a
value or not. Defaults to False. value or not. Defaults to False.
:param default: (optional) The default value for this field if no value :param default: (optional) The default value for this field if no value
@ -59,10 +52,10 @@ class BaseField:
unique with. unique with.
:param primary_key: Mark this field as the primary key. Defaults to False. :param primary_key: Mark this field as the primary key. Defaults to False.
:param validation: (optional) A callable to validate the value of the :param validation: (optional) A callable to validate the value of the
field. The callable takes the value as parameter and should raise field. Generally this is deprecated in favour of the
a ValidationError if validation fails `FIELD.validate` method
:param choices: (optional) The valid choices :param choices: (optional) The valid choices
:param null: (optional) If the field value can be null. If no and there is a default value :param null: (optional) Is the field value can be null. If no and there is a default value
then the default value is set then the default value is set
:param sparse: (optional) `sparse=True` combined with `unique=True` and `required=False` :param sparse: (optional) `sparse=True` combined with `unique=True` and `required=False`
means that uniqueness won't be enforced for `None` values means that uniqueness won't be enforced for `None` values
@ -72,8 +65,11 @@ class BaseField:
existing attributes. Common metadata includes `verbose_name` and existing attributes. Common metadata includes `verbose_name` and
`help_text`. `help_text`.
""" """
self.db_field = db_field if not primary_key else "_id" self.db_field = (db_field or name) if not primary_key else '_id'
if name:
msg = 'Field\'s "name" attribute deprecated in favour of "db_field"'
warnings.warn(msg, DeprecationWarning)
self.required = required or primary_key self.required = required or primary_key
self.default = default self.default = default
self.unique = bool(unique or unique_with) self.unique = bool(unique or unique_with)
@ -85,15 +81,11 @@ class BaseField:
self.sparse = sparse self.sparse = sparse
self._owner_document = None self._owner_document = None
# Make sure db_field is a string (if it's explicitly defined). # Validate the db_field
if self.db_field is not None and not isinstance(self.db_field, str): if isinstance(self.db_field, six.string_types) and (
raise TypeError("db_field should be a string.") '.' in self.db_field or
'\0' in self.db_field or
# Make sure db_field doesn't contain any forbidden characters. self.db_field.startswith('$')
if isinstance(self.db_field, str) and (
"." in self.db_field
or "\0" in self.db_field
or self.db_field.startswith("$")
): ):
raise ValueError( raise ValueError(
'field names cannot contain dots (".") or null characters ' 'field names cannot contain dots (".") or null characters '
@ -103,17 +95,15 @@ class BaseField:
# Detect and report conflicts between metadata and base properties. # Detect and report conflicts between metadata and base properties.
conflicts = set(dir(self)) & set(kwargs) conflicts = set(dir(self)) & set(kwargs)
if conflicts: if conflicts:
raise TypeError( raise TypeError('%s already has attribute(s): %s' % (
"%s already has attribute(s): %s" self.__class__.__name__, ', '.join(conflicts)))
% (self.__class__.__name__, ", ".join(conflicts))
)
# Assign metadata to the instance # Assign metadata to the instance
# This efficient method is available because no __slots__ are defined. # This efficient method is available because no __slots__ are defined.
self.__dict__.update(kwargs) self.__dict__.update(kwargs)
# Adjust the appropriate creation counter, and save our local copy. # Adjust the appropriate creation counter, and save our local copy.
if self.db_field == "_id": if self.db_field == '_id':
self.creation_counter = BaseField.auto_creation_counter self.creation_counter = BaseField.auto_creation_counter
BaseField.auto_creation_counter -= 1 BaseField.auto_creation_counter -= 1
else: else:
@ -121,7 +111,8 @@ class BaseField:
BaseField.creation_counter += 1 BaseField.creation_counter += 1
def __get__(self, instance, owner): def __get__(self, instance, owner):
"""Descriptor for retrieving a value from a field in a document.""" """Descriptor for retrieving a value from a field in a document.
"""
if instance is None: if instance is None:
# Document class being used rather than a document object # Document class being used rather than a document object
return self return self
@ -130,9 +121,11 @@ class BaseField:
return instance._data.get(self.name) return instance._data.get(self.name)
def __set__(self, instance, value): def __set__(self, instance, value):
"""Descriptor for assigning a value to a field in a document.""" """Descriptor for assigning a value to a field in a document.
# If setting to None and there is a default value provided for this """
# field, then set the value to the default value.
# If setting to None and there is a default
# Then set the value to the default value
if value is None: if value is None:
if self.null: if self.null:
value = None value = None
@ -143,29 +136,24 @@ class BaseField:
if instance._initialised: if instance._initialised:
try: try:
value_has_changed = ( if (self.name not in instance._data or
self.name not in instance._data instance._data[self.name] != value):
or instance._data[self.name] != value
)
if value_has_changed:
instance._mark_as_changed(self.name) instance._mark_as_changed(self.name)
except Exception: except Exception:
# Some values can't be compared and throw an error when we # Values cant be compared eg: naive and tz datetimes
# attempt to do so (e.g. tz-naive and tz-aware datetimes). # So mark it as changed
# Mark the field as changed in such cases.
instance._mark_as_changed(self.name) instance._mark_as_changed(self.name)
EmbeddedDocument = _import_class("EmbeddedDocument") EmbeddedDocument = _import_class('EmbeddedDocument')
if isinstance(value, EmbeddedDocument): if isinstance(value, EmbeddedDocument):
value._instance = weakref.proxy(instance) value._instance = weakref.proxy(instance)
elif isinstance(value, (list, tuple)): elif isinstance(value, (list, tuple)):
for v in value: for v in value:
if isinstance(v, EmbeddedDocument): if isinstance(v, EmbeddedDocument):
v._instance = weakref.proxy(instance) v._instance = weakref.proxy(instance)
instance._data[self.name] = value instance._data[self.name] = value
def error(self, message="", errors=None, field_name=None): def error(self, message='', errors=None, field_name=None):
"""Raise a ValidationError.""" """Raise a ValidationError."""
field_name = field_name if field_name else self.name field_name = field_name if field_name else self.name
raise ValidationError(message, errors=errors, field_name=field_name) raise ValidationError(message, errors=errors, field_name=field_name)
@ -182,11 +170,11 @@ class BaseField:
"""Helper method to call to_mongo with proper inputs.""" """Helper method to call to_mongo with proper inputs."""
f_inputs = self.to_mongo.__code__.co_varnames f_inputs = self.to_mongo.__code__.co_varnames
ex_vars = {} ex_vars = {}
if "fields" in f_inputs: if 'fields' in f_inputs:
ex_vars["fields"] = fields ex_vars['fields'] = fields
if "use_db_field" in f_inputs: if 'use_db_field' in f_inputs:
ex_vars["use_db_field"] = use_db_field ex_vars['use_db_field'] = use_db_field
return self.to_mongo(value, **ex_vars) return self.to_mongo(value, **ex_vars)
@ -201,8 +189,8 @@ class BaseField:
pass pass
def _validate_choices(self, value): def _validate_choices(self, value):
Document = _import_class("Document") Document = _import_class('Document')
EmbeddedDocument = _import_class("EmbeddedDocument") EmbeddedDocument = _import_class('EmbeddedDocument')
choice_list = self.choices choice_list = self.choices
if isinstance(next(iter(choice_list)), (list, tuple)): if isinstance(next(iter(choice_list)), (list, tuple)):
@ -212,12 +200,14 @@ class BaseField:
# Choices which are other types of Documents # Choices which are other types of Documents
if isinstance(value, (Document, EmbeddedDocument)): if isinstance(value, (Document, EmbeddedDocument)):
if not any(isinstance(value, c) for c in choice_list): if not any(isinstance(value, c) for c in choice_list):
self.error("Value must be an instance of %s" % (choice_list)) self.error(
'Value must be an instance of %s' % (
six.text_type(choice_list)
)
)
# Choices which are types other than Documents # Choices which are types other than Documents
else: elif value not in choice_list:
values = value if isinstance(value, (list, tuple)) else [value] self.error('Value must be one of %s' % six.text_type(choice_list))
if len(set(values) - set(choice_list)):
self.error("Value must be one of %s" % str(choice_list))
def _validate(self, value, **kwargs): def _validate(self, value, **kwargs):
# Check the Choices Constraint # Check the Choices Constraint
@ -227,23 +217,11 @@ class BaseField:
# check validation argument # check validation argument
if self.validation is not None: if self.validation is not None:
if callable(self.validation): if callable(self.validation):
try: if not self.validation(value):
# breaking change of 0.18 self.error('Value does not match custom validation method')
# Get rid of True/False-type return for the validation method
# in favor of having validation raising a ValidationError
ret = self.validation(value)
if ret is not None:
raise DeprecatedError(
"validation argument for `%s` must not return anything, "
"it should raise a ValidationError if validation fails"
% self.name
)
except ValidationError as ex:
self.error(str(ex))
else: else:
raise ValueError( raise ValueError('validation argument for "%s" must be a '
'validation argument for `"%s"` must be a ' "callable." % self.name 'callable.' % self.name)
)
self.validate(value, **kwargs) self.validate(value, **kwargs)
@ -265,22 +243,11 @@ class ComplexBaseField(BaseField):
Allows for nesting of embedded documents inside complex types. Allows for nesting of embedded documents inside complex types.
Handles the lazy dereferencing of a queryset by lazily dereferencing all Handles the lazy dereferencing of a queryset by lazily dereferencing all
items in a list / dict rather than one at a time. items in a list / dict rather than one at a time.
.. versionadded:: 0.5
""" """
def __init__(self, field=None, **kwargs): field = None
self.field = field
super().__init__(**kwargs)
@staticmethod
def _lazy_load_refs(instance, name, ref_values, *, max_depth):
_dereference = _import_class("DeReference")()
documents = _dereference(
ref_values,
max_depth=max_depth,
instance=instance,
name=name,
)
return documents
def __get__(self, instance, owner): def __get__(self, instance, owner):
"""Descriptor to automatically dereference references.""" """Descriptor to automatically dereference references."""
@ -288,37 +255,28 @@ class ComplexBaseField(BaseField):
# Document class being used rather than a document object # Document class being used rather than a document object
return self return self
ReferenceField = _import_class("ReferenceField") ReferenceField = _import_class('ReferenceField')
GenericReferenceField = _import_class("GenericReferenceField") GenericReferenceField = _import_class('GenericReferenceField')
EmbeddedDocumentListField = _import_class("EmbeddedDocumentListField") EmbeddedDocumentListField = _import_class('EmbeddedDocumentListField')
dereference = (self._auto_dereference and
(self.field is None or isinstance(self.field,
(GenericReferenceField, ReferenceField))))
auto_dereference = instance._fields[self.name]._auto_dereference _dereference = _import_class('DeReference')()
dereference = auto_dereference and ( self._auto_dereference = instance._fields[self.name]._auto_dereference
self.field is None if instance._initialised and dereference and instance._data.get(self.name):
or isinstance(self.field, (GenericReferenceField, ReferenceField)) instance._data[self.name] = _dereference(
) instance._data.get(self.name), max_depth=1, instance=instance,
name=self.name
if (
instance._initialised
and dereference
and instance._data.get(self.name)
and not getattr(instance._data[self.name], "_dereferenced", False)
):
ref_values = instance._data.get(self.name)
instance._data[self.name] = self._lazy_load_refs(
ref_values=ref_values, instance=instance, name=self.name, max_depth=1
) )
if hasattr(instance._data[self.name], "_dereferenced"):
instance._data[self.name]._dereferenced = True
value = super().__get__(instance, owner) value = super(ComplexBaseField, self).__get__(instance, owner)
# Convert lists / values so we can watch for any changes on them # Convert lists / values so we can watch for any changes on them
if isinstance(value, (list, tuple)): if isinstance(value, (list, tuple)):
if issubclass(type(self), EmbeddedDocumentListField) and not isinstance( if (issubclass(type(self), EmbeddedDocumentListField) and
value, EmbeddedDocumentList not isinstance(value, EmbeddedDocumentList)):
):
value = EmbeddedDocumentList(value, instance, self.name) value = EmbeddedDocumentList(value, instance, self.name)
elif not isinstance(value, BaseList): elif not isinstance(value, BaseList):
value = BaseList(value, instance, self.name) value = BaseList(value, instance, self.name)
@ -327,14 +285,11 @@ class ComplexBaseField(BaseField):
value = BaseDict(value, instance, self.name) value = BaseDict(value, instance, self.name)
instance._data[self.name] = value instance._data[self.name] = value
if ( if (self._auto_dereference and instance._initialised and
auto_dereference isinstance(value, (BaseList, BaseDict)) and
and instance._initialised not value._dereferenced):
and isinstance(value, (BaseList, BaseDict)) value = _dereference(
and not value._dereferenced value, max_depth=1, instance=instance, name=self.name
):
value = self._lazy_load_refs(
ref_values=value, instance=instance, name=self.name, max_depth=1
) )
value._dereferenced = True value._dereferenced = True
instance._data[self.name] = value instance._data[self.name] = value
@ -343,75 +298,66 @@ class ComplexBaseField(BaseField):
def to_python(self, value): def to_python(self, value):
"""Convert a MongoDB-compatible type to a Python type.""" """Convert a MongoDB-compatible type to a Python type."""
if isinstance(value, str): if isinstance(value, six.string_types):
return value return value
if hasattr(value, "to_python"): if hasattr(value, 'to_python'):
return value.to_python() return value.to_python()
BaseDocument = _import_class("BaseDocument")
if isinstance(value, BaseDocument):
# Something is wrong, return the value as it is
return value
is_list = False is_list = False
if not hasattr(value, "items"): if not hasattr(value, 'items'):
try: try:
is_list = True is_list = True
value = {idx: v for idx, v in enumerate(value)} value = {k: v for k, v in enumerate(value)}
except TypeError: # Not iterable return the value except TypeError: # Not iterable return the value
return value return value
if self.field: if self.field:
self.field._auto_dereference = self._auto_dereference self.field._auto_dereference = self._auto_dereference
value_dict = { value_dict = {key: self.field.to_python(item)
key: self.field.to_python(item) for key, item in value.items() for key, item in value.items()}
}
else: else:
Document = _import_class("Document") Document = _import_class('Document')
value_dict = {} value_dict = {}
for k, v in value.items(): for k, v in value.items():
if isinstance(v, Document): if isinstance(v, Document):
# We need the id from the saved object to create the DBRef # We need the id from the saved object to create the DBRef
if v.pk is None: if v.pk is None:
self.error( self.error('You can only reference documents once they'
"You can only reference documents once they" ' have been saved to the database')
" have been saved to the database"
)
collection = v._get_collection_name() collection = v._get_collection_name()
value_dict[k] = DBRef(collection, v.pk) value_dict[k] = DBRef(collection, v.pk)
elif hasattr(v, "to_python"): elif hasattr(v, 'to_python'):
value_dict[k] = v.to_python() value_dict[k] = v.to_python()
else: else:
value_dict[k] = self.to_python(v) value_dict[k] = self.to_python(v)
if is_list: # Convert back to a list if is_list: # Convert back to a list
return [ return [v for _, v in sorted(value_dict.items(),
v for _, v in sorted(value_dict.items(), key=operator.itemgetter(0)) key=operator.itemgetter(0))]
]
return value_dict return value_dict
def to_mongo(self, value, use_db_field=True, fields=None): def to_mongo(self, value, use_db_field=True, fields=None):
"""Convert a Python type to a MongoDB-compatible type.""" """Convert a Python type to a MongoDB-compatible type."""
Document = _import_class("Document") Document = _import_class('Document')
EmbeddedDocument = _import_class("EmbeddedDocument") EmbeddedDocument = _import_class('EmbeddedDocument')
GenericReferenceField = _import_class("GenericReferenceField") GenericReferenceField = _import_class('GenericReferenceField')
if isinstance(value, str): if isinstance(value, six.string_types):
return value return value
if hasattr(value, "to_mongo"): if hasattr(value, 'to_mongo'):
if isinstance(value, Document): if isinstance(value, Document):
return GenericReferenceField().to_mongo(value) return GenericReferenceField().to_mongo(value)
cls = value.__class__ cls = value.__class__
val = value.to_mongo(use_db_field, fields) val = value.to_mongo(use_db_field, fields)
# If it's a document that is not inherited add _cls # If it's a document that is not inherited add _cls
if isinstance(value, EmbeddedDocument): if isinstance(value, EmbeddedDocument):
val["_cls"] = cls.__name__ val['_cls'] = cls.__name__
return val return val
is_list = False is_list = False
if not hasattr(value, "items"): if not hasattr(value, 'items'):
try: try:
is_list = True is_list = True
value = {k: v for k, v in enumerate(value)} value = {k: v for k, v in enumerate(value)}
@ -421,51 +367,48 @@ class ComplexBaseField(BaseField):
if self.field: if self.field:
value_dict = { value_dict = {
key: self.field._to_mongo_safe_call(item, use_db_field, fields) key: self.field._to_mongo_safe_call(item, use_db_field, fields)
for key, item in value.items() for key, item in value.iteritems()
} }
else: else:
value_dict = {} value_dict = {}
for k, v in value.items(): for k, v in value.iteritems():
if isinstance(v, Document): if isinstance(v, Document):
# We need the id from the saved object to create the DBRef # We need the id from the saved object to create the DBRef
if v.pk is None: if v.pk is None:
self.error( self.error('You can only reference documents once they'
"You can only reference documents once they" ' have been saved to the database')
" have been saved to the database"
)
# If its a document that is not inheritable it won't have # If its a document that is not inheritable it won't have
# any _cls data so make it a generic reference allows # any _cls data so make it a generic reference allows
# us to dereference # us to dereference
meta = getattr(v, "_meta", {}) meta = getattr(v, '_meta', {})
allow_inheritance = meta.get("allow_inheritance") allow_inheritance = meta.get('allow_inheritance')
if not allow_inheritance and not self.field: if not allow_inheritance and not self.field:
value_dict[k] = GenericReferenceField().to_mongo(v) value_dict[k] = GenericReferenceField().to_mongo(v)
else: else:
collection = v._get_collection_name() collection = v._get_collection_name()
value_dict[k] = DBRef(collection, v.pk) value_dict[k] = DBRef(collection, v.pk)
elif hasattr(v, "to_mongo"): elif hasattr(v, 'to_mongo'):
cls = v.__class__ cls = v.__class__
val = v.to_mongo(use_db_field, fields) val = v.to_mongo(use_db_field, fields)
# If it's a document that is not inherited add _cls # If it's a document that is not inherited add _cls
if isinstance(v, (Document, EmbeddedDocument)): if isinstance(v, (Document, EmbeddedDocument)):
val["_cls"] = cls.__name__ val['_cls'] = cls.__name__
value_dict[k] = val value_dict[k] = val
else: else:
value_dict[k] = self.to_mongo(v, use_db_field, fields) value_dict[k] = self.to_mongo(v, use_db_field, fields)
if is_list: # Convert back to a list if is_list: # Convert back to a list
return [ return [v for _, v in sorted(value_dict.items(),
v for _, v in sorted(value_dict.items(), key=operator.itemgetter(0)) key=operator.itemgetter(0))]
]
return value_dict return value_dict
def validate(self, value): def validate(self, value):
"""If field is provided ensure the value is valid.""" """If field is provided ensure the value is valid."""
errors = {} errors = {}
if self.field: if self.field:
if hasattr(value, "items"): if hasattr(value, 'iteritems') or hasattr(value, 'items'):
sequence = value.items() sequence = value.iteritems()
else: else:
sequence = enumerate(value) sequence = enumerate(value)
for k, v in sequence: for k, v in sequence:
@ -478,10 +421,11 @@ class ComplexBaseField(BaseField):
if errors: if errors:
field_class = self.field.__class__.__name__ field_class = self.field.__class__.__name__
self.error(f"Invalid {field_class} item ({value})", errors=errors) self.error('Invalid %s item (%s)' % (field_class, value),
errors=errors)
# Don't allow empty values if required # Don't allow empty values if required
if self.required and not value: if self.required and not value:
self.error("Field is required and cannot be empty") self.error('Field is required and cannot be empty')
def prepare_query_value(self, op, value): def prepare_query_value(self, op, value):
return self.to_mongo(value) return self.to_mongo(value)
@ -511,9 +455,10 @@ class ObjectIdField(BaseField):
def to_mongo(self, value): def to_mongo(self, value):
if not isinstance(value, ObjectId): if not isinstance(value, ObjectId):
try: try:
return ObjectId(str(value)) return ObjectId(six.text_type(value))
except Exception as e: except Exception as e:
self.error(str(e)) # e.message attribute has been deprecated since Python 2.6
self.error(six.text_type(e))
return value return value
def prepare_query_value(self, op, value): def prepare_query_value(self, op, value):
@ -521,82 +466,84 @@ class ObjectIdField(BaseField):
def validate(self, value): def validate(self, value):
try: try:
ObjectId(str(value)) ObjectId(six.text_type(value))
except Exception: except Exception:
self.error("Invalid ObjectID") self.error('Invalid Object ID')
class GeoJsonBaseField(BaseField): class GeoJsonBaseField(BaseField):
"""A geo json field storing a geojson style object.""" """A geo json field storing a geojson style object.
.. versionadded:: 0.8
"""
_geo_index = pymongo.GEOSPHERE _geo_index = pymongo.GEOSPHERE
_type = "GeoBase" _type = 'GeoBase'
def __init__(self, auto_index=True, *args, **kwargs): def __init__(self, auto_index=True, *args, **kwargs):
""" """
:param bool auto_index: Automatically create a '2dsphere' index.\ :param bool auto_index: Automatically create a '2dsphere' index.\
Defaults to `True`. Defaults to `True`.
""" """
self._name = "%sField" % self._type self._name = '%sField' % self._type
if not auto_index: if not auto_index:
self._geo_index = False self._geo_index = False
super().__init__(*args, **kwargs) super(GeoJsonBaseField, self).__init__(*args, **kwargs)
def validate(self, value): def validate(self, value):
"""Validate the GeoJson object based on its type.""" """Validate the GeoJson object based on its type."""
if isinstance(value, dict): if isinstance(value, dict):
if set(value.keys()) == {"type", "coordinates"}: if set(value.keys()) == set(['type', 'coordinates']):
if value["type"] != self._type: if value['type'] != self._type:
self.error(f'{self._name} type must be "{self._type}"') self.error('%s type must be "%s"' %
return self.validate(value["coordinates"]) (self._name, self._type))
return self.validate(value['coordinates'])
else: else:
self.error( self.error('%s can only accept a valid GeoJson dictionary'
"%s can only accept a valid GeoJson dictionary" ' or lists of (x, y)' % self._name)
" or lists of (x, y)" % self._name
)
return return
elif not isinstance(value, (list, tuple)): elif not isinstance(value, (list, tuple)):
self.error("%s can only accept lists of [x, y]" % self._name) self.error('%s can only accept lists of [x, y]' % self._name)
return return
validate = getattr(self, "_validate_%s" % self._type.lower()) validate = getattr(self, '_validate_%s' % self._type.lower())
error = validate(value) error = validate(value)
if error: if error:
self.error(error) self.error(error)
def _validate_polygon(self, value, top_level=True): def _validate_polygon(self, value, top_level=True):
if not isinstance(value, (list, tuple)): if not isinstance(value, (list, tuple)):
return "Polygons must contain list of linestrings" return 'Polygons must contain list of linestrings'
# Quick and dirty validator # Quick and dirty validator
try: try:
value[0][0][0] value[0][0][0]
except (TypeError, IndexError): except (TypeError, IndexError):
return "Invalid Polygon must contain at least one valid linestring" return 'Invalid Polygon must contain at least one valid linestring'
errors = [] errors = []
for val in value: for val in value:
error = self._validate_linestring(val, False) error = self._validate_linestring(val, False)
if not error and val[0] != val[-1]: if not error and val[0] != val[-1]:
error = "LineStrings must start and end at the same point" error = 'LineStrings must start and end at the same point'
if error and error not in errors: if error and error not in errors:
errors.append(error) errors.append(error)
if errors: if errors:
if top_level: if top_level:
return "Invalid Polygon:\n%s" % ", ".join(errors) return 'Invalid Polygon:\n%s' % ', '.join(errors)
else: else:
return "%s" % ", ".join(errors) return '%s' % ', '.join(errors)
def _validate_linestring(self, value, top_level=True): def _validate_linestring(self, value, top_level=True):
"""Validate a linestring.""" """Validate a linestring."""
if not isinstance(value, (list, tuple)): if not isinstance(value, (list, tuple)):
return "LineStrings must contain list of coordinate pairs" return 'LineStrings must contain list of coordinate pairs'
# Quick and dirty validator # Quick and dirty validator
try: try:
value[0][0] value[0][0]
except (TypeError, IndexError): except (TypeError, IndexError):
return "Invalid LineString must contain at least one valid point" return 'Invalid LineString must contain at least one valid point'
errors = [] errors = []
for val in value: for val in value:
@ -605,30 +552,29 @@ class GeoJsonBaseField(BaseField):
errors.append(error) errors.append(error)
if errors: if errors:
if top_level: if top_level:
return "Invalid LineString:\n%s" % ", ".join(errors) return 'Invalid LineString:\n%s' % ', '.join(errors)
else: else:
return "%s" % ", ".join(errors) return '%s' % ', '.join(errors)
def _validate_point(self, value): def _validate_point(self, value):
"""Validate each set of coords""" """Validate each set of coords"""
if not isinstance(value, (list, tuple)): if not isinstance(value, (list, tuple)):
return "Points must be a list of coordinate pairs" return 'Points must be a list of coordinate pairs'
elif not len(value) == 2: elif not len(value) == 2:
return "Value (%s) must be a two-dimensional point" % repr(value) return 'Value (%s) must be a two-dimensional point' % repr(value)
elif not isinstance(value[0], (float, int)) or not isinstance( elif (not isinstance(value[0], (float, int)) or
value[1], (float, int) not isinstance(value[1], (float, int))):
): return 'Both values (%s) in point must be float or int' % repr(value)
return "Both values (%s) in point must be float or int" % repr(value)
def _validate_multipoint(self, value): def _validate_multipoint(self, value):
if not isinstance(value, (list, tuple)): if not isinstance(value, (list, tuple)):
return "MultiPoint must be a list of Point" return 'MultiPoint must be a list of Point'
# Quick and dirty validator # Quick and dirty validator
try: try:
value[0][0] value[0][0]
except (TypeError, IndexError): except (TypeError, IndexError):
return "Invalid MultiPoint must contain at least one valid point" return 'Invalid MultiPoint must contain at least one valid point'
errors = [] errors = []
for point in value: for point in value:
@ -637,17 +583,17 @@ class GeoJsonBaseField(BaseField):
errors.append(error) errors.append(error)
if errors: if errors:
return "%s" % ", ".join(errors) return '%s' % ', '.join(errors)
def _validate_multilinestring(self, value, top_level=True): def _validate_multilinestring(self, value, top_level=True):
if not isinstance(value, (list, tuple)): if not isinstance(value, (list, tuple)):
return "MultiLineString must be a list of LineString" return 'MultiLineString must be a list of LineString'
# Quick and dirty validator # Quick and dirty validator
try: try:
value[0][0][0] value[0][0][0]
except (TypeError, IndexError): except (TypeError, IndexError):
return "Invalid MultiLineString must contain at least one valid linestring" return 'Invalid MultiLineString must contain at least one valid linestring'
errors = [] errors = []
for linestring in value: for linestring in value:
@ -657,19 +603,19 @@ class GeoJsonBaseField(BaseField):
if errors: if errors:
if top_level: if top_level:
return "Invalid MultiLineString:\n%s" % ", ".join(errors) return 'Invalid MultiLineString:\n%s' % ', '.join(errors)
else: else:
return "%s" % ", ".join(errors) return '%s' % ', '.join(errors)
def _validate_multipolygon(self, value): def _validate_multipolygon(self, value):
if not isinstance(value, (list, tuple)): if not isinstance(value, (list, tuple)):
return "MultiPolygon must be a list of Polygon" return 'MultiPolygon must be a list of Polygon'
# Quick and dirty validator # Quick and dirty validator
try: try:
value[0][0][0][0] value[0][0][0][0]
except (TypeError, IndexError): except (TypeError, IndexError):
return "Invalid MultiPolygon must contain at least one valid Polygon" return 'Invalid MultiPolygon must contain at least one valid Polygon'
errors = [] errors = []
for polygon in value: for polygon in value:
@ -678,9 +624,9 @@ class GeoJsonBaseField(BaseField):
errors.append(error) errors.append(error)
if errors: if errors:
return "Invalid MultiPolygon:\n%s" % ", ".join(errors) return 'Invalid MultiPolygon:\n%s' % ', '.join(errors)
def to_mongo(self, value): def to_mongo(self, value):
if isinstance(value, dict): if isinstance(value, dict):
return value return value
return SON([("type", self._type), ("coordinates", value)]) return SON([('type', self._type), ('coordinates', value)])

View File

@ -1,75 +1,68 @@
import itertools
import warnings import warnings
import six
from mongoengine.base.common import _document_registry from mongoengine.base.common import _document_registry
from mongoengine.base.fields import ( from mongoengine.base.fields import BaseField, ComplexBaseField, ObjectIdField
BaseField,
ComplexBaseField,
ObjectIdField,
)
from mongoengine.common import _import_class from mongoengine.common import _import_class
from mongoengine.errors import InvalidDocumentError from mongoengine.errors import InvalidDocumentError
from mongoengine.queryset import ( from mongoengine.queryset import (DO_NOTHING, DoesNotExist,
DO_NOTHING, MultipleObjectsReturned,
DoesNotExist, QuerySetManager)
MultipleObjectsReturned,
QuerySetManager,
)
__all__ = ("DocumentMetaclass", "TopLevelDocumentMetaclass")
__all__ = ('DocumentMetaclass', 'TopLevelDocumentMetaclass')
class DocumentMetaclass(type): class DocumentMetaclass(type):
"""Metaclass for all documents.""" """Metaclass for all documents."""
# TODO lower complexity of this method # TODO lower complexity of this method
def __new__(mcs, name, bases, attrs): def __new__(cls, name, bases, attrs):
flattened_bases = mcs._get_bases(bases) flattened_bases = cls._get_bases(bases)
super_new = super().__new__ super_new = super(DocumentMetaclass, cls).__new__
# If a base class just call super # If a base class just call super
metaclass = attrs.get("my_metaclass") metaclass = attrs.get('my_metaclass')
if metaclass and issubclass(metaclass, DocumentMetaclass): if metaclass and issubclass(metaclass, DocumentMetaclass):
return super_new(mcs, name, bases, attrs) return super_new(cls, name, bases, attrs)
attrs["_is_document"] = attrs.get("_is_document", False) attrs['_is_document'] = attrs.get('_is_document', False)
attrs["_cached_reference_fields"] = [] attrs['_cached_reference_fields'] = []
# EmbeddedDocuments could have meta data for inheritance # EmbeddedDocuments could have meta data for inheritance
if "meta" in attrs: if 'meta' in attrs:
attrs["_meta"] = attrs.pop("meta") attrs['_meta'] = attrs.pop('meta')
# EmbeddedDocuments should inherit meta data # EmbeddedDocuments should inherit meta data
if "_meta" not in attrs: if '_meta' not in attrs:
meta = MetaDict() meta = MetaDict()
for base in flattened_bases[::-1]: for base in flattened_bases[::-1]:
# Add any mixin metadata from plain objects # Add any mixin metadata from plain objects
if hasattr(base, "meta"): if hasattr(base, 'meta'):
meta.merge(base.meta) meta.merge(base.meta)
elif hasattr(base, "_meta"): elif hasattr(base, '_meta'):
meta.merge(base._meta) meta.merge(base._meta)
attrs["_meta"] = meta attrs['_meta'] = meta
attrs["_meta"][ attrs['_meta']['abstract'] = False # 789: EmbeddedDocument shouldn't inherit abstract
"abstract"
] = False # 789: EmbeddedDocument shouldn't inherit abstract
# If allow_inheritance is True, add a "_cls" string field to the attrs # If allow_inheritance is True, add a "_cls" string field to the attrs
if attrs["_meta"].get("allow_inheritance"): if attrs['_meta'].get('allow_inheritance'):
StringField = _import_class("StringField") StringField = _import_class('StringField')
attrs["_cls"] = StringField() attrs['_cls'] = StringField()
# Handle document Fields # Handle document Fields
# Merge all fields from subclasses # Merge all fields from subclasses
doc_fields = {} doc_fields = {}
for base in flattened_bases[::-1]: for base in flattened_bases[::-1]:
if hasattr(base, "_fields"): if hasattr(base, '_fields'):
doc_fields.update(base._fields) doc_fields.update(base._fields)
# Standard object mixin - merge in any Fields # Standard object mixin - merge in any Fields
if not hasattr(base, "_meta"): if not hasattr(base, '_meta'):
base_fields = {} base_fields = {}
for attr_name, attr_value in base.__dict__.items(): for attr_name, attr_value in base.__dict__.iteritems():
if not isinstance(attr_value, BaseField): if not isinstance(attr_value, BaseField):
continue continue
attr_value.name = attr_name attr_value.name = attr_name
@ -81,7 +74,7 @@ class DocumentMetaclass(type):
# Discover any document fields # Discover any document fields
field_names = {} field_names = {}
for attr_name, attr_value in attrs.items(): for attr_name, attr_value in attrs.iteritems():
if not isinstance(attr_value, BaseField): if not isinstance(attr_value, BaseField):
continue continue
attr_value.name = attr_name attr_value.name = attr_name
@ -90,29 +83,27 @@ class DocumentMetaclass(type):
doc_fields[attr_name] = attr_value doc_fields[attr_name] = attr_value
# Count names to ensure no db_field redefinitions # Count names to ensure no db_field redefinitions
field_names[attr_value.db_field] = ( field_names[attr_value.db_field] = field_names.get(
field_names.get(attr_value.db_field, 0) + 1 attr_value.db_field, 0) + 1
)
# Ensure no duplicate db_fields # Ensure no duplicate db_fields
duplicate_db_fields = [k for k, v in field_names.items() if v > 1] duplicate_db_fields = [k for k, v in field_names.items() if v > 1]
if duplicate_db_fields: if duplicate_db_fields:
msg = "Multiple db_fields defined for: %s " % ", ".join(duplicate_db_fields) msg = ('Multiple db_fields defined for: %s ' %
', '.join(duplicate_db_fields))
raise InvalidDocumentError(msg) raise InvalidDocumentError(msg)
# Set _fields and db_field maps # Set _fields and db_field maps
attrs["_fields"] = doc_fields attrs['_fields'] = doc_fields
attrs["_db_field_map"] = { attrs['_db_field_map'] = {k: getattr(v, 'db_field', k)
k: getattr(v, "db_field", k) for k, v in doc_fields.items() for k, v in doc_fields.items()}
} attrs['_reverse_db_field_map'] = {
attrs["_reverse_db_field_map"] = { v: k for k, v in attrs['_db_field_map'].items()
v: k for k, v in attrs["_db_field_map"].items()
} }
attrs["_fields_ordered"] = tuple( attrs['_fields_ordered'] = tuple(i[1] for i in sorted(
i[1] (v.creation_counter, v.name)
for i in sorted((v.creation_counter, v.name) for v in doc_fields.values()) for v in doc_fields.itervalues()))
)
# #
# Set document hierarchy # Set document hierarchy
@ -120,37 +111,34 @@ class DocumentMetaclass(type):
superclasses = () superclasses = ()
class_name = [name] class_name = [name]
for base in flattened_bases: for base in flattened_bases:
if not getattr(base, "_is_base_cls", True) and not getattr( if (not getattr(base, '_is_base_cls', True) and
base, "_meta", {} not getattr(base, '_meta', {}).get('abstract', True)):
).get("abstract", True):
# Collate hierarchy for _cls and _subclasses # Collate hierarchy for _cls and _subclasses
class_name.append(base.__name__) class_name.append(base.__name__)
if hasattr(base, "_meta"): if hasattr(base, '_meta'):
# Warn if allow_inheritance isn't set and prevent # Warn if allow_inheritance isn't set and prevent
# inheritance of classes where inheritance is set to False # inheritance of classes where inheritance is set to False
allow_inheritance = base._meta.get("allow_inheritance") allow_inheritance = base._meta.get('allow_inheritance')
if not allow_inheritance and not base._meta.get("abstract"): if not allow_inheritance and not base._meta.get('abstract'):
raise ValueError( raise ValueError('Document %s may not be subclassed' %
"Document %s may not be subclassed. " base.__name__)
'To enable inheritance, use the "allow_inheritance" meta attribute.'
% base.__name__
)
# Get superclasses from last base superclass # Get superclasses from last base superclass
document_bases = [b for b in flattened_bases if hasattr(b, "_class_name")] document_bases = [b for b in flattened_bases
if hasattr(b, '_class_name')]
if document_bases: if document_bases:
superclasses = document_bases[0]._superclasses superclasses = document_bases[0]._superclasses
superclasses += (document_bases[0]._class_name,) superclasses += (document_bases[0]._class_name, )
_cls = ".".join(reversed(class_name)) _cls = '.'.join(reversed(class_name))
attrs["_class_name"] = _cls attrs['_class_name'] = _cls
attrs["_superclasses"] = superclasses attrs['_superclasses'] = superclasses
attrs["_subclasses"] = (_cls,) attrs['_subclasses'] = (_cls, )
attrs["_types"] = attrs["_subclasses"] # TODO depreciate _types attrs['_types'] = attrs['_subclasses'] # TODO depreciate _types
# Create the new_class # Create the new_class
new_class = super_new(mcs, name, bases, attrs) new_class = super_new(cls, name, bases, attrs)
# Set _subclasses # Set _subclasses
for base in document_bases: for base in document_bases:
@ -158,12 +146,8 @@ class DocumentMetaclass(type):
base._subclasses += (_cls,) base._subclasses += (_cls,)
base._types = base._subclasses # TODO depreciate _types base._types = base._subclasses # TODO depreciate _types
( (Document, EmbeddedDocument, DictField,
Document, CachedReferenceField) = cls._import_classes()
EmbeddedDocument,
DictField,
CachedReferenceField,
) = mcs._import_classes()
if issubclass(new_class, Document): if issubclass(new_class, Document):
new_class._collection = None new_class._collection = None
@ -171,77 +155,97 @@ class DocumentMetaclass(type):
# Add class to the _document_registry # Add class to the _document_registry
_document_registry[new_class._class_name] = new_class _document_registry[new_class._class_name] = new_class
# In Python 2, User-defined methods objects have special read-only
# attributes 'im_func' and 'im_self' which contain the function obj
# and class instance object respectively. With Python 3 these special
# attributes have been replaced by __func__ and __self__. The Blinker
# module continues to use im_func and im_self, so the code below
# copies __func__ into im_func and __self__ into im_self for
# classmethod objects in Document derived classes.
if six.PY3:
for val in new_class.__dict__.values():
if isinstance(val, classmethod):
f = val.__get__(new_class)
if hasattr(f, '__func__') and not hasattr(f, 'im_func'):
f.__dict__.update({'im_func': getattr(f, '__func__')})
if hasattr(f, '__self__') and not hasattr(f, 'im_self'):
f.__dict__.update({'im_self': getattr(f, '__self__')})
# Handle delete rules # Handle delete rules
for field in new_class._fields.values(): for field in new_class._fields.itervalues():
f = field f = field
if f.owner_document is None: if f.owner_document is None:
f.owner_document = new_class f.owner_document = new_class
delete_rule = getattr(f, "reverse_delete_rule", DO_NOTHING) delete_rule = getattr(f, 'reverse_delete_rule', DO_NOTHING)
if isinstance(f, CachedReferenceField): if isinstance(f, CachedReferenceField):
if issubclass(new_class, EmbeddedDocument): if issubclass(new_class, EmbeddedDocument):
raise InvalidDocumentError('CachedReferenceFields is not '
'allowed in EmbeddedDocuments')
if not f.document_type:
raise InvalidDocumentError( raise InvalidDocumentError(
"CachedReferenceFields is not allowed in EmbeddedDocuments" 'Document is not available to sync')
)
if f.auto_sync: if f.auto_sync:
f.start_listener() f.start_listener()
f.document_type._cached_reference_fields.append(f) f.document_type._cached_reference_fields.append(f)
if isinstance(f, ComplexBaseField) and hasattr(f, "field"): if isinstance(f, ComplexBaseField) and hasattr(f, 'field'):
delete_rule = getattr(f.field, "reverse_delete_rule", DO_NOTHING) delete_rule = getattr(f.field,
'reverse_delete_rule',
DO_NOTHING)
if isinstance(f, DictField) and delete_rule != DO_NOTHING: if isinstance(f, DictField) and delete_rule != DO_NOTHING:
msg = ( msg = ('Reverse delete rules are not supported '
"Reverse delete rules are not supported " 'for %s (field: %s)' %
"for %s (field: %s)" % (field.__class__.__name__, field.name) (field.__class__.__name__, field.name))
)
raise InvalidDocumentError(msg) raise InvalidDocumentError(msg)
f = field.field f = field.field
if delete_rule != DO_NOTHING: if delete_rule != DO_NOTHING:
if issubclass(new_class, EmbeddedDocument): if issubclass(new_class, EmbeddedDocument):
msg = ( msg = ('Reverse delete rules are not supported for '
"Reverse delete rules are not supported for " 'EmbeddedDocuments (field: %s)' % field.name)
"EmbeddedDocuments (field: %s)" % field.name
)
raise InvalidDocumentError(msg) raise InvalidDocumentError(msg)
f.document_type.register_delete_rule(new_class, field.name, delete_rule) f.document_type.register_delete_rule(new_class,
field.name, delete_rule)
if ( if (field.name and hasattr(Document, field.name) and
field.name EmbeddedDocument not in new_class.mro()):
and hasattr(Document, field.name) msg = ('%s is a document method and not a valid '
and EmbeddedDocument not in new_class.mro() 'field name' % field.name)
):
msg = "%s is a document method and not a valid field name" % field.name
raise InvalidDocumentError(msg) raise InvalidDocumentError(msg)
return new_class return new_class
def add_to_class(self, name, value):
setattr(self, name, value)
@classmethod @classmethod
def _get_bases(mcs, bases): def _get_bases(cls, bases):
if isinstance(bases, BasesTuple): if isinstance(bases, BasesTuple):
return bases return bases
seen = [] seen = []
bases = mcs.__get_bases(bases) bases = cls.__get_bases(bases)
unique_bases = (b for b in bases if not (b in seen or seen.append(b))) unique_bases = (b for b in bases if not (b in seen or seen.append(b)))
return BasesTuple(unique_bases) return BasesTuple(unique_bases)
@classmethod @classmethod
def __get_bases(mcs, bases): def __get_bases(cls, bases):
for base in bases: for base in bases:
if base is object: if base is object:
continue continue
yield base yield base
yield from mcs.__get_bases(base.__bases__) for child_base in cls.__get_bases(base.__bases__):
yield child_base
@classmethod @classmethod
def _import_classes(mcs): def _import_classes(cls):
Document = _import_class("Document") Document = _import_class('Document')
EmbeddedDocument = _import_class("EmbeddedDocument") EmbeddedDocument = _import_class('EmbeddedDocument')
DictField = _import_class("DictField") DictField = _import_class('DictField')
CachedReferenceField = _import_class("CachedReferenceField") CachedReferenceField = _import_class('CachedReferenceField')
return Document, EmbeddedDocument, DictField, CachedReferenceField return Document, EmbeddedDocument, DictField, CachedReferenceField
@ -250,213 +254,193 @@ class TopLevelDocumentMetaclass(DocumentMetaclass):
collection in the database. collection in the database.
""" """
def __new__(mcs, name, bases, attrs): def __new__(cls, name, bases, attrs):
flattened_bases = mcs._get_bases(bases) flattened_bases = cls._get_bases(bases)
super_new = super().__new__ super_new = super(TopLevelDocumentMetaclass, cls).__new__
# Set default _meta data if base class, otherwise get user defined meta # Set default _meta data if base class, otherwise get user defined meta
if attrs.get("my_metaclass") == TopLevelDocumentMetaclass: if attrs.get('my_metaclass') == TopLevelDocumentMetaclass:
# defaults # defaults
attrs["_meta"] = { attrs['_meta'] = {
"abstract": True, 'abstract': True,
"max_documents": None, 'max_documents': None,
"max_size": None, 'max_size': None,
"ordering": [], # default ordering applied at runtime 'ordering': [], # default ordering applied at runtime
"indexes": [], # indexes to be ensured at runtime 'indexes': [], # indexes to be ensured at runtime
"id_field": None, 'id_field': None,
"index_background": False, 'index_background': False,
"index_opts": None, 'index_drop_dups': False,
"delete_rules": None, 'index_opts': None,
'delete_rules': None,
# allow_inheritance can be True, False, and None. True means # allow_inheritance can be True, False, and None. True means
# "allow inheritance", False means "don't allow inheritance", # "allow inheritance", False means "don't allow inheritance",
# None means "do whatever your parent does, or don't allow # None means "do whatever your parent does, or don't allow
# inheritance if you're a top-level class". # inheritance if you're a top-level class".
"allow_inheritance": None, 'allow_inheritance': None,
} }
attrs["_is_base_cls"] = True attrs['_is_base_cls'] = True
attrs["_meta"].update(attrs.get("meta", {})) attrs['_meta'].update(attrs.get('meta', {}))
else: else:
attrs["_meta"] = attrs.get("meta", {}) attrs['_meta'] = attrs.get('meta', {})
# Explicitly set abstract to false unless set # Explicitly set abstract to false unless set
attrs["_meta"]["abstract"] = attrs["_meta"].get("abstract", False) attrs['_meta']['abstract'] = attrs['_meta'].get('abstract', False)
attrs["_is_base_cls"] = False attrs['_is_base_cls'] = False
# Set flag marking as document class - as opposed to an object mixin # Set flag marking as document class - as opposed to an object mixin
attrs["_is_document"] = True attrs['_is_document'] = True
# Ensure queryset_class is inherited # Ensure queryset_class is inherited
if "objects" in attrs: if 'objects' in attrs:
manager = attrs["objects"] manager = attrs['objects']
if hasattr(manager, "queryset_class"): if hasattr(manager, 'queryset_class'):
attrs["_meta"]["queryset_class"] = manager.queryset_class attrs['_meta']['queryset_class'] = manager.queryset_class
# Clean up top level meta # Clean up top level meta
if "meta" in attrs: if 'meta' in attrs:
del attrs["meta"] del attrs['meta']
# Find the parent document class # Find the parent document class
parent_doc_cls = [ parent_doc_cls = [b for b in flattened_bases
b for b in flattened_bases if b.__class__ == TopLevelDocumentMetaclass if b.__class__ == TopLevelDocumentMetaclass]
]
parent_doc_cls = None if not parent_doc_cls else parent_doc_cls[0] parent_doc_cls = None if not parent_doc_cls else parent_doc_cls[0]
# Prevent classes setting collection different to their parents # Prevent classes setting collection different to their parents
# If parent wasn't an abstract class # If parent wasn't an abstract class
if ( if (parent_doc_cls and 'collection' in attrs.get('_meta', {}) and
parent_doc_cls not parent_doc_cls._meta.get('abstract', True)):
and "collection" in attrs.get("_meta", {}) msg = 'Trying to set a collection on a subclass (%s)' % name
and not parent_doc_cls._meta.get("abstract", True)
):
msg = "Trying to set a collection on a subclass (%s)" % name
warnings.warn(msg, SyntaxWarning) warnings.warn(msg, SyntaxWarning)
del attrs["_meta"]["collection"] del attrs['_meta']['collection']
# Ensure abstract documents have abstract bases # Ensure abstract documents have abstract bases
if attrs.get("_is_base_cls") or attrs["_meta"].get("abstract"): if attrs.get('_is_base_cls') or attrs['_meta'].get('abstract'):
if parent_doc_cls and not parent_doc_cls._meta.get("abstract", False): if (parent_doc_cls and
msg = "Abstract document cannot have non-abstract base" not parent_doc_cls._meta.get('abstract', False)):
msg = 'Abstract document cannot have non-abstract base'
raise ValueError(msg) raise ValueError(msg)
return super_new(mcs, name, bases, attrs) return super_new(cls, name, bases, attrs)
# Merge base class metas. # Merge base class metas.
# Uses a special MetaDict that handles various merging rules # Uses a special MetaDict that handles various merging rules
meta = MetaDict() meta = MetaDict()
for base in flattened_bases[::-1]: for base in flattened_bases[::-1]:
# Add any mixin metadata from plain objects # Add any mixin metadata from plain objects
if hasattr(base, "meta"): if hasattr(base, 'meta'):
meta.merge(base.meta) meta.merge(base.meta)
elif hasattr(base, "_meta"): elif hasattr(base, '_meta'):
meta.merge(base._meta) meta.merge(base._meta)
# Set collection in the meta if its callable # Set collection in the meta if its callable
if getattr(base, "_is_document", False) and not base._meta.get("abstract"): if (getattr(base, '_is_document', False) and
collection = meta.get("collection", None) not base._meta.get('abstract')):
collection = meta.get('collection', None)
if callable(collection): if callable(collection):
meta["collection"] = collection(base) meta['collection'] = collection(base)
meta.merge(attrs.get("_meta", {})) # Top level meta meta.merge(attrs.get('_meta', {})) # Top level meta
# Only simple classes (i.e. direct subclasses of Document) may set # Only simple classes (i.e. direct subclasses of Document) may set
# allow_inheritance to False. If the base Document allows inheritance, # allow_inheritance to False. If the base Document allows inheritance,
# none of its subclasses can override allow_inheritance to False. # none of its subclasses can override allow_inheritance to False.
simple_class = all( simple_class = all([b._meta.get('abstract')
b._meta.get("abstract") for b in flattened_bases if hasattr(b, "_meta") for b in flattened_bases if hasattr(b, '_meta')])
)
if ( if (
not simple_class not simple_class and
and meta["allow_inheritance"] is False meta['allow_inheritance'] is False and
and not meta["abstract"] not meta['abstract']
): ):
raise ValueError( raise ValueError('Only direct subclasses of Document may set '
"Only direct subclasses of Document may set " '"allow_inheritance" to False')
'"allow_inheritance" to False'
)
# Set default collection name # Set default collection name
if "collection" not in meta: if 'collection' not in meta:
meta["collection"] = ( meta['collection'] = ''.join('_%s' % c if c.isupper() else c
"".join("_%s" % c if c.isupper() else c for c in name) for c in name).strip('_').lower()
.strip("_") attrs['_meta'] = meta
.lower()
)
attrs["_meta"] = meta
# Call super and get the new class # Call super and get the new class
new_class = super_new(mcs, name, bases, attrs) new_class = super_new(cls, name, bases, attrs)
meta = new_class._meta meta = new_class._meta
# Set index specifications # Set index specifications
meta["index_specs"] = new_class._build_index_specs(meta["indexes"]) meta['index_specs'] = new_class._build_index_specs(meta['indexes'])
# If collection is a callable - call it and set the value # If collection is a callable - call it and set the value
collection = meta.get("collection") collection = meta.get('collection')
if callable(collection): if callable(collection):
new_class._meta["collection"] = collection(new_class) new_class._meta['collection'] = collection(new_class)
# Provide a default queryset unless exists or one has been set # Provide a default queryset unless exists or one has been set
if "objects" not in dir(new_class): if 'objects' not in dir(new_class):
new_class.objects = QuerySetManager() new_class.objects = QuerySetManager()
# Validate the fields and set primary key if needed # Validate the fields and set primary key if needed
for field_name, field in new_class._fields.items(): for field_name, field in new_class._fields.iteritems():
if field.primary_key: if field.primary_key:
# Ensure only one primary key is set # Ensure only one primary key is set
current_pk = new_class._meta.get("id_field") current_pk = new_class._meta.get('id_field')
if current_pk and current_pk != field_name: if current_pk and current_pk != field_name:
raise ValueError("Cannot override primary key field") raise ValueError('Cannot override primary key field')
# Set primary key # Set primary key
if not current_pk: if not current_pk:
new_class._meta["id_field"] = field_name new_class._meta['id_field'] = field_name
new_class.id = field new_class.id = field
# If the document doesn't explicitly define a primary key field, create # Set primary key if not defined by the document
# one. Make it an ObjectIdField and give it a non-clashing name ("id" new_class._auto_id_field = getattr(parent_doc_cls,
# by default, but can be different if that one's taken). '_auto_id_field', False)
if not new_class._meta.get("id_field"): if not new_class._meta.get('id_field'):
id_name, id_db_name = mcs.get_auto_id_names(new_class) # After 0.10, find not existing names, instead of overwriting
new_class._meta["id_field"] = id_name id_name, id_db_name = cls.get_auto_id_names(new_class)
new_class._auto_id_field = True
new_class._meta['id_field'] = id_name
new_class._fields[id_name] = ObjectIdField(db_field=id_db_name) new_class._fields[id_name] = ObjectIdField(db_field=id_db_name)
new_class._fields[id_name].name = id_name new_class._fields[id_name].name = id_name
new_class.id = new_class._fields[id_name] new_class.id = new_class._fields[id_name]
new_class._db_field_map[id_name] = id_db_name new_class._db_field_map[id_name] = id_db_name
new_class._reverse_db_field_map[id_db_name] = id_name new_class._reverse_db_field_map[id_db_name] = id_name
# Prepend id field to _fields_ordered
new_class._fields_ordered = (id_name, ) + new_class._fields_ordered
# Prepend the ID field to _fields_ordered (so that it's *always* # Merge in exceptions with parent hierarchy
# the first field).
new_class._fields_ordered = (id_name,) + new_class._fields_ordered
# Merge in exceptions with parent hierarchy.
exceptions_to_merge = (DoesNotExist, MultipleObjectsReturned) exceptions_to_merge = (DoesNotExist, MultipleObjectsReturned)
module = attrs.get("__module__") module = attrs.get('__module__')
for exc in exceptions_to_merge: for exc in exceptions_to_merge:
name = exc.__name__ name = exc.__name__
parents = tuple( parents = tuple(getattr(base, name) for base in flattened_bases
getattr(base, name) for base in flattened_bases if hasattr(base, name) if hasattr(base, name)) or (exc,)
) or (exc,) # Create new exception and set to new_class
exception = type(name, parents, {'__module__': module})
# Create a new exception and set it as an attribute on the new
# class.
exception = type(name, parents, {"__module__": module})
setattr(new_class, name, exception) setattr(new_class, name, exception)
return new_class return new_class
@classmethod @classmethod
def get_auto_id_names(mcs, new_class): def get_auto_id_names(cls, new_class):
"""Find a name for the automatic ID field for the given new class. id_name, id_db_name = ('id', '_id')
if id_name not in new_class._fields and \
Return a two-element tuple where the first item is the field name (i.e. id_db_name not in (v.db_field for v in new_class._fields.values()):
the attribute name on the object) and the second element is the DB
field name (i.e. the name of the key stored in MongoDB).
Defaults to ('id', '_id'), or generates a non-clashing name in the form
of ('auto_id_X', '_auto_id_X') if the default name is already taken.
"""
id_name, id_db_name = ("id", "_id")
existing_fields = {field_name for field_name in new_class._fields}
existing_db_fields = {v.db_field for v in new_class._fields.values()}
if id_name not in existing_fields and id_db_name not in existing_db_fields:
return id_name, id_db_name return id_name, id_db_name
id_basename, id_db_basename, i = 'auto_id', '_auto_id', 0
id_basename, id_db_basename, i = ("auto_id", "_auto_id", 0) while id_name in new_class._fields or \
for i in itertools.count(): id_db_name in (v.db_field for v in new_class._fields.values()):
id_name = f"{id_basename}_{i}" id_name = '{0}_{1}'.format(id_basename, i)
id_db_name = f"{id_db_basename}_{i}" id_db_name = '{0}_{1}'.format(id_db_basename, i)
if id_name not in existing_fields and id_db_name not in existing_db_fields: i += 1
return id_name, id_db_name return id_name, id_db_name
class MetaDict(dict): class MetaDict(dict):
"""Custom dictionary for meta classes. """Custom dictionary for meta classes.
Handles the merging of set indexes Handles the merging of set indexes
""" """
_merge_options = ('indexes',)
_merge_options = ("indexes",)
def merge(self, new_options): def merge(self, new_options):
for k, v in new_options.items(): for k, v in new_options.iteritems():
if k in self._merge_options: if k in self._merge_options:
self[k] = self.get(k, []) + v self[k] = self.get(k, []) + v
else: else:
@ -465,5 +449,4 @@ class MetaDict(dict):
class BasesTuple(tuple): class BasesTuple(tuple):
"""Special class to handle introspection of bases tuple in __new__""" """Special class to handle introspection of bases tuple in __new__"""
pass pass

View File

@ -1,22 +0,0 @@
import re
class LazyRegexCompiler:
"""Descriptor to allow lazy compilation of regex"""
def __init__(self, pattern, flags=0):
self._pattern = pattern
self._flags = flags
self._compiled_regex = None
@property
def compiled_regex(self):
if self._compiled_regex is None:
self._compiled_regex = re.compile(self._pattern, self._flags)
return self._compiled_regex
def __get__(self, instance, owner):
return self.compiled_regex
def __set__(self, instance, value):
raise AttributeError("Can not set attribute LazyRegexCompiler")

View File

@ -19,44 +19,38 @@ def _import_class(cls_name):
if cls_name in _class_registry_cache: if cls_name in _class_registry_cache:
return _class_registry_cache.get(cls_name) return _class_registry_cache.get(cls_name)
doc_classes = ( doc_classes = ('Document', 'DynamicEmbeddedDocument', 'EmbeddedDocument',
"Document", 'MapReduceDocument')
"DynamicEmbeddedDocument",
"EmbeddedDocument",
"MapReduceDocument",
)
# Field Classes # Field Classes
if not _field_list_cache: if not _field_list_cache:
from mongoengine.fields import __all__ as fields from mongoengine.fields import __all__ as fields
_field_list_cache.extend(fields) _field_list_cache.extend(fields)
from mongoengine.base.fields import __all__ as fields from mongoengine.base.fields import __all__ as fields
_field_list_cache.extend(fields) _field_list_cache.extend(fields)
field_classes = _field_list_cache field_classes = _field_list_cache
deref_classes = ("DeReference",) queryset_classes = ('OperationError',)
deref_classes = ('DeReference',)
if cls_name == "BaseDocument": if cls_name == 'BaseDocument':
from mongoengine.base import document as module from mongoengine.base import document as module
import_classes = ['BaseDocument']
import_classes = ["BaseDocument"]
elif cls_name in doc_classes: elif cls_name in doc_classes:
from mongoengine import document as module from mongoengine import document as module
import_classes = doc_classes import_classes = doc_classes
elif cls_name in field_classes: elif cls_name in field_classes:
from mongoengine import fields as module from mongoengine import fields as module
import_classes = field_classes import_classes = field_classes
elif cls_name in queryset_classes:
from mongoengine import queryset as module
import_classes = queryset_classes
elif cls_name in deref_classes: elif cls_name in deref_classes:
from mongoengine import dereference as module from mongoengine import dereference as module
import_classes = deref_classes import_classes = deref_classes
else: else:
raise ValueError("No import set for: %s" % cls_name) raise ValueError('No import set for: ' % cls_name)
for cls in import_classes: for cls in import_classes:
_class_registry_cache[cls] = getattr(module, cls) _class_registry_cache[cls] = getattr(module, cls)

View File

@ -1,68 +1,48 @@
from pymongo import MongoClient, ReadPreference, uri_parser from pymongo import MongoClient, ReadPreference, uri_parser
from pymongo.database import _check_name import six
__all__ = [ from mongoengine.python_support import IS_PYMONGO_3
"DEFAULT_CONNECTION_NAME",
"DEFAULT_DATABASE_NAME", __all__ = ['MongoEngineConnectionError', 'connect', 'register_connection',
"ConnectionFailure", 'DEFAULT_CONNECTION_NAME']
"connect",
"disconnect",
"disconnect_all",
"get_connection",
"get_db",
"register_connection",
]
DEFAULT_CONNECTION_NAME = "default" DEFAULT_CONNECTION_NAME = 'default'
DEFAULT_DATABASE_NAME = "test"
DEFAULT_HOST = "localhost" if IS_PYMONGO_3:
DEFAULT_PORT = 27017 READ_PREFERENCE = ReadPreference.PRIMARY
else:
from pymongo import MongoReplicaSetClient
READ_PREFERENCE = False
class MongoEngineConnectionError(Exception):
"""Error raised when the database connection can't be established or
when a connection with a requested alias can't be retrieved.
"""
pass
_connection_settings = {} _connection_settings = {}
_connections = {} _connections = {}
_dbs = {} _dbs = {}
READ_PREFERENCE = ReadPreference.PRIMARY
def register_connection(alias, name=None, host=None, port=None,
read_preference=READ_PREFERENCE,
username=None, password=None,
authentication_source=None,
authentication_mechanism=None,
**kwargs):
"""Add a connection.
class ConnectionFailure(Exception): :param alias: the name that will be used to refer to this connection
"""Error raised when the database connection can't be established or throughout MongoEngine
when a connection with a requested alias can't be retrieved.
"""
pass
def _check_db_name(name):
"""Check if a database name is valid.
This functionality is copied from pymongo Database class constructor.
"""
if not isinstance(name, str):
raise TypeError("name must be an instance of %s" % str)
elif name != "$external":
_check_name(name)
def _get_connection_settings(
db=None,
name=None,
host=None,
port=None,
read_preference=READ_PREFERENCE,
username=None,
password=None,
authentication_source=None,
authentication_mechanism=None,
**kwargs,
):
"""Get the connection settings as a dict
:param db: the name of the database to use, for compatibility with connect
:param name: the name of the specific database to use :param name: the name of the specific database to use
:param host: the host name of the: program: `mongod` instance to connect to :param host: the host name of the :program:`mongod` instance to connect to
:param port: the port that the: program: `mongod` instance is running on :param port: the port that the :program:`mongod` instance is running on
:param read_preference: The read preference for the collection :param read_preference: The read preference for the collection
** Added pymongo 2.1
:param username: username to authenticate with :param username: username to authenticate with
:param password: password to authenticate with :param password: password to authenticate with
:param authentication_source: database to authenticate against :param authentication_source: database to authenticate against
@ -70,176 +50,79 @@ def _get_connection_settings(
By default, use SCRAM-SHA-1 with MongoDB 3.0 and later, By default, use SCRAM-SHA-1 with MongoDB 3.0 and later,
MONGODB-CR (MongoDB Challenge Response protocol) for older servers. MONGODB-CR (MongoDB Challenge Response protocol) for older servers.
:param is_mock: explicitly use mongomock for this connection :param is_mock: explicitly use mongomock for this connection
(can also be done by using `mongomock: // ` as db host prefix) (can also be done by using `mongomock://` as db host prefix)
:param kwargs: ad-hoc parameters to be passed into the pymongo driver, :param kwargs: ad-hoc parameters to be passed into the pymongo driver,
for example maxpoolsize, tz_aware, etc. See the documentation for example maxpoolsize, tz_aware, etc. See the documentation
for pymongo's `MongoClient` for a full list. for pymongo's `MongoClient` for a full list.
.. versionchanged:: 0.10.6 - added mongomock support
""" """
conn_settings = { conn_settings = {
"name": name or db or DEFAULT_DATABASE_NAME, 'name': name or 'test',
"host": host or DEFAULT_HOST, 'host': host or 'localhost',
"port": port or DEFAULT_PORT, 'port': port or 27017,
"read_preference": read_preference, 'read_preference': read_preference,
"username": username, 'username': username,
"password": password, 'password': password,
"authentication_source": authentication_source, 'authentication_source': authentication_source,
"authentication_mechanism": authentication_mechanism, 'authentication_mechanism': authentication_mechanism
} }
_check_db_name(conn_settings["name"]) conn_host = conn_settings['host']
conn_host = conn_settings["host"]
# Host can be a list or a string, so if string, force to a list. # Host can be a list or a string, so if string, force to a list.
if isinstance(conn_host, str): if isinstance(conn_host, six.string_types):
conn_host = [conn_host] conn_host = [conn_host]
resolved_hosts = [] resolved_hosts = []
for entity in conn_host: for entity in conn_host:
# Handle Mongomock # Handle Mongomock
if entity.startswith("mongomock://"): if entity.startswith('mongomock://'):
conn_settings["is_mock"] = True conn_settings['is_mock'] = True
# `mongomock://` is not a valid url prefix and must be replaced by `mongodb://` # `mongomock://` is not a valid url prefix and must be replaced by `mongodb://`
new_entity = entity.replace("mongomock://", "mongodb://", 1) resolved_hosts.append(entity.replace('mongomock://', 'mongodb://', 1))
resolved_hosts.append(new_entity)
uri_dict = uri_parser.parse_uri(new_entity)
database = uri_dict.get("database")
if database:
conn_settings["name"] = database
# Handle URI style connections, only updating connection params which # Handle URI style connections, only updating connection params which
# were explicitly specified in the URI. # were explicitly specified in the URI.
elif "://" in entity: elif '://' in entity:
uri_dict = uri_parser.parse_uri(entity) uri_dict = uri_parser.parse_uri(entity)
resolved_hosts.append(entity) resolved_hosts.append(entity)
database = uri_dict.get("database") if uri_dict.get('database'):
if database: conn_settings['name'] = uri_dict.get('database')
conn_settings["name"] = database
for param in ("read_preference", "username", "password"): for param in ('read_preference', 'username', 'password'):
if uri_dict.get(param): if uri_dict.get(param):
conn_settings[param] = uri_dict[param] conn_settings[param] = uri_dict[param]
uri_options = uri_dict["options"] uri_options = uri_dict['options']
if "replicaset" in uri_options: if 'replicaset' in uri_options:
conn_settings["replicaSet"] = uri_options["replicaset"] conn_settings['replicaSet'] = uri_options['replicaset']
if "authsource" in uri_options: if 'authsource' in uri_options:
conn_settings["authentication_source"] = uri_options["authsource"] conn_settings['authentication_source'] = uri_options['authsource']
if "authmechanism" in uri_options: if 'authmechanism' in uri_options:
conn_settings["authentication_mechanism"] = uri_options["authmechanism"] conn_settings['authentication_mechanism'] = uri_options['authmechanism']
if "readpreference" in uri_options:
read_preferences = (
ReadPreference.NEAREST,
ReadPreference.PRIMARY,
ReadPreference.PRIMARY_PREFERRED,
ReadPreference.SECONDARY,
ReadPreference.SECONDARY_PREFERRED,
)
# Starting with PyMongo v3.5, the "readpreference" option is
# returned as a string (e.g. "secondaryPreferred") and not an
# int (e.g. 3).
# TODO simplify the code below once we drop support for
# PyMongo v3.4.
read_pf_mode = uri_options["readpreference"]
if isinstance(read_pf_mode, str):
read_pf_mode = read_pf_mode.lower()
for preference in read_preferences:
if (
preference.name.lower() == read_pf_mode
or preference.mode == read_pf_mode
):
conn_settings["read_preference"] = preference
break
else: else:
resolved_hosts.append(entity) resolved_hosts.append(entity)
conn_settings["host"] = resolved_hosts conn_settings['host'] = resolved_hosts
# Deprecated parameters that should not be passed on # Deprecated parameters that should not be passed on
kwargs.pop("slaves", None) kwargs.pop('slaves', None)
kwargs.pop("is_slave", None) kwargs.pop('is_slave', None)
conn_settings.update(kwargs) conn_settings.update(kwargs)
return conn_settings
def register_connection(
alias,
db=None,
name=None,
host=None,
port=None,
read_preference=READ_PREFERENCE,
username=None,
password=None,
authentication_source=None,
authentication_mechanism=None,
**kwargs,
):
"""Register the connection settings.
:param alias: the name that will be used to refer to this connection throughout MongoEngine
:param db: the name of the database to use, for compatibility with connect
:param name: the name of the specific database to use
:param host: the host name of the: program: `mongod` instance to connect to
:param port: the port that the: program: `mongod` instance is running on
:param read_preference: The read preference for the collection
:param username: username to authenticate with
:param password: password to authenticate with
:param authentication_source: database to authenticate against
:param authentication_mechanism: database authentication mechanisms.
By default, use SCRAM-SHA-1 with MongoDB 3.0 and later,
MONGODB-CR (MongoDB Challenge Response protocol) for older servers.
:param is_mock: explicitly use mongomock for this connection
(can also be done by using `mongomock: // ` as db host prefix)
:param kwargs: ad-hoc parameters to be passed into the pymongo driver,
for example maxpoolsize, tz_aware, etc. See the documentation
for pymongo's `MongoClient` for a full list.
"""
conn_settings = _get_connection_settings(
db=db,
name=name,
host=host,
port=port,
read_preference=read_preference,
username=username,
password=password,
authentication_source=authentication_source,
authentication_mechanism=authentication_mechanism,
**kwargs,
)
_connection_settings[alias] = conn_settings _connection_settings[alias] = conn_settings
def disconnect(alias=DEFAULT_CONNECTION_NAME): def disconnect(alias=DEFAULT_CONNECTION_NAME):
"""Close the connection with a given alias.""" """Close the connection with a given alias."""
from mongoengine import Document
from mongoengine.base.common import _get_documents_by_db
if alias in _connections: if alias in _connections:
get_connection(alias=alias).close() get_connection(alias=alias).close()
del _connections[alias] del _connections[alias]
if alias in _dbs: if alias in _dbs:
# Detach all cached collections in Documents
for doc_cls in _get_documents_by_db(alias, DEFAULT_CONNECTION_NAME):
if issubclass(doc_cls, Document): # Skip EmbeddedDocument
doc_cls._disconnect()
del _dbs[alias] del _dbs[alias]
if alias in _connection_settings:
del _connection_settings[alias]
def disconnect_all():
"""Close all registered database."""
for alias in list(_connections.keys()):
disconnect(alias)
def get_connection(alias=DEFAULT_CONNECTION_NAME, reconnect=False): def get_connection(alias=DEFAULT_CONNECTION_NAME, reconnect=False):
"""Return a connection with a given alias.""" """Return a connection with a given alias."""
@ -254,93 +137,84 @@ def get_connection(alias=DEFAULT_CONNECTION_NAME, reconnect=False):
return _connections[alias] return _connections[alias]
# Validate that the requested alias exists in the _connection_settings. # Validate that the requested alias exists in the _connection_settings.
# Raise ConnectionFailure if it doesn't. # Raise MongoEngineConnectionError if it doesn't.
if alias not in _connection_settings: if alias not in _connection_settings:
if alias == DEFAULT_CONNECTION_NAME: if alias == DEFAULT_CONNECTION_NAME:
msg = "You have not defined a default connection" msg = 'You have not defined a default connection'
else: else:
msg = 'Connection with alias "%s" has not been defined' % alias msg = 'Connection with alias "%s" has not been defined' % alias
raise ConnectionFailure(msg) raise MongoEngineConnectionError(msg)
def _clean_settings(settings_dict): def _clean_settings(settings_dict):
irrelevant_fields_set = { irrelevant_fields = set([
"name", 'name', 'username', 'password', 'authentication_source',
"username", 'authentication_mechanism'
"password", ])
"authentication_source",
"authentication_mechanism",
}
return { return {
k: v for k, v in settings_dict.items() if k not in irrelevant_fields_set k: v for k, v in settings_dict.items()
if k not in irrelevant_fields
} }
raw_conn_settings = _connection_settings[alias].copy()
# Retrieve a copy of the connection settings associated with the requested # Retrieve a copy of the connection settings associated with the requested
# alias and remove the database name and authentication info (we don't # alias and remove the database name and authentication info (we don't
# care about them at this point). # care about them at this point).
conn_settings = _clean_settings(raw_conn_settings) conn_settings = _clean_settings(_connection_settings[alias].copy())
# Determine if we should use PyMongo's or mongomock's MongoClient. # Determine if we should use PyMongo's or mongomock's MongoClient.
is_mock = conn_settings.pop("is_mock", False) is_mock = conn_settings.pop('is_mock', False)
if is_mock: if is_mock:
try: try:
import mongomock import mongomock
except ImportError: except ImportError:
raise RuntimeError("You need mongomock installed to mock MongoEngine.") raise RuntimeError('You need mongomock installed to mock '
'MongoEngine.')
connection_class = mongomock.MongoClient connection_class = mongomock.MongoClient
else: else:
connection_class = MongoClient connection_class = MongoClient
# Re-use existing connection if one is suitable. # For replica set connections with PyMongo 2.x, use
existing_connection = _find_existing_connection(raw_conn_settings) # MongoReplicaSetClient.
if existing_connection: # TODO remove this once we stop supporting PyMongo 2.x.
connection = existing_connection if 'replicaSet' in conn_settings and not IS_PYMONGO_3:
else: connection_class = MongoReplicaSetClient
connection = _create_connection( conn_settings['hosts_or_uri'] = conn_settings.pop('host', None)
alias=alias, connection_class=connection_class, **conn_settings
)
_connections[alias] = connection
return _connections[alias]
# hosts_or_uri has to be a string, so if 'host' was provided
# as a list, join its parts and separate them by ','
if isinstance(conn_settings['hosts_or_uri'], list):
conn_settings['hosts_or_uri'] = ','.join(
conn_settings['hosts_or_uri'])
def _create_connection(alias, connection_class, **connection_settings): # Discard port since it can't be used on MongoReplicaSetClient
""" conn_settings.pop('port', None)
Create the new connection for this alias. Raise
ConnectionFailure if it can't be established.
"""
try:
return connection_class(**connection_settings)
except Exception as e:
raise ConnectionFailure(f"Cannot connect to database {alias} :\n{e}")
# Iterate over all of the connection settings and if a connection with
def _find_existing_connection(connection_settings): # the same parameters is already established, use it instead of creating
""" # a new one.
Check if an existing connection could be reused existing_connection = None
connection_settings_iterator = (
Iterate over all of the connection settings and if an existing connection
with the same parameters is suitable, return it
:param connection_settings: the settings of the new connection
:return: An existing connection or None
"""
connection_settings_bis = (
(db_alias, settings.copy()) (db_alias, settings.copy())
for db_alias, settings in _connection_settings.items() for db_alias, settings in _connection_settings.items()
) )
for db_alias, connection_settings in connection_settings_iterator:
connection_settings = _clean_settings(connection_settings)
if conn_settings == connection_settings and _connections.get(db_alias):
existing_connection = _connections[db_alias]
break
def _clean_settings(settings_dict): # If an existing connection was found, assign it to the new alias
# Only remove the name but it's important to if existing_connection:
# keep the username/password/authentication_source/authentication_mechanism _connections[alias] = existing_connection
# to identify if the connection could be shared (cfr https://github.com/MongoEngine/mongoengine/issues/2047) else:
return {k: v for k, v in settings_dict.items() if k != "name"} # Otherwise, create the new connection for this alias. Raise
# MongoEngineConnectionError if it can't be established.
try:
_connections[alias] = connection_class(**conn_settings)
except Exception as e:
raise MongoEngineConnectionError(
'Cannot connect to database %s :\n%s' % (alias, e))
cleaned_conn_settings = _clean_settings(connection_settings) return _connections[alias]
for db_alias, connection_settings in connection_settings_bis:
db_conn_settings = _clean_settings(connection_settings)
if cleaned_conn_settings == db_conn_settings and _connections.get(db_alias):
return _connections[db_alias]
def get_db(alias=DEFAULT_CONNECTION_NAME, reconnect=False): def get_db(alias=DEFAULT_CONNECTION_NAME, reconnect=False):
@ -350,18 +224,14 @@ def get_db(alias=DEFAULT_CONNECTION_NAME, reconnect=False):
if alias not in _dbs: if alias not in _dbs:
conn = get_connection(alias) conn = get_connection(alias)
conn_settings = _connection_settings[alias] conn_settings = _connection_settings[alias]
db = conn[conn_settings["name"]] db = conn[conn_settings['name']]
auth_kwargs = {"source": conn_settings["authentication_source"]} auth_kwargs = {'source': conn_settings['authentication_source']}
if conn_settings["authentication_mechanism"] is not None: if conn_settings['authentication_mechanism'] is not None:
auth_kwargs["mechanism"] = conn_settings["authentication_mechanism"] auth_kwargs['mechanism'] = conn_settings['authentication_mechanism']
# Authenticate if necessary # Authenticate if necessary
if conn_settings["username"] and ( if conn_settings['username'] and (conn_settings['password'] or
conn_settings["password"] conn_settings['authentication_mechanism'] == 'MONGODB-X509'):
or conn_settings["authentication_mechanism"] == "MONGODB-X509" db.authenticate(conn_settings['username'], conn_settings['password'], **auth_kwargs)
):
db.authenticate(
conn_settings["username"], conn_settings["password"], **auth_kwargs
)
_dbs[alias] = db _dbs[alias] = db
return _dbs[alias] return _dbs[alias]
@ -374,25 +244,14 @@ def connect(db=None, alias=DEFAULT_CONNECTION_NAME, **kwargs):
provide username and password arguments as well. provide username and password arguments as well.
Multiple databases are supported by using aliases. Provide a separate Multiple databases are supported by using aliases. Provide a separate
`alias` to connect to a different instance of: program: `mongod`. `alias` to connect to a different instance of :program:`mongod`.
In order to replace a connection identified by a given alias, you'll
need to call ``disconnect`` first
See the docstring for `register_connection` for more details about all See the docstring for `register_connection` for more details about all
supported kwargs. supported kwargs.
"""
if alias in _connections:
prev_conn_setting = _connection_settings[alias]
new_conn_settings = _get_connection_settings(db, **kwargs)
if new_conn_settings != prev_conn_setting: .. versionchanged:: 0.6 - added multiple database support.
err_msg = ( """
"A different connection with alias `{}` was already " if alias not in _connections:
"registered. Use disconnect() first"
).format(alias)
raise ConnectionFailure(err_msg)
else:
register_connection(alias, db, **kwargs) register_connection(alias, db, **kwargs)
return get_connection(alias) return get_connection(alias)

View File

@ -1,24 +1,12 @@
from contextlib import contextmanager
from pymongo.read_concern import ReadConcern
from pymongo.write_concern import WriteConcern
from mongoengine.common import _import_class from mongoengine.common import _import_class
from mongoengine.connection import DEFAULT_CONNECTION_NAME, get_db from mongoengine.connection import DEFAULT_CONNECTION_NAME, get_db
from mongoengine.pymongo_support import count_documents
__all__ = (
"switch_db",
"switch_collection",
"no_dereference",
"no_sub_classes",
"query_counter",
"set_write_concern",
"set_read_write_concern",
)
class switch_db: __all__ = ('switch_db', 'switch_collection', 'no_dereference',
'no_sub_classes', 'query_counter')
class switch_db(object):
"""switch_db alias context manager. """switch_db alias context manager.
Example :: Example ::
@ -45,21 +33,21 @@ class switch_db:
self.cls = cls self.cls = cls
self.collection = cls._get_collection() self.collection = cls._get_collection()
self.db_alias = db_alias self.db_alias = db_alias
self.ori_db_alias = cls._meta.get("db_alias", DEFAULT_CONNECTION_NAME) self.ori_db_alias = cls._meta.get('db_alias', DEFAULT_CONNECTION_NAME)
def __enter__(self): def __enter__(self):
"""Change the db_alias and clear the cached collection.""" """Change the db_alias and clear the cached collection."""
self.cls._meta["db_alias"] = self.db_alias self.cls._meta['db_alias'] = self.db_alias
self.cls._collection = None self.cls._collection = None
return self.cls return self.cls
def __exit__(self, t, value, traceback): def __exit__(self, t, value, traceback):
"""Reset the db_alias and collection.""" """Reset the db_alias and collection."""
self.cls._meta["db_alias"] = self.ori_db_alias self.cls._meta['db_alias'] = self.ori_db_alias
self.cls._collection = self.collection self.cls._collection = self.collection
class switch_collection: class switch_collection(object):
"""switch_collection alias context manager. """switch_collection alias context manager.
Example :: Example ::
@ -101,7 +89,7 @@ class switch_collection:
self.cls._get_collection_name = self.ori_get_collection_name self.cls._get_collection_name = self.ori_get_collection_name
class no_dereference: class no_dereference(object):
"""no_dereference context manager. """no_dereference context manager.
Turns off all dereferencing in Documents for the duration of the context Turns off all dereferencing in Documents for the duration of the context
@ -118,15 +106,14 @@ class no_dereference:
""" """
self.cls = cls self.cls = cls
ReferenceField = _import_class("ReferenceField") ReferenceField = _import_class('ReferenceField')
GenericReferenceField = _import_class("GenericReferenceField") GenericReferenceField = _import_class('GenericReferenceField')
ComplexBaseField = _import_class("ComplexBaseField") ComplexBaseField = _import_class('ComplexBaseField')
self.deref_fields = [ self.deref_fields = [k for k, v in self.cls._fields.iteritems()
k if isinstance(v, (ReferenceField,
for k, v in self.cls._fields.items() GenericReferenceField,
if isinstance(v, (ReferenceField, GenericReferenceField, ComplexBaseField)) ComplexBaseField))]
]
def __enter__(self): def __enter__(self):
"""Change the objects default and _auto_dereference values.""" """Change the objects default and _auto_dereference values."""
@ -141,7 +128,7 @@ class no_dereference:
return self.cls return self.cls
class no_sub_classes: class no_sub_classes(object):
"""no_sub_classes context manager. """no_sub_classes context manager.
Only returns instances of this class and no sub (inherited) classes:: Only returns instances of this class and no sub (inherited) classes::
@ -156,136 +143,75 @@ class no_sub_classes:
:param cls: the class to turn querying sub classes on :param cls: the class to turn querying sub classes on
""" """
self.cls = cls self.cls = cls
self.cls_initial_subclasses = None
def __enter__(self): def __enter__(self):
"""Change the objects default and _auto_dereference values.""" """Change the objects default and _auto_dereference values."""
self.cls_initial_subclasses = self.cls._subclasses self.cls._all_subclasses = self.cls._subclasses
self.cls._subclasses = (self.cls._class_name,) self.cls._subclasses = (self.cls,)
return self.cls return self.cls
def __exit__(self, t, value, traceback): def __exit__(self, t, value, traceback):
"""Reset the default and _auto_dereference values.""" """Reset the default and _auto_dereference values."""
self.cls._subclasses = self.cls_initial_subclasses self.cls._subclasses = self.cls._all_subclasses
delattr(self.cls, '_all_subclasses')
return self.cls
class query_counter: class query_counter(object):
"""Query_counter context manager to get the number of queries. """Query_counter context manager to get the number of queries."""
This works by updating the `profiling_level` of the database so that all queries get logged,
resetting the db.system.profile collection at the beginning of the context and counting the new entries.
This was designed for debugging purpose. In fact it is a global counter so queries issued by other threads/processes def __init__(self):
can interfere with it """Construct the query_counter."""
self.counter = 0
self.db = get_db()
Usage: def __enter__(self):
"""On every with block we need to drop the profile collection."""
.. code-block:: python
class User(Document):
name = StringField()
with query_counter() as q:
user = User(name='Bob')
assert q == 0 # no query fired yet
user.save()
assert q == 1 # 1 query was fired, an 'insert'
user_bis = User.objects().first()
assert q == 2 # a 2nd query was fired, a 'find_one'
Be aware that:
- Iterating over large amount of documents (>101) makes pymongo issue `getmore` queries to fetch the next batch of documents (https://docs.mongodb.com/manual/tutorial/iterate-a-cursor/#cursor-batches)
- Some queries are ignored by default by the counter (killcursors, db.system.indexes)
"""
def __init__(self, alias=DEFAULT_CONNECTION_NAME):
self.db = get_db(alias=alias)
self.initial_profiling_level = None
self._ctx_query_counter = 0 # number of queries issued by the context
self._ignored_query = {
"ns": {"$ne": "%s.system.indexes" % self.db.name},
"op": {"$ne": "killcursors"}, # MONGODB < 3.2
"command.killCursors": {"$exists": False}, # MONGODB >= 3.2
}
def _turn_on_profiling(self):
self.initial_profiling_level = self.db.profiling_level()
self.db.set_profiling_level(0) self.db.set_profiling_level(0)
self.db.system.profile.drop() self.db.system.profile.drop()
self.db.set_profiling_level(2) self.db.set_profiling_level(2)
def _resets_profiling(self):
self.db.set_profiling_level(self.initial_profiling_level)
def __enter__(self):
self._turn_on_profiling()
return self return self
def __exit__(self, t, value, traceback): def __exit__(self, t, value, traceback):
self._resets_profiling() """Reset the profiling level."""
self.db.set_profiling_level(0)
def __eq__(self, value): def __eq__(self, value):
"""== Compare querycounter."""
counter = self._get_count() counter = self._get_count()
return value == counter return value == counter
def __ne__(self, value): def __ne__(self, value):
"""!= Compare querycounter."""
return not self.__eq__(value) return not self.__eq__(value)
def __lt__(self, value): def __lt__(self, value):
"""< Compare querycounter."""
return self._get_count() < value return self._get_count() < value
def __le__(self, value): def __le__(self, value):
"""<= Compare querycounter."""
return self._get_count() <= value return self._get_count() <= value
def __gt__(self, value): def __gt__(self, value):
"""> Compare querycounter."""
return self._get_count() > value return self._get_count() > value
def __ge__(self, value): def __ge__(self, value):
""">= Compare querycounter."""
return self._get_count() >= value return self._get_count() >= value
def __int__(self): def __int__(self):
"""int representation."""
return self._get_count() return self._get_count()
def __repr__(self): def __repr__(self):
"""repr query_counter as the number of queries.""" """repr query_counter as the number of queries."""
return "%s" % self._get_count() return u"%s" % self._get_count()
def _get_count(self): def _get_count(self):
"""Get the number of queries by counting the current number of entries in db.system.profile """Get the number of queries."""
and substracting the queries issued by this context. In fact everytime this is called, 1 query is ignore_query = {'ns': {'$ne': '%s.system.indexes' % self.db.name}}
issued so we need to balance that count = self.db.system.profile.find(ignore_query).count() - self.counter
""" self.counter += 1
count = (
count_documents(self.db.system.profile, self._ignored_query)
- self._ctx_query_counter
)
self._ctx_query_counter += (
1 # Account for the query we just issued to gather the information
)
return count return count
@contextmanager
def set_write_concern(collection, write_concerns):
combined_concerns = dict(collection.write_concern.document.items())
combined_concerns.update(write_concerns)
yield collection.with_options(write_concern=WriteConcern(**combined_concerns))
@contextmanager
def set_read_write_concern(collection, write_concerns, read_concerns):
combined_write_concerns = dict(collection.write_concern.document.items())
if write_concerns is not None:
combined_write_concerns.update(write_concerns)
combined_read_concerns = dict(collection.read_concern.document.items())
if read_concerns is not None:
combined_read_concerns.update(read_concerns)
yield collection.with_options(
write_concern=WriteConcern(**combined_write_concerns),
read_concern=ReadConcern(**combined_read_concerns),
)

View File

@ -1,25 +1,16 @@
from bson import SON, DBRef from collections import OrderedDict
from bson import DBRef, SON
import six
from mongoengine.base import ( from mongoengine.base import (BaseDict, BaseList, EmbeddedDocumentList,
BaseDict, TopLevelDocumentMetaclass, get_document)
BaseList,
EmbeddedDocumentList,
TopLevelDocumentMetaclass,
get_document,
)
from mongoengine.base.datastructures import LazyReference
from mongoengine.connection import get_db from mongoengine.connection import get_db
from mongoengine.document import Document, EmbeddedDocument from mongoengine.document import Document, EmbeddedDocument
from mongoengine.fields import ( from mongoengine.fields import DictField, ListField, MapField, ReferenceField
DictField,
ListField,
MapField,
ReferenceField,
)
from mongoengine.queryset import QuerySet from mongoengine.queryset import QuerySet
class DeReference: class DeReference(object):
def __call__(self, items, max_depth=1, instance=None, name=None): def __call__(self, items, max_depth=1, instance=None, name=None):
""" """
Cheaply dereferences the items to a set depth. Cheaply dereferences the items to a set depth.
@ -33,7 +24,7 @@ class DeReference:
:class:`~mongoengine.base.ComplexBaseField` :class:`~mongoengine.base.ComplexBaseField`
:param get: A boolean determining if being called by __get__ :param get: A boolean determining if being called by __get__
""" """
if items is None or isinstance(items, str): if items is None or isinstance(items, six.string_types):
return items return items
# cheapest way to convert a queryset to a list # cheapest way to convert a queryset to a list
@ -44,59 +35,43 @@ class DeReference:
self.max_depth = max_depth self.max_depth = max_depth
doc_type = None doc_type = None
if instance and isinstance( if instance and isinstance(instance, (Document, EmbeddedDocument,
instance, (Document, EmbeddedDocument, TopLevelDocumentMetaclass) TopLevelDocumentMetaclass)):
):
doc_type = instance._fields.get(name) doc_type = instance._fields.get(name)
while hasattr(doc_type, "field"): while hasattr(doc_type, 'field'):
doc_type = doc_type.field doc_type = doc_type.field
if isinstance(doc_type, ReferenceField): if isinstance(doc_type, ReferenceField):
field = doc_type field = doc_type
doc_type = doc_type.document_type doc_type = doc_type.document_type
is_list = not hasattr(items, "items") is_list = not hasattr(items, 'items')
if is_list and all(i.__class__ == doc_type for i in items): if is_list and all([i.__class__ == doc_type for i in items]):
return items return items
elif not is_list and all( elif not is_list and all(
i.__class__ == doc_type for i in items.values() [i.__class__ == doc_type for i in items.values()]):
):
return items return items
elif not field.dbref: elif not field.dbref:
# We must turn the ObjectIds into DBRefs if not hasattr(items, 'items'):
# Recursively dig into the sub items of a list/dict def _get_items(items):
# to turn the ObjectIds into DBRefs new_items = []
def _get_items_from_list(items): for v in items:
new_items = [] if isinstance(v, list):
for v in items: new_items.append(_get_items(v))
value = v elif not isinstance(v, (DBRef, Document)):
if isinstance(v, dict): new_items.append(field.to_python(v))
value = _get_items_from_dict(v) else:
elif isinstance(v, list): new_items.append(v)
value = _get_items_from_list(v) return new_items
elif not isinstance(v, (DBRef, Document)):
value = field.to_python(v)
new_items.append(value)
return new_items
def _get_items_from_dict(items): items = _get_items(items)
new_items = {}
for k, v in items.items():
value = v
if isinstance(v, list):
value = _get_items_from_list(v)
elif isinstance(v, dict):
value = _get_items_from_dict(v)
elif not isinstance(v, (DBRef, Document)):
value = field.to_python(v)
new_items[k] = value
return new_items
if not hasattr(items, "items"):
items = _get_items_from_list(items)
else: else:
items = _get_items_from_dict(items) items = {
k: (v if isinstance(v, (DBRef, Document))
else field.to_python(v))
for k, v in items.iteritems()
}
self.reference_map = self._find_references(items) self.reference_map = self._find_references(items)
self.object_map = self._fetch_objects(doc_type=doc_type) self.object_map = self._fetch_objects(doc_type=doc_type)
@ -123,85 +98,63 @@ class DeReference:
depth += 1 depth += 1
for item in iterator: for item in iterator:
if isinstance(item, (Document, EmbeddedDocument)): if isinstance(item, (Document, EmbeddedDocument)):
for field_name, field in item._fields.items(): for field_name, field in item._fields.iteritems():
v = item._data.get(field_name, None) v = item._data.get(field_name, None)
if isinstance(v, LazyReference): if isinstance(v, DBRef):
# LazyReference inherits DBRef but should not be dereferenced here !
continue
elif isinstance(v, DBRef):
reference_map.setdefault(field.document_type, set()).add(v.id) reference_map.setdefault(field.document_type, set()).add(v.id)
elif isinstance(v, (dict, SON)) and "_ref" in v: elif isinstance(v, (dict, SON)) and '_ref' in v:
reference_map.setdefault(get_document(v["_cls"]), set()).add( reference_map.setdefault(get_document(v['_cls']), set()).add(v['_ref'].id)
v["_ref"].id
)
elif isinstance(v, (dict, list, tuple)) and depth <= self.max_depth: elif isinstance(v, (dict, list, tuple)) and depth <= self.max_depth:
field_cls = getattr( field_cls = getattr(getattr(field, 'field', None), 'document_type', None)
getattr(field, "field", None), "document_type", None
)
references = self._find_references(v, depth) references = self._find_references(v, depth)
for key, refs in references.items(): for key, refs in references.iteritems():
if isinstance( if isinstance(field_cls, (Document, TopLevelDocumentMetaclass)):
field_cls, (Document, TopLevelDocumentMetaclass)
):
key = field_cls key = field_cls
reference_map.setdefault(key, set()).update(refs) reference_map.setdefault(key, set()).update(refs)
elif isinstance(item, LazyReference):
# LazyReference inherits DBRef but should not be dereferenced here !
continue
elif isinstance(item, DBRef): elif isinstance(item, DBRef):
reference_map.setdefault(item.collection, set()).add(item.id) reference_map.setdefault(item.collection, set()).add(item.id)
elif isinstance(item, (dict, SON)) and "_ref" in item: elif isinstance(item, (dict, SON)) and '_ref' in item:
reference_map.setdefault(get_document(item["_cls"]), set()).add( reference_map.setdefault(get_document(item['_cls']), set()).add(item['_ref'].id)
item["_ref"].id
)
elif isinstance(item, (dict, list, tuple)) and depth - 1 <= self.max_depth: elif isinstance(item, (dict, list, tuple)) and depth - 1 <= self.max_depth:
references = self._find_references(item, depth - 1) references = self._find_references(item, depth - 1)
for key, refs in references.items(): for key, refs in references.iteritems():
reference_map.setdefault(key, set()).update(refs) reference_map.setdefault(key, set()).update(refs)
return reference_map return reference_map
def _fetch_objects(self, doc_type=None): def _fetch_objects(self, doc_type=None):
"""Fetch all references and convert to their document objects""" """Fetch all references and convert to their document objects
"""
object_map = {} object_map = {}
for collection, dbrefs in self.reference_map.items(): for collection, dbrefs in self.reference_map.iteritems():
if hasattr(collection, 'objects'): # We have a document class for the refs
# we use getattr instead of hasattr because hasattr swallows any exception under python2
# so it could hide nasty things without raising exceptions (cfr bug #1688))
ref_document_cls_exists = getattr(collection, "objects", None) is not None
if ref_document_cls_exists:
col_name = collection._get_collection_name() col_name = collection._get_collection_name()
refs = [ refs = [dbref for dbref in dbrefs
dbref for dbref in dbrefs if (col_name, dbref) not in object_map if (col_name, dbref) not in object_map]
]
references = collection.objects.in_bulk(refs) references = collection.objects.in_bulk(refs)
for key, doc in references.items(): for key, doc in references.iteritems():
object_map[(col_name, key)] = doc object_map[(col_name, key)] = doc
else: # Generic reference: use the refs data to convert to document else: # Generic reference: use the refs data to convert to document
if isinstance(doc_type, (ListField, DictField, MapField)): if isinstance(doc_type, (ListField, DictField, MapField,)):
continue continue
refs = [ refs = [dbref for dbref in dbrefs
dbref for dbref in dbrefs if (collection, dbref) not in object_map if (collection, dbref) not in object_map]
]
if doc_type: if doc_type:
references = doc_type._get_db()[collection].find( references = doc_type._get_db()[collection].find({'_id': {'$in': refs}})
{"_id": {"$in": refs}}
)
for ref in references: for ref in references:
doc = doc_type._from_son(ref) doc = doc_type._from_son(ref)
object_map[(collection, doc.id)] = doc object_map[(collection, doc.id)] = doc
else: else:
references = get_db()[collection].find({"_id": {"$in": refs}}) references = get_db()[collection].find({'_id': {'$in': refs}})
for ref in references: for ref in references:
if "_cls" in ref: if '_cls' in ref:
doc = get_document(ref["_cls"])._from_son(ref) doc = get_document(ref['_cls'])._from_son(ref)
elif doc_type is None: elif doc_type is None:
doc = get_document( doc = get_document(
"".join(x.capitalize() for x in collection.split("_")) ''.join(x.capitalize()
)._from_son(ref) for x in collection.split('_')))._from_son(ref)
else: else:
doc = doc_type._from_son(ref) doc = doc_type._from_son(ref)
object_map[(collection, doc.id)] = doc object_map[(collection, doc.id)] = doc
@ -229,20 +182,19 @@ class DeReference:
return BaseList(items, instance, name) return BaseList(items, instance, name)
if isinstance(items, (dict, SON)): if isinstance(items, (dict, SON)):
if "_ref" in items: if '_ref' in items:
return self.object_map.get( return self.object_map.get(
(items["_ref"].collection, items["_ref"].id), items (items['_ref'].collection, items['_ref'].id), items)
) elif '_cls' in items:
elif "_cls" in items: doc = get_document(items['_cls'])._from_son(items)
doc = get_document(items["_cls"])._from_son(items) _cls = doc._data.pop('_cls', None)
_cls = doc._data.pop("_cls", None) del items['_cls']
del items["_cls"]
doc._data = self._attach_objects(doc._data, depth, doc, None) doc._data = self._attach_objects(doc._data, depth, doc, None)
if _cls is not None: if _cls is not None:
doc._data["_cls"] = _cls doc._data['_cls'] = _cls
return doc return doc
if not hasattr(items, "items"): if not hasattr(items, 'items'):
is_list = True is_list = True
list_type = BaseList list_type = BaseList
if isinstance(items, EmbeddedDocumentList): if isinstance(items, EmbeddedDocumentList):
@ -250,9 +202,13 @@ class DeReference:
as_tuple = isinstance(items, tuple) as_tuple = isinstance(items, tuple)
iterator = enumerate(items) iterator = enumerate(items)
data = [] data = []
elif isinstance(items, OrderedDict):
is_list = False
iterator = items.iteritems()
data = OrderedDict()
else: else:
is_list = False is_list = False
iterator = items.items() iterator = items.iteritems()
data = {} data = {}
depth += 1 depth += 1
@ -269,23 +225,17 @@ class DeReference:
v = data[k]._data.get(field_name, None) v = data[k]._data.get(field_name, None)
if isinstance(v, DBRef): if isinstance(v, DBRef):
data[k]._data[field_name] = self.object_map.get( data[k]._data[field_name] = self.object_map.get(
(v.collection, v.id), v (v.collection, v.id), v)
) elif isinstance(v, (dict, SON)) and '_ref' in v:
elif isinstance(v, (dict, SON)) and "_ref" in v:
data[k]._data[field_name] = self.object_map.get( data[k]._data[field_name] = self.object_map.get(
(v["_ref"].collection, v["_ref"].id), v (v['_ref'].collection, v['_ref'].id), v)
)
elif isinstance(v, (dict, list, tuple)) and depth <= self.max_depth: elif isinstance(v, (dict, list, tuple)) and depth <= self.max_depth:
item_name = f"{name}.{k}.{field_name}" item_name = six.text_type('{0}.{1}.{2}').format(name, k, field_name)
data[k]._data[field_name] = self._attach_objects( data[k]._data[field_name] = self._attach_objects(v, depth, instance=instance, name=item_name)
v, depth, instance=instance, name=item_name
)
elif isinstance(v, (dict, list, tuple)) and depth <= self.max_depth: elif isinstance(v, (dict, list, tuple)) and depth <= self.max_depth:
item_name = f"{name}.{k}" if name else name item_name = '%s.%s' % (name, k) if name else name
data[k] = self._attach_objects( data[k] = self._attach_objects(v, depth - 1, instance=instance, name=item_name)
v, depth - 1, instance=instance, name=item_name elif hasattr(v, 'id'):
)
elif isinstance(v, DBRef) and hasattr(v, "id"):
data[k] = self.object_map.get((v.collection, v.id), v) data[k] = self.object_map.get((v.collection, v.id), v)
if instance and name: if instance and name:

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View File

@ -1,31 +1,18 @@
from collections import defaultdict from collections import defaultdict
__all__ = ( import six
"NotRegistered",
"InvalidDocumentError", __all__ = ('NotRegistered', 'InvalidDocumentError', 'LookUpError',
"LookUpError", 'DoesNotExist', 'MultipleObjectsReturned', 'InvalidQueryError',
"DoesNotExist", 'OperationError', 'NotUniqueError', 'FieldDoesNotExist',
"MultipleObjectsReturned", 'ValidationError', 'SaveConditionError')
"InvalidQueryError",
"OperationError",
"NotUniqueError",
"BulkWriteError",
"FieldDoesNotExist",
"ValidationError",
"SaveConditionError",
"DeprecatedError",
)
class MongoEngineException(Exception): class NotRegistered(Exception):
pass pass
class NotRegistered(MongoEngineException): class InvalidDocumentError(Exception):
pass
class InvalidDocumentError(MongoEngineException):
pass pass
@ -33,19 +20,19 @@ class LookUpError(AttributeError):
pass pass
class DoesNotExist(MongoEngineException): class DoesNotExist(Exception):
pass pass
class MultipleObjectsReturned(MongoEngineException): class MultipleObjectsReturned(Exception):
pass pass
class InvalidQueryError(MongoEngineException): class InvalidQueryError(Exception):
pass pass
class OperationError(MongoEngineException): class OperationError(Exception):
pass pass
@ -53,15 +40,11 @@ class NotUniqueError(OperationError):
pass pass
class BulkWriteError(OperationError):
pass
class SaveConditionError(OperationError): class SaveConditionError(OperationError):
pass pass
class FieldDoesNotExist(MongoEngineException): class FieldDoesNotExist(Exception):
"""Raised when trying to set a field """Raised when trying to set a field
not declared in a :class:`~mongoengine.Document` not declared in a :class:`~mongoengine.Document`
or an :class:`~mongoengine.EmbeddedDocument`. or an :class:`~mongoengine.EmbeddedDocument`.
@ -87,25 +70,24 @@ class ValidationError(AssertionError):
field_name = None field_name = None
_message = None _message = None
def __init__(self, message="", **kwargs): def __init__(self, message='', **kwargs):
super().__init__(message) self.errors = kwargs.get('errors', {})
self.errors = kwargs.get("errors", {}) self.field_name = kwargs.get('field_name')
self.field_name = kwargs.get("field_name")
self.message = message self.message = message
def __str__(self): def __str__(self):
return str(self.message) return six.text_type(self.message)
def __repr__(self): def __repr__(self):
return f"{self.__class__.__name__}({self.message},)" return '%s(%s,)' % (self.__class__.__name__, self.message)
def __getattribute__(self, name): def __getattribute__(self, name):
message = super().__getattribute__(name) message = super(ValidationError, self).__getattribute__(name)
if name == "message": if name == 'message':
if self.field_name: if self.field_name:
message = "%s" % message message = '%s' % message
if self.errors: if self.errors:
message = f"{message}({self._format_errors()})" message = '%s(%s)' % (message, self._format_errors())
return message return message
def _get_message(self): def _get_message(self):
@ -126,13 +108,16 @@ class ValidationError(AssertionError):
def build_dict(source): def build_dict(source):
errors_dict = {} errors_dict = {}
if not source:
return errors_dict
if isinstance(source, dict): if isinstance(source, dict):
for field_name, error in source.items(): for field_name, error in source.iteritems():
errors_dict[field_name] = build_dict(error) errors_dict[field_name] = build_dict(error)
elif isinstance(source, ValidationError) and source.errors: elif isinstance(source, ValidationError) and source.errors:
return build_dict(source.errors) return build_dict(source.errors)
else: else:
return str(source) return six.text_type(source)
return errors_dict return errors_dict
@ -144,22 +129,17 @@ class ValidationError(AssertionError):
def _format_errors(self): def _format_errors(self):
"""Returns a string listing all errors within a document""" """Returns a string listing all errors within a document"""
def generate_key(value, prefix=""): def generate_key(value, prefix=''):
if isinstance(value, list): if isinstance(value, list):
value = " ".join([generate_key(k) for k in value]) value = ' '.join([generate_key(k) for k in value])
elif isinstance(value, dict): elif isinstance(value, dict):
value = " ".join([generate_key(v, k) for k, v in value.items()]) value = ' '.join(
[generate_key(v, k) for k, v in value.iteritems()])
results = f"{prefix}.{value}" if prefix else value results = '%s.%s' % (prefix, value) if prefix else value
return results return results
error_dict = defaultdict(list) error_dict = defaultdict(list)
for k, v in self.to_dict().items(): for k, v in self.to_dict().iteritems():
error_dict[generate_key(v)].append(k) error_dict[generate_key(v)].append(k)
return " ".join([f"{k}: {v}" for k, v in error_dict.items()]) return ' '.join(['%s: %s' % (k, v) for k, v in error_dict.iteritems()])
class DeprecatedError(MongoEngineException):
"""Raise when a user uses a feature that has been Deprecated"""
pass

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@ -1,20 +0,0 @@
"""
Helper functions, constants, and types to aid with MongoDB version support
"""
from mongoengine.connection import get_connection
# Constant that can be used to compare the version retrieved with
# get_mongodb_version()
MONGODB_34 = (3, 4)
MONGODB_36 = (3, 6)
MONGODB_42 = (4, 2)
MONGODB_44 = (4, 4)
def get_mongodb_version():
"""Return the version of the default connected mongoDB (first 2 digits)
:return: tuple(int, int)
"""
version_list = get_connection().server_info()["versionArray"][:2] # e.g: (3, 2)
return tuple(version_list)

View File

@ -1,60 +0,0 @@
"""
Helper functions, constants, and types to aid with PyMongo v2.7 - v3.x support.
"""
import pymongo
from pymongo.errors import OperationFailure
_PYMONGO_37 = (3, 7)
PYMONGO_VERSION = tuple(pymongo.version_tuple[:2])
IS_PYMONGO_GTE_37 = PYMONGO_VERSION >= _PYMONGO_37
def count_documents(
collection, filter, skip=None, limit=None, hint=None, collation=None
):
"""Pymongo>3.7 deprecates count in favour of count_documents"""
if limit == 0:
return 0 # Pymongo raises an OperationFailure if called with limit=0
kwargs = {}
if skip is not None:
kwargs["skip"] = skip
if limit is not None:
kwargs["limit"] = limit
if hint not in (-1, None):
kwargs["hint"] = hint
if collation is not None:
kwargs["collation"] = collation
# count_documents appeared in pymongo 3.7
if IS_PYMONGO_GTE_37:
try:
return collection.count_documents(filter=filter, **kwargs)
except OperationFailure:
# OperationFailure - accounts for some operators that used to work
# with .count but are no longer working with count_documents (i.e $geoNear, $near, and $nearSphere)
# fallback to deprecated Cursor.count
# Keeping this should be reevaluated the day pymongo removes .count entirely
pass
cursor = collection.find(filter)
for option, option_value in kwargs.items():
cursor_method = getattr(cursor, option)
cursor = cursor_method(option_value)
with_limit_and_skip = "skip" in kwargs or "limit" in kwargs
return cursor.count(with_limit_and_skip=with_limit_and_skip)
def list_collection_names(db, include_system_collections=False):
"""Pymongo>3.7 deprecates collection_names in favour of list_collection_names"""
if IS_PYMONGO_GTE_37:
collections = db.list_collection_names()
else:
collections = db.collection_names()
if not include_system_collections:
collections = [c for c in collections if not c.startswith("system.")]
return collections

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@ -0,0 +1,25 @@
"""
Helper functions, constants, and types to aid with Python v2.7 - v3.x and
PyMongo v2.7 - v3.x support.
"""
import pymongo
import six
if pymongo.version_tuple[0] < 3:
IS_PYMONGO_3 = False
else:
IS_PYMONGO_3 = True
# six.BytesIO resolves to StringIO.StringIO in Py2 and io.BytesIO in Py3.
StringIO = six.BytesIO
# Additionally for Py2, try to use the faster cStringIO, if available
if not six.PY3:
try:
import cStringIO
except ImportError:
pass
else:
StringIO = cStringIO.StringIO

View File

@ -7,22 +7,11 @@ from mongoengine.queryset.visitor import *
# Expose just the public subset of all imported objects and constants. # Expose just the public subset of all imported objects and constants.
__all__ = ( __all__ = (
"QuerySet", 'QuerySet', 'QuerySetNoCache', 'Q', 'queryset_manager', 'QuerySetManager',
"QuerySetNoCache", 'QueryFieldList', 'DO_NOTHING', 'NULLIFY', 'CASCADE', 'DENY', 'PULL',
"Q",
"queryset_manager",
"QuerySetManager",
"QueryFieldList",
"DO_NOTHING",
"NULLIFY",
"CASCADE",
"DENY",
"PULL",
# Errors that might be related to a queryset, mostly here for backward # Errors that might be related to a queryset, mostly here for backward
# compatibility # compatibility
"DoesNotExist", 'DoesNotExist', 'InvalidQueryError', 'MultipleObjectsReturned',
"InvalidQueryError", 'NotUniqueError', 'OperationError',
"MultipleObjectsReturned",
"NotUniqueError",
"OperationError",
) )

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@ -1,15 +1,12 @@
__all__ = ("QueryFieldList",) __all__ = ('QueryFieldList',)
class QueryFieldList: class QueryFieldList(object):
"""Object that handles combinations of .only() and .exclude() calls""" """Object that handles combinations of .only() and .exclude() calls"""
ONLY = 1 ONLY = 1
EXCLUDE = 0 EXCLUDE = 0
def __init__( def __init__(self, fields=None, value=ONLY, always_include=None, _only_called=False):
self, fields=None, value=ONLY, always_include=None, _only_called=False
):
"""The QueryFieldList builder """The QueryFieldList builder
:param fields: A list of fields used in `.only()` or `.exclude()` :param fields: A list of fields used in `.only()` or `.exclude()`
@ -52,7 +49,7 @@ class QueryFieldList:
self.fields = f.fields - self.fields self.fields = f.fields - self.fields
self._clean_slice() self._clean_slice()
if "_id" in f.fields: if '_id' in f.fields:
self._id = f.value self._id = f.value
if self.always_include: if self.always_include:
@ -62,11 +59,11 @@ class QueryFieldList:
else: else:
self.fields -= self.always_include self.fields -= self.always_include
if getattr(f, "_only_called", False): if getattr(f, '_only_called', False):
self._only_called = True self._only_called = True
return self return self
def __bool__(self): def __nonzero__(self):
return bool(self.fields) return bool(self.fields)
def as_dict(self): def as_dict(self):
@ -74,11 +71,11 @@ class QueryFieldList:
if self.slice: if self.slice:
field_list.update(self.slice) field_list.update(self.slice)
if self._id is not None: if self._id is not None:
field_list["_id"] = self._id field_list['_id'] = self._id
return field_list return field_list
def reset(self): def reset(self):
self.fields = set() self.fields = set([])
self.slice = {} self.slice = {}
self.value = self.ONLY self.value = self.ONLY

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@ -1,11 +1,10 @@
from functools import partial from functools import partial
from mongoengine.queryset.queryset import QuerySet from mongoengine.queryset.queryset import QuerySet
__all__ = ("queryset_manager", "QuerySetManager") __all__ = ('queryset_manager', 'QuerySetManager')
class QuerySetManager: class QuerySetManager(object):
""" """
The default QuerySet Manager. The default QuerySet Manager.
@ -34,10 +33,10 @@ class QuerySetManager:
return self return self
# owner is the document that contains the QuerySetManager # owner is the document that contains the QuerySetManager
queryset_class = owner._meta.get("queryset_class", self.default) queryset_class = owner._meta.get('queryset_class', self.default)
queryset = queryset_class(owner, owner._get_collection()) queryset = queryset_class(owner, owner._get_collection())
if self.get_queryset: if self.get_queryset:
arg_count = self.get_queryset.__code__.co_argcount arg_count = self.get_queryset.func_code.co_argcount
if arg_count == 1: if arg_count == 1:
queryset = self.get_queryset(queryset) queryset = self.get_queryset(queryset)
elif arg_count == 2: elif arg_count == 2:

View File

@ -1,22 +1,9 @@
from mongoengine.errors import OperationError from mongoengine.errors import OperationError
from mongoengine.queryset.base import ( from mongoengine.queryset.base import (BaseQuerySet, CASCADE, DENY, DO_NOTHING,
CASCADE, NULLIFY, PULL)
DENY,
DO_NOTHING,
NULLIFY,
PULL,
BaseQuerySet,
)
__all__ = ( __all__ = ('QuerySet', 'QuerySetNoCache', 'DO_NOTHING', 'NULLIFY', 'CASCADE',
"QuerySet", 'DENY', 'PULL')
"QuerySetNoCache",
"DO_NOTHING",
"NULLIFY",
"CASCADE",
"DENY",
"PULL",
)
# The maximum number of items to display in a QuerySet.__repr__ # The maximum number of items to display in a QuerySet.__repr__
REPR_OUTPUT_SIZE = 20 REPR_OUTPUT_SIZE = 20
@ -68,12 +55,12 @@ class QuerySet(BaseQuerySet):
def __repr__(self): def __repr__(self):
"""Provide a string representation of the QuerySet""" """Provide a string representation of the QuerySet"""
if self._iter: if self._iter:
return ".. queryset mid-iteration .." return '.. queryset mid-iteration ..'
self._populate_cache() self._populate_cache()
data = self._result_cache[: REPR_OUTPUT_SIZE + 1] data = self._result_cache[:REPR_OUTPUT_SIZE + 1]
if len(data) > REPR_OUTPUT_SIZE: if len(data) > REPR_OUTPUT_SIZE:
data[-1] = "...(remaining elements truncated)..." data[-1] = '...(remaining elements truncated)...'
return repr(data) return repr(data)
def _iter_results(self): def _iter_results(self):
@ -100,10 +87,10 @@ class QuerySet(BaseQuerySet):
yield self._result_cache[pos] yield self._result_cache[pos]
pos += 1 pos += 1
# return if we already established there were no more # Raise StopIteration if we already established there were no more
# docs in the db cursor. # docs in the db cursor.
if not self._has_more: if not self._has_more:
return raise StopIteration
# Otherwise, populate more of the cache and repeat. # Otherwise, populate more of the cache and repeat.
if len(self._result_cache) <= pos: if len(self._result_cache) <= pos:
@ -125,8 +112,8 @@ class QuerySet(BaseQuerySet):
# Pull in ITER_CHUNK_SIZE docs from the database and store them in # Pull in ITER_CHUNK_SIZE docs from the database and store them in
# the result cache. # the result cache.
try: try:
for _ in range(ITER_CHUNK_SIZE): for _ in xrange(ITER_CHUNK_SIZE):
self._result_cache.append(next(self)) self._result_cache.append(self.next())
except StopIteration: except StopIteration:
# Getting this exception means there are no more docs in the # Getting this exception means there are no more docs in the
# db cursor. Set _has_more to False so that we can use that # db cursor. Set _has_more to False so that we can use that
@ -141,43 +128,52 @@ class QuerySet(BaseQuerySet):
getting the count getting the count
""" """
if with_limit_and_skip is False: if with_limit_and_skip is False:
return super().count(with_limit_and_skip) return super(QuerySet, self).count(with_limit_and_skip)
if self._len is None: if self._len is None:
# cache the length self._len = super(QuerySet, self).count(with_limit_and_skip)
self._len = super().count(with_limit_and_skip)
return self._len return self._len
def no_cache(self): def no_cache(self):
"""Convert to a non-caching queryset""" """Convert to a non-caching queryset
if self._result_cache is not None:
raise OperationError("QuerySet already cached")
return self._clone_into(QuerySetNoCache(self._document, self._collection)) .. versionadded:: 0.8.3 Convert to non caching queryset
"""
if self._result_cache is not None:
raise OperationError('QuerySet already cached')
return self._clone_into(QuerySetNoCache(self._document,
self._collection))
class QuerySetNoCache(BaseQuerySet): class QuerySetNoCache(BaseQuerySet):
"""A non caching QuerySet""" """A non caching QuerySet"""
def cache(self): def cache(self):
"""Convert to a caching queryset""" """Convert to a caching queryset
.. versionadded:: 0.8.3 Convert to caching queryset
"""
return self._clone_into(QuerySet(self._document, self._collection)) return self._clone_into(QuerySet(self._document, self._collection))
def __repr__(self): def __repr__(self):
"""Provides the string representation of the QuerySet""" """Provides the string representation of the QuerySet
.. versionchanged:: 0.6.13 Now doesnt modify the cursor
"""
if self._iter: if self._iter:
return ".. queryset mid-iteration .." return '.. queryset mid-iteration ..'
data = [] data = []
for _ in range(REPR_OUTPUT_SIZE + 1): for _ in xrange(REPR_OUTPUT_SIZE + 1):
try: try:
data.append(next(self)) data.append(self.next())
except StopIteration: except StopIteration:
break break
if len(data) > REPR_OUTPUT_SIZE: if len(data) > REPR_OUTPUT_SIZE:
data[-1] = "...(remaining elements truncated)..." data[-1] = '...(remaining elements truncated)...'
self.rewind() self.rewind()
return repr(data) return repr(data)
@ -188,3 +184,10 @@ class QuerySetNoCache(BaseQuerySet):
queryset = self.clone() queryset = self.clone()
queryset.rewind() queryset.rewind()
return queryset return queryset
class QuerySetNoDeRef(QuerySet):
"""Special no_dereference QuerySet"""
def __dereference(items, max_depth=1, instance=None, name=None):
return items

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@ -1,65 +1,31 @@
from collections import defaultdict from collections import defaultdict
import pymongo from bson import ObjectId, SON
from bson import SON, ObjectId
from bson.dbref import DBRef from bson.dbref import DBRef
import pymongo
import six
from mongoengine.base import UPDATE_OPERATORS from mongoengine.base import UPDATE_OPERATORS
from mongoengine.common import _import_class from mongoengine.common import _import_class
from mongoengine.connection import get_connection
from mongoengine.errors import InvalidQueryError from mongoengine.errors import InvalidQueryError
from mongoengine.python_support import IS_PYMONGO_3
__all__ = ("query", "update", "STRING_OPERATORS") __all__ = ('query', 'update')
COMPARISON_OPERATORS = ( COMPARISON_OPERATORS = ('ne', 'gt', 'gte', 'lt', 'lte', 'in', 'nin', 'mod',
"ne", 'all', 'size', 'exists', 'not', 'elemMatch', 'type')
"gt", GEO_OPERATORS = ('within_distance', 'within_spherical_distance',
"gte", 'within_box', 'within_polygon', 'near', 'near_sphere',
"lt", 'max_distance', 'min_distance', 'geo_within', 'geo_within_box',
"lte", 'geo_within_polygon', 'geo_within_center',
"in", 'geo_within_sphere', 'geo_intersects')
"nin", STRING_OPERATORS = ('contains', 'icontains', 'startswith',
"mod", 'istartswith', 'endswith', 'iendswith',
"all", 'exact', 'iexact')
"size", CUSTOM_OPERATORS = ('match',)
"exists", MATCH_OPERATORS = (COMPARISON_OPERATORS + GEO_OPERATORS +
"not", STRING_OPERATORS + CUSTOM_OPERATORS)
"elemMatch",
"type",
)
GEO_OPERATORS = (
"within_distance",
"within_spherical_distance",
"within_box",
"within_polygon",
"near",
"near_sphere",
"max_distance",
"min_distance",
"geo_within",
"geo_within_box",
"geo_within_polygon",
"geo_within_center",
"geo_within_sphere",
"geo_intersects",
)
STRING_OPERATORS = (
"contains",
"icontains",
"startswith",
"istartswith",
"endswith",
"iendswith",
"exact",
"iexact",
"regex",
"iregex",
"wholeword",
"iwholeword",
)
CUSTOM_OPERATORS = ("match",)
MATCH_OPERATORS = (
COMPARISON_OPERATORS + GEO_OPERATORS + STRING_OPERATORS + CUSTOM_OPERATORS
)
# TODO make this less complex # TODO make this less complex
@ -68,11 +34,11 @@ def query(_doc_cls=None, **kwargs):
mongo_query = {} mongo_query = {}
merge_query = defaultdict(list) merge_query = defaultdict(list)
for key, value in sorted(kwargs.items()): for key, value in sorted(kwargs.items()):
if key == "__raw__": if key == '__raw__':
mongo_query.update(value) mongo_query.update(value)
continue continue
parts = key.rsplit("__") parts = key.rsplit('__')
indices = [(i, p) for i, p in enumerate(parts) if p.isdigit()] indices = [(i, p) for i, p in enumerate(parts) if p.isdigit()]
parts = [part for part in parts if not part.isdigit()] parts = [part for part in parts if not part.isdigit()]
# Check for an operator and transform to mongo-style if there is # Check for an operator and transform to mongo-style if there is
@ -81,11 +47,11 @@ def query(_doc_cls=None, **kwargs):
op = parts.pop() op = parts.pop()
# Allow to escape operator-like field name by __ # Allow to escape operator-like field name by __
if len(parts) > 1 and parts[-1] == "": if len(parts) > 1 and parts[-1] == '':
parts.pop() parts.pop()
negate = False negate = False
if len(parts) > 1 and parts[-1] == "not": if len(parts) > 1 and parts[-1] == 'not':
parts.pop() parts.pop()
negate = True negate = True
@ -97,18 +63,18 @@ def query(_doc_cls=None, **kwargs):
raise InvalidQueryError(e) raise InvalidQueryError(e)
parts = [] parts = []
CachedReferenceField = _import_class("CachedReferenceField") CachedReferenceField = _import_class('CachedReferenceField')
GenericReferenceField = _import_class("GenericReferenceField") GenericReferenceField = _import_class('GenericReferenceField')
cleaned_fields = [] cleaned_fields = []
for field in fields: for field in fields:
append_field = True append_field = True
if isinstance(field, str): if isinstance(field, six.string_types):
parts.append(field) parts.append(field)
append_field = False append_field = False
# is last and CachedReferenceField # is last and CachedReferenceField
elif isinstance(field, CachedReferenceField) and fields[-1] == field: elif isinstance(field, CachedReferenceField) and fields[-1] == field:
parts.append("%s._id" % field.db_field) parts.append('%s._id' % field.db_field)
else: else:
parts.append(field.db_field) parts.append(field.db_field)
@ -118,17 +84,38 @@ def query(_doc_cls=None, **kwargs):
# Convert value to proper value # Convert value to proper value
field = cleaned_fields[-1] field = cleaned_fields[-1]
singular_ops = [None, "ne", "gt", "gte", "lt", "lte", "not"] singular_ops = [None, 'ne', 'gt', 'gte', 'lt', 'lte', 'not']
singular_ops += STRING_OPERATORS singular_ops += STRING_OPERATORS
if op in singular_ops: if op in singular_ops:
value = field.prepare_query_value(op, value) if isinstance(field, six.string_types):
if (op in STRING_OPERATORS and
isinstance(value, six.string_types)):
StringField = _import_class('StringField')
value = StringField.prepare_query_value(op, value)
else:
value = field
else:
value = field.prepare_query_value(op, value)
if isinstance(field, CachedReferenceField) and value: if isinstance(field, CachedReferenceField) and value:
value = value["_id"] value = value['_id']
elif op in ("in", "nin", "all", "near") and not isinstance(value, dict): elif op in ('in', 'nin', 'all', 'near') and not isinstance(value, dict):
# Raise an error if the in/nin/all/near param is not iterable. # Raise an error if the in/nin/all/near param is not iterable. We need a
value = _prepare_query_for_iterable(field, op, value) # special check for BaseDocument, because - although it's iterable - using
# it as such in the context of this method is most definitely a mistake.
BaseDocument = _import_class('BaseDocument')
if isinstance(value, BaseDocument):
raise TypeError("When using the `in`, `nin`, `all`, or "
"`near`-operators you can\'t use a "
"`Document`, you must wrap your object "
"in a list (object -> [object]).")
elif not hasattr(value, '__iter__'):
raise TypeError("The `in`, `nin`, `all`, or "
"`near`-operators must be applied to an "
"iterable (e.g. a list).")
else:
value = [field.prepare_query_value(op, v) for v in value]
# If we're querying a GenericReferenceField, we need to alter the # If we're querying a GenericReferenceField, we need to alter the
# key depending on the value: # key depending on the value:
@ -136,77 +123,73 @@ def query(_doc_cls=None, **kwargs):
# * If the value is an ObjectId, the key should be "field_name._ref.$id". # * If the value is an ObjectId, the key should be "field_name._ref.$id".
if isinstance(field, GenericReferenceField): if isinstance(field, GenericReferenceField):
if isinstance(value, DBRef): if isinstance(value, DBRef):
parts[-1] += "._ref" parts[-1] += '._ref'
elif isinstance(value, ObjectId): elif isinstance(value, ObjectId):
parts[-1] += "._ref.$id" parts[-1] += '._ref.$id'
# if op and op not in COMPARISON_OPERATORS: # if op and op not in COMPARISON_OPERATORS:
if op: if op:
if op in GEO_OPERATORS: if op in GEO_OPERATORS:
value = _geo_operator(field, op, value) value = _geo_operator(field, op, value)
elif op in ("match", "elemMatch"): elif op in ('match', 'elemMatch'):
ListField = _import_class("ListField") ListField = _import_class('ListField')
EmbeddedDocumentField = _import_class("EmbeddedDocumentField") EmbeddedDocumentField = _import_class('EmbeddedDocumentField')
if ( if (
isinstance(value, dict) isinstance(value, dict) and
and isinstance(field, ListField) isinstance(field, ListField) and
and isinstance(field.field, EmbeddedDocumentField) isinstance(field.field, EmbeddedDocumentField)
): ):
value = query(field.field.document_type, **value) value = query(field.field.document_type, **value)
else: else:
value = field.prepare_query_value(op, value) value = field.prepare_query_value(op, value)
value = {"$elemMatch": value} value = {'$elemMatch': value}
elif op in CUSTOM_OPERATORS: elif op in CUSTOM_OPERATORS:
NotImplementedError( NotImplementedError('Custom method "%s" has not '
'Custom method "%s" has not ' "been implemented" % op 'been implemented' % op)
)
elif op not in STRING_OPERATORS: elif op not in STRING_OPERATORS:
value = {"$" + op: value} value = {'$' + op: value}
if negate: if negate:
value = {"$not": value} value = {'$not': value}
for i, part in indices: for i, part in indices:
parts.insert(i, part) parts.insert(i, part)
key = ".".join(parts) key = '.'.join(parts)
if key not in mongo_query: if op is None or key not in mongo_query:
mongo_query[key] = value mongo_query[key] = value
else: elif key in mongo_query:
if isinstance(mongo_query[key], dict) and isinstance(value, dict): if isinstance(mongo_query[key], dict):
mongo_query[key].update(value) mongo_query[key].update(value)
# $max/minDistance needs to come last - convert to SON # $max/minDistance needs to come last - convert to SON
value_dict = mongo_query[key] value_dict = mongo_query[key]
if ("$maxDistance" in value_dict or "$minDistance" in value_dict) and ( if ('$maxDistance' in value_dict or '$minDistance' in value_dict) and \
"$near" in value_dict or "$nearSphere" in value_dict ('$near' in value_dict or '$nearSphere' in value_dict):
):
value_son = SON() value_son = SON()
for k, v in value_dict.items(): for k, v in value_dict.iteritems():
if k == "$maxDistance" or k == "$minDistance": if k == '$maxDistance' or k == '$minDistance':
continue continue
value_son[k] = v value_son[k] = v
# Required for MongoDB >= 2.6, may fail when combining # Required for MongoDB >= 2.6, may fail when combining
# PyMongo 3+ and MongoDB < 2.6 # PyMongo 3+ and MongoDB < 2.6
near_embedded = False near_embedded = False
for near_op in ("$near", "$nearSphere"): for near_op in ('$near', '$nearSphere'):
if isinstance(value_dict.get(near_op), dict): if isinstance(value_dict.get(near_op), dict) and (
IS_PYMONGO_3 or get_connection().max_wire_version > 1):
value_son[near_op] = SON(value_son[near_op]) value_son[near_op] = SON(value_son[near_op])
if "$maxDistance" in value_dict: if '$maxDistance' in value_dict:
value_son[near_op]["$maxDistance"] = value_dict[ value_son[near_op][
"$maxDistance" '$maxDistance'] = value_dict['$maxDistance']
] if '$minDistance' in value_dict:
if "$minDistance" in value_dict: value_son[near_op][
value_son[near_op]["$minDistance"] = value_dict[ '$minDistance'] = value_dict['$minDistance']
"$minDistance"
]
near_embedded = True near_embedded = True
if not near_embedded: if not near_embedded:
if "$maxDistance" in value_dict: if '$maxDistance' in value_dict:
value_son["$maxDistance"] = value_dict["$maxDistance"] value_son['$maxDistance'] = value_dict['$maxDistance']
if "$minDistance" in value_dict: if '$minDistance' in value_dict:
value_son["$minDistance"] = value_dict["$minDistance"] value_son['$minDistance'] = value_dict['$minDistance']
mongo_query[key] = value_son mongo_query[key] = value_son
else: else:
# Store for manually merging later # Store for manually merging later
@ -218,10 +201,10 @@ def query(_doc_cls=None, **kwargs):
del mongo_query[k] del mongo_query[k]
if isinstance(v, list): if isinstance(v, list):
value = [{k: val} for val in v] value = [{k: val} for val in v]
if "$and" in mongo_query.keys(): if '$and' in mongo_query.keys():
mongo_query["$and"].extend(value) mongo_query['$and'].extend(value)
else: else:
mongo_query["$and"] = value mongo_query['$and'] = value
return mongo_query return mongo_query
@ -231,44 +214,37 @@ def update(_doc_cls=None, **update):
format. format.
""" """
mongo_update = {} mongo_update = {}
for key, value in update.items(): for key, value in update.items():
if key == "__raw__": if key == '__raw__':
mongo_update.update(value) mongo_update.update(value)
continue continue
parts = key.split('__')
parts = key.split("__")
# if there is no operator, default to 'set' # if there is no operator, default to 'set'
if len(parts) < 3 and parts[0] not in UPDATE_OPERATORS: if len(parts) < 3 and parts[0] not in UPDATE_OPERATORS:
parts.insert(0, "set") parts.insert(0, 'set')
# Check for an operator and transform to mongo-style if there is # Check for an operator and transform to mongo-style if there is
op = None op = None
if parts[0] in UPDATE_OPERATORS: if parts[0] in UPDATE_OPERATORS:
op = parts.pop(0) op = parts.pop(0)
# Convert Pythonic names to Mongo equivalents # Convert Pythonic names to Mongo equivalents
operator_map = { if op in ('push_all', 'pull_all'):
"push_all": "pushAll", op = op.replace('_all', 'All')
"pull_all": "pullAll", elif op == 'dec':
"dec": "inc",
"add_to_set": "addToSet",
"set_on_insert": "setOnInsert",
}
if op == "dec":
# Support decrement by flipping a positive value's sign # Support decrement by flipping a positive value's sign
# and using 'inc' # and using 'inc'
op = 'inc'
value = -value value = -value
# If the operator doesn't found from operator map, the op value elif op == 'add_to_set':
# will stay unchanged op = 'addToSet'
op = operator_map.get(op, op) elif op == 'set_on_insert':
op = 'setOnInsert'
match = None match = None
if parts[-1] in COMPARISON_OPERATORS: if parts[-1] in COMPARISON_OPERATORS:
match = parts.pop() match = parts.pop()
# Allow to escape operator-like field name by __ # Allow to escape operator-like field name by __
if len(parts) > 1 and parts[-1] == "": if len(parts) > 1 and parts[-1] == '':
parts.pop() parts.pop()
if _doc_cls: if _doc_cls:
@ -283,10 +259,10 @@ def update(_doc_cls=None, **update):
appended_sub_field = False appended_sub_field = False
for field in fields: for field in fields:
append_field = True append_field = True
if isinstance(field, str): if isinstance(field, six.string_types):
# Convert the S operator to $ # Convert the S operator to $
if field == "S": if field == 'S':
field = "$" field = '$'
parts.append(field) parts.append(field)
append_field = False append_field = False
else: else:
@ -294,7 +270,7 @@ def update(_doc_cls=None, **update):
if append_field: if append_field:
appended_sub_field = False appended_sub_field = False
cleaned_fields.append(field) cleaned_fields.append(field)
if hasattr(field, "field"): if hasattr(field, 'field'):
cleaned_fields.append(field.field) cleaned_fields.append(field.field)
appended_sub_field = True appended_sub_field = True
@ -304,91 +280,63 @@ def update(_doc_cls=None, **update):
else: else:
field = cleaned_fields[-1] field = cleaned_fields[-1]
GeoJsonBaseField = _import_class("GeoJsonBaseField") GeoJsonBaseField = _import_class('GeoJsonBaseField')
if isinstance(field, GeoJsonBaseField): if isinstance(field, GeoJsonBaseField):
value = field.to_mongo(value) value = field.to_mongo(value)
if op == "pull": if op in (None, 'set', 'push', 'pull'):
if field.required or value is not None:
if match in ("in", "nin") and not isinstance(value, dict):
value = _prepare_query_for_iterable(field, op, value)
else:
value = field.prepare_query_value(op, value)
elif op == "push" and isinstance(value, (list, tuple, set)):
value = [field.prepare_query_value(op, v) for v in value]
elif op in (None, "set", "push"):
if field.required or value is not None: if field.required or value is not None:
value = field.prepare_query_value(op, value) value = field.prepare_query_value(op, value)
elif op in ("pushAll", "pullAll"): elif op in ('pushAll', 'pullAll'):
value = [field.prepare_query_value(op, v) for v in value] value = [field.prepare_query_value(op, v) for v in value]
elif op in ("addToSet", "setOnInsert"): elif op in ('addToSet', 'setOnInsert'):
if isinstance(value, (list, tuple, set)): if isinstance(value, (list, tuple, set)):
value = [field.prepare_query_value(op, v) for v in value] value = [field.prepare_query_value(op, v) for v in value]
elif field.required or value is not None: elif field.required or value is not None:
value = field.prepare_query_value(op, value) value = field.prepare_query_value(op, value)
elif op == "unset": elif op == 'unset':
value = 1 value = 1
elif op == "inc":
value = field.prepare_query_value(op, value)
if match: if match:
match = "$" + match match = '$' + match
value = {match: value} value = {match: value}
key = ".".join(parts) key = '.'.join(parts)
if "pull" in op and "." in key: if not op:
raise InvalidQueryError('Updates must supply an operation '
'eg: set__FIELD=value')
if 'pull' in op and '.' in key:
# Dot operators don't work on pull operations # Dot operators don't work on pull operations
# unless they point to a list field # unless they point to a list field
# Otherwise it uses nested dict syntax # Otherwise it uses nested dict syntax
if op == "pullAll": if op == 'pullAll':
raise InvalidQueryError( raise InvalidQueryError('pullAll operations only support '
"pullAll operations only support a single field depth" 'a single field depth')
)
# Look for the last list field and use dot notation until there # Look for the last list field and use dot notation until there
field_classes = [c.__class__ for c in cleaned_fields] field_classes = [c.__class__ for c in cleaned_fields]
field_classes.reverse() field_classes.reverse()
ListField = _import_class("ListField") ListField = _import_class('ListField')
EmbeddedDocumentListField = _import_class("EmbeddedDocumentListField") if ListField in field_classes:
if ListField in field_classes or EmbeddedDocumentListField in field_classes: # Join all fields via dot notation to the last ListField
# Join all fields via dot notation to the last ListField or EmbeddedDocumentListField
# Then process as normal # Then process as normal
if ListField in field_classes: last_listField = len(
_check_field = ListField cleaned_fields) - field_classes.index(ListField)
else: key = '.'.join(parts[:last_listField])
_check_field = EmbeddedDocumentListField
last_listField = len(cleaned_fields) - field_classes.index(_check_field)
key = ".".join(parts[:last_listField])
parts = parts[last_listField:] parts = parts[last_listField:]
parts.insert(0, key) parts.insert(0, key)
parts.reverse() parts.reverse()
for key in parts: for key in parts:
value = {key: value} value = {key: value}
elif op == "addToSet" and isinstance(value, list): elif op == 'addToSet' and isinstance(value, list):
value = {key: {"$each": value}} value = {key: {'$each': value}}
elif op in ("push", "pushAll"):
if parts[-1].isdigit():
key = ".".join(parts[0:-1])
position = int(parts[-1])
# $position expects an iterable. If pushing a single value,
# wrap it in a list.
if not isinstance(value, (set, tuple, list)):
value = [value]
value = {key: {"$each": value, "$position": position}}
else:
if op == "pushAll":
op = "push" # convert to non-deprecated keyword
if not isinstance(value, (set, tuple, list)):
value = [value]
value = {key: {"$each": value}}
else:
value = {key: value}
else: else:
value = {key: value} value = {key: value}
key = "$" + op key = '$' + op
if key not in mongo_update: if key not in mongo_update:
mongo_update[key] = value mongo_update[key] = value
elif key in mongo_update and isinstance(mongo_update[key], dict): elif key in mongo_update and isinstance(mongo_update[key], dict):
@ -399,47 +347,45 @@ def update(_doc_cls=None, **update):
def _geo_operator(field, op, value): def _geo_operator(field, op, value):
"""Helper to return the query for a given geo query.""" """Helper to return the query for a given geo query."""
if op == "max_distance": if op == 'max_distance':
value = {"$maxDistance": value} value = {'$maxDistance': value}
elif op == "min_distance": elif op == 'min_distance':
value = {"$minDistance": value} value = {'$minDistance': value}
elif field._geo_index == pymongo.GEO2D: elif field._geo_index == pymongo.GEO2D:
if op == "within_distance": if op == 'within_distance':
value = {"$within": {"$center": value}} value = {'$within': {'$center': value}}
elif op == "within_spherical_distance": elif op == 'within_spherical_distance':
value = {"$within": {"$centerSphere": value}} value = {'$within': {'$centerSphere': value}}
elif op == "within_polygon": elif op == 'within_polygon':
value = {"$within": {"$polygon": value}} value = {'$within': {'$polygon': value}}
elif op == "near": elif op == 'near':
value = {"$near": value} value = {'$near': value}
elif op == "near_sphere": elif op == 'near_sphere':
value = {"$nearSphere": value} value = {'$nearSphere': value}
elif op == "within_box": elif op == 'within_box':
value = {"$within": {"$box": value}} value = {'$within': {'$box': value}}
else: else:
raise NotImplementedError( raise NotImplementedError('Geo method "%s" has not been '
'Geo method "%s" has not been ' "implemented for a GeoPointField" % op 'implemented for a GeoPointField' % op)
)
else: else:
if op == "geo_within": if op == 'geo_within':
value = {"$geoWithin": _infer_geometry(value)} value = {'$geoWithin': _infer_geometry(value)}
elif op == "geo_within_box": elif op == 'geo_within_box':
value = {"$geoWithin": {"$box": value}} value = {'$geoWithin': {'$box': value}}
elif op == "geo_within_polygon": elif op == 'geo_within_polygon':
value = {"$geoWithin": {"$polygon": value}} value = {'$geoWithin': {'$polygon': value}}
elif op == "geo_within_center": elif op == 'geo_within_center':
value = {"$geoWithin": {"$center": value}} value = {'$geoWithin': {'$center': value}}
elif op == "geo_within_sphere": elif op == 'geo_within_sphere':
value = {"$geoWithin": {"$centerSphere": value}} value = {'$geoWithin': {'$centerSphere': value}}
elif op == "geo_intersects": elif op == 'geo_intersects':
value = {"$geoIntersects": _infer_geometry(value)} value = {'$geoIntersects': _infer_geometry(value)}
elif op == "near": elif op == 'near':
value = {"$near": _infer_geometry(value)} value = {'$near': _infer_geometry(value)}
else: else:
raise NotImplementedError( raise NotImplementedError(
'Geo method "{}" has not been implemented for a {} '.format( 'Geo method "%s" has not been implemented for a %s '
op, field._name % (op, field._name)
)
) )
return value return value
@ -449,58 +395,33 @@ def _infer_geometry(value):
given value. given value.
""" """
if isinstance(value, dict): if isinstance(value, dict):
if "$geometry" in value: if '$geometry' in value:
return value return value
elif "coordinates" in value and "type" in value: elif 'coordinates' in value and 'type' in value:
return {"$geometry": value} return {'$geometry': value}
raise InvalidQueryError( raise InvalidQueryError('Invalid $geometry dictionary should have '
"Invalid $geometry dictionary should have type and coordinates keys" 'type and coordinates keys')
)
elif isinstance(value, (list, set)): elif isinstance(value, (list, set)):
# TODO: shouldn't we test value[0][0][0][0] to see if it is MultiPolygon? # TODO: shouldn't we test value[0][0][0][0] to see if it is MultiPolygon?
# TODO: should both TypeError and IndexError be alike interpreted?
try: try:
value[0][0][0] value[0][0][0]
return {"$geometry": {"type": "Polygon", "coordinates": value}} return {'$geometry': {'type': 'Polygon', 'coordinates': value}}
except (TypeError, IndexError): except (TypeError, IndexError):
pass pass
try: try:
value[0][0] value[0][0]
return {"$geometry": {"type": "LineString", "coordinates": value}} return {'$geometry': {'type': 'LineString', 'coordinates': value}}
except (TypeError, IndexError): except (TypeError, IndexError):
pass pass
try: try:
value[0] value[0]
return {"$geometry": {"type": "Point", "coordinates": value}} return {'$geometry': {'type': 'Point', 'coordinates': value}}
except (TypeError, IndexError): except (TypeError, IndexError):
pass pass
raise InvalidQueryError( raise InvalidQueryError('Invalid $geometry data. Can be either a '
"Invalid $geometry data. Can be either a " 'dictionary or (nested) lists of coordinate(s)')
"dictionary or (nested) lists of coordinate(s)"
)
def _prepare_query_for_iterable(field, op, value):
# We need a special check for BaseDocument, because - although it's iterable - using
# it as such in the context of this method is most definitely a mistake.
BaseDocument = _import_class("BaseDocument")
if isinstance(value, BaseDocument):
raise TypeError(
"When using the `in`, `nin`, `all`, or "
"`near`-operators you can't use a "
"`Document`, you must wrap your object "
"in a list (object -> [object])."
)
if not hasattr(value, "__iter__"):
raise TypeError(
"The `in`, `nin`, `all`, or "
"`near`-operators must be applied to an "
"iterable (e.g. a list)."
)
return [field.prepare_query_value(op, v) for v in value]

View File

@ -1,26 +1,23 @@
import copy import copy
import warnings
from mongoengine.errors import InvalidQueryError from mongoengine.errors import InvalidQueryError
from mongoengine.queryset import transform from mongoengine.queryset import transform
__all__ = ("Q", "QNode") __all__ = ('Q',)
def warn_empty_is_deprecated(): class QNodeVisitor(object):
msg = "'empty' property is deprecated in favour of using 'not bool(filter)'" """Base visitor class for visiting Q-object nodes in a query tree.
warnings.warn(msg, DeprecationWarning, stacklevel=2) """
class QNodeVisitor:
"""Base visitor class for visiting Q-object nodes in a query tree."""
def visit_combination(self, combination): def visit_combination(self, combination):
"""Called by QCombination objects.""" """Called by QCombination objects.
"""
return combination return combination
def visit_query(self, query): def visit_query(self, query):
"""Called by (New)Q objects.""" """Called by (New)Q objects.
"""
return query return query
@ -46,7 +43,8 @@ class SimplificationVisitor(QNodeVisitor):
return combination return combination
def _query_conjunction(self, queries): def _query_conjunction(self, queries):
"""Merges query dicts - effectively &ing them together.""" """Merges query dicts - effectively &ing them together.
"""
query_ops = set() query_ops = set()
combined_query = {} combined_query = {}
for query in queries: for query in queries:
@ -71,16 +69,16 @@ class QueryCompilerVisitor(QNodeVisitor):
self.document = document self.document = document
def visit_combination(self, combination): def visit_combination(self, combination):
operator = "$and" operator = '$and'
if combination.operation == combination.OR: if combination.operation == combination.OR:
operator = "$or" operator = '$or'
return {operator: combination.children} return {operator: combination.children}
def visit_query(self, query): def visit_query(self, query):
return transform.query(self.document, **query.query) return transform.query(self.document, **query.query)
class QNode: class QNode(object):
"""Base class for nodes in query trees.""" """Base class for nodes in query trees."""
AND = 0 AND = 0
@ -98,19 +96,16 @@ class QNode:
"""Combine this node with another node into a QCombination """Combine this node with another node into a QCombination
object. object.
""" """
# If the other Q() is empty, ignore it and just use `self`. if getattr(other, 'empty', True):
if not bool(other):
return self return self
# Or if this Q is empty, ignore it and just use `other`. if self.empty:
if not bool(self):
return other return other
return QCombination(operation, [self, other]) return QCombination(operation, [self, other])
@property @property
def empty(self): def empty(self):
warn_empty_is_deprecated()
return False return False
def __or__(self, other): def __or__(self, other):
@ -136,13 +131,6 @@ class QCombination(QNode):
else: else:
self.children.append(node) self.children.append(node)
def __repr__(self):
op = " & " if self.operation is self.AND else " | "
return "(%s)" % op.join([repr(node) for node in self.children])
def __bool__(self):
return bool(self.children)
def accept(self, visitor): def accept(self, visitor):
for i in range(len(self.children)): for i in range(len(self.children)):
if isinstance(self.children[i], QNode): if isinstance(self.children[i], QNode):
@ -152,16 +140,8 @@ class QCombination(QNode):
@property @property
def empty(self): def empty(self):
warn_empty_is_deprecated()
return not bool(self.children) return not bool(self.children)
def __eq__(self, other):
return (
self.__class__ == other.__class__
and self.operation == other.operation
and self.children == other.children
)
class Q(QNode): class Q(QNode):
"""A simple query object, used in a query tree to build up more complex """A simple query object, used in a query tree to build up more complex
@ -171,19 +151,9 @@ class Q(QNode):
def __init__(self, **query): def __init__(self, **query):
self.query = query self.query = query
def __repr__(self):
return "Q(**%s)" % repr(self.query)
def __bool__(self):
return bool(self.query)
def __eq__(self, other):
return self.__class__ == other.__class__ and self.query == other.query
def accept(self, visitor): def accept(self, visitor):
return visitor.visit_query(self) return visitor.visit_query(self)
@property @property
def empty(self): def empty(self):
warn_empty_is_deprecated()
return not bool(self.query) return not bool(self.query)

View File

@ -1,12 +1,5 @@
__all__ = ( __all__ = ('pre_init', 'post_init', 'pre_save', 'pre_save_post_validation',
"pre_init", 'post_save', 'pre_delete', 'post_delete')
"post_init",
"pre_save",
"pre_save_post_validation",
"post_save",
"pre_delete",
"post_delete",
)
signals_available = False signals_available = False
try: try:
@ -14,12 +7,11 @@ try:
signals_available = True signals_available = True
except ImportError: except ImportError:
class Namespace(object):
class Namespace:
def signal(self, name, doc=None): def signal(self, name, doc=None):
return _FakeSignal(name, doc) return _FakeSignal(name, doc)
class _FakeSignal: class _FakeSignal(object):
"""If blinker is unavailable, create a fake class with the same """If blinker is unavailable, create a fake class with the same
interface that allows sending of signals but will fail with an interface that allows sending of signals but will fail with an
error on anything else. Instead of doing anything on send, it error on anything else. Instead of doing anything on send, it
@ -31,16 +23,13 @@ except ImportError:
self.__doc__ = doc self.__doc__ = doc
def _fail(self, *args, **kwargs): def _fail(self, *args, **kwargs):
raise RuntimeError( raise RuntimeError('signalling support is unavailable '
"signalling support is unavailable " 'because the blinker library is '
"because the blinker library is " 'not installed.')
"not installed."
)
send = lambda *a, **kw: None # noqa send = lambda *a, **kw: None # noqa
connect = ( connect = disconnect = has_receivers_for = receivers_for = \
disconnect temporarily_connected_to = _fail
) = has_receivers_for = receivers_for = temporarily_connected_to = _fail
del _fail del _fail
@ -48,12 +37,12 @@ except ImportError:
# not put signals in here. Create your own namespace instead. # not put signals in here. Create your own namespace instead.
_signals = Namespace() _signals = Namespace()
pre_init = _signals.signal("pre_init") pre_init = _signals.signal('pre_init')
post_init = _signals.signal("post_init") post_init = _signals.signal('post_init')
pre_save = _signals.signal("pre_save") pre_save = _signals.signal('pre_save')
pre_save_post_validation = _signals.signal("pre_save_post_validation") pre_save_post_validation = _signals.signal('pre_save_post_validation')
post_save = _signals.signal("post_save") post_save = _signals.signal('post_save')
pre_delete = _signals.signal("pre_delete") pre_delete = _signals.signal('pre_delete')
post_delete = _signals.signal("post_delete") post_delete = _signals.signal('post_delete')
pre_bulk_insert = _signals.signal("pre_bulk_insert") pre_bulk_insert = _signals.signal('pre_bulk_insert')
post_bulk_insert = _signals.signal("post_bulk_insert") post_bulk_insert = _signals.signal('post_bulk_insert')

View File

@ -51,4 +51,4 @@ rm -rf $RPM_BUILD_ROOT
# %{python_sitearch}/* # %{python_sitearch}/*
%changelog %changelog
* See: http://docs.mongoengine.org/en/latest/changelog.html * See: http://docs.mongoengine.org/en/latest/changelog.html

View File

@ -1,7 +0,0 @@
black
flake8
pre-commit
pytest
ipdb
ipython
tox

5
requirements.txt Normal file
View File

@ -0,0 +1,5 @@
nose
pymongo>=2.7.1
six==1.10.0
flake8
flake8-import-order

View File

@ -1,18 +1,11 @@
[nosetests]
verbosity=2
detailed-errors=1
tests=tests
cover-package=mongoengine
[flake8] [flake8]
ignore=E501,F403,F405,I201,I202,W504,W605,W503,B007 ignore=E501,F401,F403,F405,I201
exclude=build,dist,docs,venv,venv3,.tox,.eggs,tests exclude=build,dist,docs,venv,venv3,.tox,.eggs,tests
max-complexity=47 max-complexity=47
application-import-names=mongoengine,tests
[tool:pytest]
# Limits the discovery to tests directory
# avoids that it runs for instance the benchmark
testpaths = tests
[isort]
known_first_party = mongoengine,tests
default_section = THIRDPARTY
multi_line_output = 3
include_trailing_comma = True
combine_as_imports = True
line_length = 70
ensure_newline_before_comments = 1

147
setup.py
View File

@ -1,20 +1,20 @@
import os import os
import sys import sys
from pkg_resources import normalize_path
from setuptools import find_packages, setup from setuptools import find_packages, setup
from setuptools.command.test import test as TestCommand
# Hack to silence atexit traceback in newer python versions # Hack to silence atexit traceback in newer python versions
try: try:
import multiprocessing # noqa: F401 import multiprocessing
except ImportError: except ImportError:
pass pass
DESCRIPTION = "MongoEngine is a Python Object-Document Mapper for working with MongoDB." DESCRIPTION = (
'MongoEngine is a Python Object-Document '
'Mapper for working with MongoDB.'
)
try: try:
with open("README.rst") as fin: with open('README.rst') as fin:
LONG_DESCRIPTION = fin.read() LONG_DESCRIPTION = fin.read()
except Exception: except Exception:
LONG_DESCRIPTION = None LONG_DESCRIPTION = None
@ -24,125 +24,64 @@ def get_version(version_tuple):
"""Return the version tuple as a string, e.g. for (0, 10, 7), """Return the version tuple as a string, e.g. for (0, 10, 7),
return '0.10.7'. return '0.10.7'.
""" """
return ".".join(map(str, version_tuple)) return '.'.join(map(str, version_tuple))
class PyTest(TestCommand):
"""Will force pytest to search for tests inside the build directory
for 2to3 converted code (used by tox), instead of the current directory.
Required as long as we need 2to3
Known Limitation: https://tox.readthedocs.io/en/latest/example/pytest.html#known-issues-and-limitations
Source: https://www.hackzine.org/python-testing-with-pytest-and-2to3-plus-tox-and-travis-ci.html
"""
# https://pytest.readthedocs.io/en/2.7.3/goodpractises.html#integration-with-setuptools-test-commands
# Allows to provide pytest command argument through the test runner command `python setup.py test`
# e.g: `python setup.py test -a "-k=test"`
# This only works for 1 argument though
user_options = [("pytest-args=", "a", "Arguments to pass to py.test")]
def initialize_options(self):
TestCommand.initialize_options(self)
self.pytest_args = ""
def finalize_options(self):
TestCommand.finalize_options(self)
self.test_args = ["tests"]
self.test_suite = True
def run_tests(self):
# import here, cause outside the eggs aren't loaded
import pytest
from pkg_resources import _namespace_packages
# Purge modules under test from sys.modules. The test loader will
# re-import them from the build location. Required when 2to3 is used
# with namespace packages.
if sys.version_info >= (3,) and getattr(self.distribution, "use_2to3", False):
module = self.test_args[-1].split(".")[0]
if module in _namespace_packages:
del_modules = []
if module in sys.modules:
del_modules.append(module)
module += "."
for name in sys.modules:
if name.startswith(module):
del_modules.append(name)
map(sys.modules.__delitem__, del_modules)
# Run on the build directory for 2to3-built code
# This will prevent the old 2.x code from being found
# by py.test discovery mechanism, that apparently
# ignores sys.path..
ei_cmd = self.get_finalized_command("egg_info")
self.test_args = [normalize_path(ei_cmd.egg_base)]
cmd_args = self.test_args + ([self.pytest_args] if self.pytest_args else [])
errno = pytest.main(cmd_args)
sys.exit(errno)
# Dirty hack to get version number from monogengine/__init__.py - we can't # Dirty hack to get version number from monogengine/__init__.py - we can't
# import it as it depends on PyMongo and PyMongo isn't installed until this # import it as it depends on PyMongo and PyMongo isn't installed until this
# file is read # file is read
init = os.path.join(os.path.dirname(__file__), "mongoengine", "__init__.py") init = os.path.join(os.path.dirname(__file__), 'mongoengine', '__init__.py')
version_line = list(filter(lambda l: l.startswith("VERSION"), open(init)))[0] version_line = list(filter(lambda l: l.startswith('VERSION'), open(init)))[0]
VERSION = get_version(eval(version_line.split("=")[-1])) VERSION = get_version(eval(version_line.split('=')[-1]))
CLASSIFIERS = [ CLASSIFIERS = [
"Development Status :: 5 - Production/Stable", 'Development Status :: 4 - Beta',
"Intended Audience :: Developers", 'Intended Audience :: Developers',
"License :: OSI Approved :: MIT License", 'License :: OSI Approved :: MIT License',
"Operating System :: OS Independent", 'Operating System :: OS Independent',
"Programming Language :: Python", 'Programming Language :: Python',
"Programming Language :: Python :: 2",
"Programming Language :: Python :: 2.7",
"Programming Language :: Python :: 3", "Programming Language :: Python :: 3",
"Programming Language :: Python :: 3.6", "Programming Language :: Python :: 3.3",
"Programming Language :: Python :: 3.7", "Programming Language :: Python :: 3.4",
"Programming Language :: Python :: 3.8", "Programming Language :: Python :: 3.5",
"Programming Language :: Python :: 3.9",
"Programming Language :: Python :: 3.10",
"Programming Language :: Python :: Implementation :: CPython", "Programming Language :: Python :: Implementation :: CPython",
"Programming Language :: Python :: Implementation :: PyPy", "Programming Language :: Python :: Implementation :: PyPy",
"Topic :: Database", 'Topic :: Database',
"Topic :: Software Development :: Libraries :: Python Modules", 'Topic :: Software Development :: Libraries :: Python Modules',
] ]
extra_opts = { extra_opts = {
"packages": find_packages(exclude=["tests", "tests.*"]), 'packages': find_packages(exclude=['tests', 'tests.*']),
"tests_require": [ 'tests_require': ['nose', 'coverage==4.2', 'blinker', 'Pillow>=2.0.0']
"pytest",
"pytest-cov",
"coverage",
"blinker",
"Pillow>=7.0.0",
],
} }
if sys.version_info[0] == 3:
if "test" in sys.argv: extra_opts['use_2to3'] = True
extra_opts["packages"] = find_packages() if 'test' in sys.argv or 'nosetests' in sys.argv:
extra_opts["package_data"] = { extra_opts['packages'] = find_packages()
"tests": ["fields/mongoengine.png", "fields/mongodb_leaf.png"] extra_opts['package_data'] = {
} 'tests': ['fields/mongoengine.png', 'fields/mongodb_leaf.png']}
else:
extra_opts['tests_require'] += ['python-dateutil']
setup( setup(
name="mongoengine", name='mongoengine',
version=VERSION, version=VERSION,
author="Harry Marr", author='Harry Marr',
author_email="harry.marr@gmail.com", author_email='harry.marr@{nospam}gmail.com',
maintainer="Stefan Wojcik", maintainer="Ross Lawley",
maintainer_email="wojcikstefan@gmail.com", maintainer_email="ross.lawley@{nospam}gmail.com",
url="http://mongoengine.org/", url='http://mongoengine.org/',
download_url="https://github.com/MongoEngine/mongoengine/tarball/master", download_url='https://github.com/MongoEngine/mongoengine/tarball/master',
license="MIT", license='MIT',
include_package_data=True, include_package_data=True,
description=DESCRIPTION, description=DESCRIPTION,
long_description=LONG_DESCRIPTION, long_description=LONG_DESCRIPTION,
platforms=["any"], platforms=['any'],
classifiers=CLASSIFIERS, classifiers=CLASSIFIERS,
python_requires=">=3.6", install_requires=['pymongo>=2.7.1', 'six'],
install_requires=["pymongo>=3.4, <4.0"], test_suite='nose.collector',
cmdclass={"test": PyTest},
**extra_opts **extra_opts
) )

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from all_warnings import AllWarnings
from document import *
from queryset import *
from fields import *

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"""
This test has been put into a module. This is because it tests warnings that
only get triggered on first hit. This way we can ensure its imported into the
top level and called first by the test suite.
"""
import unittest
import warnings
from mongoengine import *
__all__ = ('AllWarnings', )
class AllWarnings(unittest.TestCase):
def setUp(self):
connect(db='mongoenginetest')
self.warning_list = []
self.showwarning_default = warnings.showwarning
warnings.showwarning = self.append_to_warning_list
def append_to_warning_list(self, message, category, *args):
self.warning_list.append({"message": message,
"category": category})
def tearDown(self):
# restore default handling of warnings
warnings.showwarning = self.showwarning_default
def test_document_collection_syntax_warning(self):
class NonAbstractBase(Document):
meta = {'allow_inheritance': True}
class InheritedDocumentFailTest(NonAbstractBase):
meta = {'collection': 'fail'}
warning = self.warning_list[0]
self.assertEqual(SyntaxWarning, warning["category"])
self.assertEqual('non_abstract_base',
InheritedDocumentFailTest._get_collection_name())

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@ -1,35 +0,0 @@
"""
This test has been put into a module. This is because it tests warnings that
only get triggered on first hit. This way we can ensure its imported into the
top level and called first by the test suite.
"""
import unittest
import warnings
from mongoengine import *
class TestAllWarnings(unittest.TestCase):
def setUp(self):
connect(db="mongoenginetest")
self.warning_list = []
self.showwarning_default = warnings.showwarning
warnings.showwarning = self.append_to_warning_list
def append_to_warning_list(self, message, category, *args):
self.warning_list.append({"message": message, "category": category})
def tearDown(self):
# restore default handling of warnings
warnings.showwarning = self.showwarning_default
def test_document_collection_syntax_warning(self):
class NonAbstractBase(Document):
meta = {"allow_inheritance": True}
class InheritedDocumentFailTest(NonAbstractBase):
meta = {"collection": "fail"}
warning = self.warning_list[0]
assert SyntaxWarning == warning["category"]
assert "non_abstract_base" == InheritedDocumentFailTest._get_collection_name()

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import unittest
from class_methods import *
from delta import *
from dynamic import *
from indexes import *
from inheritance import *
from instance import *
from json_serialisation import *
from validation import *
if __name__ == '__main__':
unittest.main()

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# -*- coding: utf-8 -*-
import unittest
from mongoengine import *
from mongoengine.queryset import NULLIFY, PULL
from mongoengine.connection import get_db
__all__ = ("ClassMethodsTest", )
class ClassMethodsTest(unittest.TestCase):
def setUp(self):
connect(db='mongoenginetest')
self.db = get_db()
class Person(Document):
name = StringField()
age = IntField()
non_field = True
meta = {"allow_inheritance": True}
self.Person = Person
def tearDown(self):
for collection in self.db.collection_names():
if 'system.' in collection:
continue
self.db.drop_collection(collection)
def test_definition(self):
"""Ensure that document may be defined using fields.
"""
self.assertEqual(['_cls', 'age', 'id', 'name'],
sorted(self.Person._fields.keys()))
self.assertEqual(["IntField", "ObjectIdField", "StringField", "StringField"],
sorted([x.__class__.__name__ for x in
self.Person._fields.values()]))
def test_get_db(self):
"""Ensure that get_db returns the expected db.
"""
db = self.Person._get_db()
self.assertEqual(self.db, db)
def test_get_collection_name(self):
"""Ensure that get_collection_name returns the expected collection
name.
"""
collection_name = 'person'
self.assertEqual(collection_name, self.Person._get_collection_name())
def test_get_collection(self):
"""Ensure that get_collection returns the expected collection.
"""
collection_name = 'person'
collection = self.Person._get_collection()
self.assertEqual(self.db[collection_name], collection)
def test_drop_collection(self):
"""Ensure that the collection may be dropped from the database.
"""
collection_name = 'person'
self.Person(name='Test').save()
self.assertTrue(collection_name in self.db.collection_names())
self.Person.drop_collection()
self.assertFalse(collection_name in self.db.collection_names())
def test_register_delete_rule(self):
"""Ensure that register delete rule adds a delete rule to the document
meta.
"""
class Job(Document):
employee = ReferenceField(self.Person)
self.assertEqual(self.Person._meta.get('delete_rules'), None)
self.Person.register_delete_rule(Job, 'employee', NULLIFY)
self.assertEqual(self.Person._meta['delete_rules'],
{(Job, 'employee'): NULLIFY})
def test_compare_indexes(self):
""" Ensure that the indexes are properly created and that
compare_indexes identifies the missing/extra indexes
"""
class BlogPost(Document):
author = StringField()
title = StringField()
description = StringField()
tags = StringField()
meta = {
'indexes': [('author', 'title')]
}
BlogPost.drop_collection()
BlogPost.ensure_indexes()
self.assertEqual(BlogPost.compare_indexes(), { 'missing': [], 'extra': [] })
BlogPost.ensure_index(['author', 'description'])
self.assertEqual(BlogPost.compare_indexes(), { 'missing': [], 'extra': [[('author', 1), ('description', 1)]] })
BlogPost._get_collection().drop_index('author_1_description_1')
self.assertEqual(BlogPost.compare_indexes(), { 'missing': [], 'extra': [] })
BlogPost._get_collection().drop_index('author_1_title_1')
self.assertEqual(BlogPost.compare_indexes(), { 'missing': [[('author', 1), ('title', 1)]], 'extra': [] })
def test_compare_indexes_inheritance(self):
""" Ensure that the indexes are properly created and that
compare_indexes identifies the missing/extra indexes for subclassed
documents (_cls included)
"""
class BlogPost(Document):
author = StringField()
title = StringField()
description = StringField()
meta = {
'allow_inheritance': True
}
class BlogPostWithTags(BlogPost):
tags = StringField()
tag_list = ListField(StringField())
meta = {
'indexes': [('author', 'tags')]
}
BlogPost.drop_collection()
BlogPost.ensure_indexes()
BlogPostWithTags.ensure_indexes()
self.assertEqual(BlogPost.compare_indexes(), { 'missing': [], 'extra': [] })
BlogPostWithTags.ensure_index(['author', 'tag_list'])
self.assertEqual(BlogPost.compare_indexes(), { 'missing': [], 'extra': [[('_cls', 1), ('author', 1), ('tag_list', 1)]] })
BlogPostWithTags._get_collection().drop_index('_cls_1_author_1_tag_list_1')
self.assertEqual(BlogPost.compare_indexes(), { 'missing': [], 'extra': [] })
BlogPostWithTags._get_collection().drop_index('_cls_1_author_1_tags_1')
self.assertEqual(BlogPost.compare_indexes(), { 'missing': [[('_cls', 1), ('author', 1), ('tags', 1)]], 'extra': [] })
def test_compare_indexes_multiple_subclasses(self):
""" Ensure that compare_indexes behaves correctly if called from a
class, which base class has multiple subclasses
"""
class BlogPost(Document):
author = StringField()
title = StringField()
description = StringField()
meta = {
'allow_inheritance': True
}
class BlogPostWithTags(BlogPost):
tags = StringField()
tag_list = ListField(StringField())
meta = {
'indexes': [('author', 'tags')]
}
class BlogPostWithCustomField(BlogPost):
custom = DictField()
meta = {
'indexes': [('author', 'custom')]
}
BlogPost.ensure_indexes()
BlogPostWithTags.ensure_indexes()
BlogPostWithCustomField.ensure_indexes()
self.assertEqual(BlogPost.compare_indexes(), { 'missing': [], 'extra': [] })
self.assertEqual(BlogPostWithTags.compare_indexes(), { 'missing': [], 'extra': [] })
self.assertEqual(BlogPostWithCustomField.compare_indexes(), { 'missing': [], 'extra': [] })
def test_list_indexes_inheritance(self):
""" ensure that all of the indexes are listed regardless of the super-
or sub-class that we call it from
"""
class BlogPost(Document):
author = StringField()
title = StringField()
description = StringField()
meta = {
'allow_inheritance': True
}
class BlogPostWithTags(BlogPost):
tags = StringField()
meta = {
'indexes': [('author', 'tags')]
}
class BlogPostWithTagsAndExtraText(BlogPostWithTags):
extra_text = StringField()
meta = {
'indexes': [('author', 'tags', 'extra_text')]
}
BlogPost.drop_collection()
BlogPost.ensure_indexes()
BlogPostWithTags.ensure_indexes()
BlogPostWithTagsAndExtraText.ensure_indexes()
self.assertEqual(BlogPost.list_indexes(),
BlogPostWithTags.list_indexes())
self.assertEqual(BlogPost.list_indexes(),
BlogPostWithTagsAndExtraText.list_indexes())
self.assertEqual(BlogPost.list_indexes(),
[[('_cls', 1), ('author', 1), ('tags', 1)],
[('_cls', 1), ('author', 1), ('tags', 1), ('extra_text', 1)],
[(u'_id', 1)], [('_cls', 1)]])
def test_register_delete_rule_inherited(self):
class Vaccine(Document):
name = StringField(required=True)
meta = {"indexes": ["name"]}
class Animal(Document):
family = StringField(required=True)
vaccine_made = ListField(ReferenceField("Vaccine", reverse_delete_rule=PULL))
meta = {"allow_inheritance": True, "indexes": ["family"]}
class Cat(Animal):
name = StringField(required=True)
self.assertEqual(Vaccine._meta['delete_rules'][(Animal, 'vaccine_made')], PULL)
self.assertEqual(Vaccine._meta['delete_rules'][(Cat, 'vaccine_made')], PULL)
def test_collection_naming(self):
"""Ensure that a collection with a specified name may be used.
"""
class DefaultNamingTest(Document):
pass
self.assertEqual('default_naming_test',
DefaultNamingTest._get_collection_name())
class CustomNamingTest(Document):
meta = {'collection': 'pimp_my_collection'}
self.assertEqual('pimp_my_collection',
CustomNamingTest._get_collection_name())
class DynamicNamingTest(Document):
meta = {'collection': lambda c: "DYNAMO"}
self.assertEqual('DYNAMO', DynamicNamingTest._get_collection_name())
# Use Abstract class to handle backwards compatibility
class BaseDocument(Document):
meta = {
'abstract': True,
'collection': lambda c: c.__name__.lower()
}
class OldNamingConvention(BaseDocument):
pass
self.assertEqual('oldnamingconvention',
OldNamingConvention._get_collection_name())
class InheritedAbstractNamingTest(BaseDocument):
meta = {'collection': 'wibble'}
self.assertEqual('wibble',
InheritedAbstractNamingTest._get_collection_name())
# Mixin tests
class BaseMixin(object):
meta = {
'collection': lambda c: c.__name__.lower()
}
class OldMixinNamingConvention(Document, BaseMixin):
pass
self.assertEqual('oldmixinnamingconvention',
OldMixinNamingConvention._get_collection_name())
class BaseMixin(object):
meta = {
'collection': lambda c: c.__name__.lower()
}
class BaseDocument(Document, BaseMixin):
meta = {'allow_inheritance': True}
class MyDocument(BaseDocument):
pass
self.assertEqual('basedocument', MyDocument._get_collection_name())
def test_custom_collection_name_operations(self):
"""Ensure that a collection with a specified name is used as expected.
"""
collection_name = 'personCollTest'
class Person(Document):
name = StringField()
meta = {'collection': collection_name}
Person(name="Test User").save()
self.assertTrue(collection_name in self.db.collection_names())
user_obj = self.db[collection_name].find_one()
self.assertEqual(user_obj['name'], "Test User")
user_obj = Person.objects[0]
self.assertEqual(user_obj.name, "Test User")
Person.drop_collection()
self.assertFalse(collection_name in self.db.collection_names())
def test_collection_name_and_primary(self):
"""Ensure that a collection with a specified name may be used.
"""
class Person(Document):
name = StringField(primary_key=True)
meta = {'collection': 'app'}
Person(name="Test User").save()
user_obj = Person.objects.first()
self.assertEqual(user_obj.name, "Test User")
Person.drop_collection()
if __name__ == '__main__':
unittest.main()

867
tests/document/delta.py Normal file
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# -*- coding: utf-8 -*-
import unittest
from bson import SON
from mongoengine import *
from mongoengine.connection import get_db
__all__ = ("DeltaTest",)
class DeltaTest(unittest.TestCase):
def setUp(self):
connect(db='mongoenginetest')
self.db = get_db()
class Person(Document):
name = StringField()
age = IntField()
non_field = True
meta = {"allow_inheritance": True}
self.Person = Person
def tearDown(self):
for collection in self.db.collection_names():
if 'system.' in collection:
continue
self.db.drop_collection(collection)
def test_delta(self):
self.delta(Document)
self.delta(DynamicDocument)
def delta(self, DocClass):
class Doc(DocClass):
string_field = StringField()
int_field = IntField()
dict_field = DictField()
list_field = ListField()
Doc.drop_collection()
doc = Doc()
doc.save()
doc = Doc.objects.first()
self.assertEqual(doc._get_changed_fields(), [])
self.assertEqual(doc._delta(), ({}, {}))
doc.string_field = 'hello'
self.assertEqual(doc._get_changed_fields(), ['string_field'])
self.assertEqual(doc._delta(), ({'string_field': 'hello'}, {}))
doc._changed_fields = []
doc.int_field = 1
self.assertEqual(doc._get_changed_fields(), ['int_field'])
self.assertEqual(doc._delta(), ({'int_field': 1}, {}))
doc._changed_fields = []
dict_value = {'hello': 'world', 'ping': 'pong'}
doc.dict_field = dict_value
self.assertEqual(doc._get_changed_fields(), ['dict_field'])
self.assertEqual(doc._delta(), ({'dict_field': dict_value}, {}))
doc._changed_fields = []
list_value = ['1', 2, {'hello': 'world'}]
doc.list_field = list_value
self.assertEqual(doc._get_changed_fields(), ['list_field'])
self.assertEqual(doc._delta(), ({'list_field': list_value}, {}))
# Test unsetting
doc._changed_fields = []
doc.dict_field = {}
self.assertEqual(doc._get_changed_fields(), ['dict_field'])
self.assertEqual(doc._delta(), ({}, {'dict_field': 1}))
doc._changed_fields = []
doc.list_field = []
self.assertEqual(doc._get_changed_fields(), ['list_field'])
self.assertEqual(doc._delta(), ({}, {'list_field': 1}))
def test_delta_recursive(self):
self.delta_recursive(Document, EmbeddedDocument)
self.delta_recursive(DynamicDocument, EmbeddedDocument)
self.delta_recursive(Document, DynamicEmbeddedDocument)
self.delta_recursive(DynamicDocument, DynamicEmbeddedDocument)
def delta_recursive(self, DocClass, EmbeddedClass):
class Embedded(EmbeddedClass):
id = StringField()
string_field = StringField()
int_field = IntField()
dict_field = DictField()
list_field = ListField()
class Doc(DocClass):
string_field = StringField()
int_field = IntField()
dict_field = DictField()
list_field = ListField()
embedded_field = EmbeddedDocumentField(Embedded)
Doc.drop_collection()
doc = Doc()
doc.save()
doc = Doc.objects.first()
self.assertEqual(doc._get_changed_fields(), [])
self.assertEqual(doc._delta(), ({}, {}))
embedded_1 = Embedded()
embedded_1.id = "010101"
embedded_1.string_field = 'hello'
embedded_1.int_field = 1
embedded_1.dict_field = {'hello': 'world'}
embedded_1.list_field = ['1', 2, {'hello': 'world'}]
doc.embedded_field = embedded_1
self.assertEqual(doc._get_changed_fields(), ['embedded_field'])
embedded_delta = {
'id': "010101",
'string_field': 'hello',
'int_field': 1,
'dict_field': {'hello': 'world'},
'list_field': ['1', 2, {'hello': 'world'}]
}
self.assertEqual(doc.embedded_field._delta(), (embedded_delta, {}))
self.assertEqual(doc._delta(),
({'embedded_field': embedded_delta}, {}))
doc.save()
doc = doc.reload(10)
doc.embedded_field.dict_field = {}
self.assertEqual(doc._get_changed_fields(),
['embedded_field.dict_field'])
self.assertEqual(doc.embedded_field._delta(), ({}, {'dict_field': 1}))
self.assertEqual(doc._delta(), ({}, {'embedded_field.dict_field': 1}))
doc.save()
doc = doc.reload(10)
self.assertEqual(doc.embedded_field.dict_field, {})
doc.embedded_field.list_field = []
self.assertEqual(doc._get_changed_fields(),
['embedded_field.list_field'])
self.assertEqual(doc.embedded_field._delta(), ({}, {'list_field': 1}))
self.assertEqual(doc._delta(), ({}, {'embedded_field.list_field': 1}))
doc.save()
doc = doc.reload(10)
self.assertEqual(doc.embedded_field.list_field, [])
embedded_2 = Embedded()
embedded_2.string_field = 'hello'
embedded_2.int_field = 1
embedded_2.dict_field = {'hello': 'world'}
embedded_2.list_field = ['1', 2, {'hello': 'world'}]
doc.embedded_field.list_field = ['1', 2, embedded_2]
self.assertEqual(doc._get_changed_fields(),
['embedded_field.list_field'])
self.assertEqual(doc.embedded_field._delta(), ({
'list_field': ['1', 2, {
'_cls': 'Embedded',
'string_field': 'hello',
'dict_field': {'hello': 'world'},
'int_field': 1,
'list_field': ['1', 2, {'hello': 'world'}],
}]
}, {}))
self.assertEqual(doc._delta(), ({
'embedded_field.list_field': ['1', 2, {
'_cls': 'Embedded',
'string_field': 'hello',
'dict_field': {'hello': 'world'},
'int_field': 1,
'list_field': ['1', 2, {'hello': 'world'}],
}]
}, {}))
doc.save()
doc = doc.reload(10)
self.assertEqual(doc.embedded_field.list_field[0], '1')
self.assertEqual(doc.embedded_field.list_field[1], 2)
for k in doc.embedded_field.list_field[2]._fields:
self.assertEqual(doc.embedded_field.list_field[2][k],
embedded_2[k])
doc.embedded_field.list_field[2].string_field = 'world'
self.assertEqual(doc._get_changed_fields(),
['embedded_field.list_field.2.string_field'])
self.assertEqual(doc.embedded_field._delta(),
({'list_field.2.string_field': 'world'}, {}))
self.assertEqual(doc._delta(),
({'embedded_field.list_field.2.string_field': 'world'}, {}))
doc.save()
doc = doc.reload(10)
self.assertEqual(doc.embedded_field.list_field[2].string_field,
'world')
# Test multiple assignments
doc.embedded_field.list_field[2].string_field = 'hello world'
doc.embedded_field.list_field[2] = doc.embedded_field.list_field[2]
self.assertEqual(doc._get_changed_fields(),
['embedded_field.list_field.2'])
self.assertEqual(doc.embedded_field._delta(), ({'list_field.2': {
'_cls': 'Embedded',
'string_field': 'hello world',
'int_field': 1,
'list_field': ['1', 2, {'hello': 'world'}],
'dict_field': {'hello': 'world'}}
}, {}))
self.assertEqual(doc._delta(), ({'embedded_field.list_field.2': {
'_cls': 'Embedded',
'string_field': 'hello world',
'int_field': 1,
'list_field': ['1', 2, {'hello': 'world'}],
'dict_field': {'hello': 'world'}}
}, {}))
doc.save()
doc = doc.reload(10)
self.assertEqual(doc.embedded_field.list_field[2].string_field,
'hello world')
# Test list native methods
doc.embedded_field.list_field[2].list_field.pop(0)
self.assertEqual(doc._delta(),
({'embedded_field.list_field.2.list_field':
[2, {'hello': 'world'}]}, {}))
doc.save()
doc = doc.reload(10)
doc.embedded_field.list_field[2].list_field.append(1)
self.assertEqual(doc._delta(),
({'embedded_field.list_field.2.list_field':
[2, {'hello': 'world'}, 1]}, {}))
doc.save()
doc = doc.reload(10)
self.assertEqual(doc.embedded_field.list_field[2].list_field,
[2, {'hello': 'world'}, 1])
doc.embedded_field.list_field[2].list_field.sort(key=str)
doc.save()
doc = doc.reload(10)
self.assertEqual(doc.embedded_field.list_field[2].list_field,
[1, 2, {'hello': 'world'}])
del doc.embedded_field.list_field[2].list_field[2]['hello']
self.assertEqual(doc._delta(),
({}, {'embedded_field.list_field.2.list_field.2.hello': 1}))
doc.save()
doc = doc.reload(10)
del doc.embedded_field.list_field[2].list_field
self.assertEqual(doc._delta(),
({}, {'embedded_field.list_field.2.list_field': 1}))
doc.save()
doc = doc.reload(10)
doc.dict_field['Embedded'] = embedded_1
doc.save()
doc = doc.reload(10)
doc.dict_field['Embedded'].string_field = 'Hello World'
self.assertEqual(doc._get_changed_fields(),
['dict_field.Embedded.string_field'])
self.assertEqual(doc._delta(),
({'dict_field.Embedded.string_field': 'Hello World'}, {}))
def test_circular_reference_deltas(self):
self.circular_reference_deltas(Document, Document)
self.circular_reference_deltas(Document, DynamicDocument)
self.circular_reference_deltas(DynamicDocument, Document)
self.circular_reference_deltas(DynamicDocument, DynamicDocument)
def circular_reference_deltas(self, DocClass1, DocClass2):
class Person(DocClass1):
name = StringField()
owns = ListField(ReferenceField('Organization'))
class Organization(DocClass2):
name = StringField()
owner = ReferenceField('Person')
Person.drop_collection()
Organization.drop_collection()
person = Person(name="owner").save()
organization = Organization(name="company").save()
person.owns.append(organization)
organization.owner = person
person.save()
organization.save()
p = Person.objects[0].select_related()
o = Organization.objects.first()
self.assertEqual(p.owns[0], o)
self.assertEqual(o.owner, p)
def test_circular_reference_deltas_2(self):
self.circular_reference_deltas_2(Document, Document)
self.circular_reference_deltas_2(Document, DynamicDocument)
self.circular_reference_deltas_2(DynamicDocument, Document)
self.circular_reference_deltas_2(DynamicDocument, DynamicDocument)
def circular_reference_deltas_2(self, DocClass1, DocClass2, dbref=True):
class Person(DocClass1):
name = StringField()
owns = ListField(ReferenceField('Organization', dbref=dbref))
employer = ReferenceField('Organization', dbref=dbref)
class Organization(DocClass2):
name = StringField()
owner = ReferenceField('Person', dbref=dbref)
employees = ListField(ReferenceField('Person', dbref=dbref))
Person.drop_collection()
Organization.drop_collection()
person = Person(name="owner").save()
employee = Person(name="employee").save()
organization = Organization(name="company").save()
person.owns.append(organization)
organization.owner = person
organization.employees.append(employee)
employee.employer = organization
person.save()
organization.save()
employee.save()
p = Person.objects.get(name="owner")
e = Person.objects.get(name="employee")
o = Organization.objects.first()
self.assertEqual(p.owns[0], o)
self.assertEqual(o.owner, p)
self.assertEqual(e.employer, o)
return person, organization, employee
def test_delta_db_field(self):
self.delta_db_field(Document)
self.delta_db_field(DynamicDocument)
def delta_db_field(self, DocClass):
class Doc(DocClass):
string_field = StringField(db_field='db_string_field')
int_field = IntField(db_field='db_int_field')
dict_field = DictField(db_field='db_dict_field')
list_field = ListField(db_field='db_list_field')
Doc.drop_collection()
doc = Doc()
doc.save()
doc = Doc.objects.first()
self.assertEqual(doc._get_changed_fields(), [])
self.assertEqual(doc._delta(), ({}, {}))
doc.string_field = 'hello'
self.assertEqual(doc._get_changed_fields(), ['db_string_field'])
self.assertEqual(doc._delta(), ({'db_string_field': 'hello'}, {}))
doc._changed_fields = []
doc.int_field = 1
self.assertEqual(doc._get_changed_fields(), ['db_int_field'])
self.assertEqual(doc._delta(), ({'db_int_field': 1}, {}))
doc._changed_fields = []
dict_value = {'hello': 'world', 'ping': 'pong'}
doc.dict_field = dict_value
self.assertEqual(doc._get_changed_fields(), ['db_dict_field'])
self.assertEqual(doc._delta(), ({'db_dict_field': dict_value}, {}))
doc._changed_fields = []
list_value = ['1', 2, {'hello': 'world'}]
doc.list_field = list_value
self.assertEqual(doc._get_changed_fields(), ['db_list_field'])
self.assertEqual(doc._delta(), ({'db_list_field': list_value}, {}))
# Test unsetting
doc._changed_fields = []
doc.dict_field = {}
self.assertEqual(doc._get_changed_fields(), ['db_dict_field'])
self.assertEqual(doc._delta(), ({}, {'db_dict_field': 1}))
doc._changed_fields = []
doc.list_field = []
self.assertEqual(doc._get_changed_fields(), ['db_list_field'])
self.assertEqual(doc._delta(), ({}, {'db_list_field': 1}))
# Test it saves that data
doc = Doc()
doc.save()
doc.string_field = 'hello'
doc.int_field = 1
doc.dict_field = {'hello': 'world'}
doc.list_field = ['1', 2, {'hello': 'world'}]
doc.save()
doc = doc.reload(10)
self.assertEqual(doc.string_field, 'hello')
self.assertEqual(doc.int_field, 1)
self.assertEqual(doc.dict_field, {'hello': 'world'})
self.assertEqual(doc.list_field, ['1', 2, {'hello': 'world'}])
def test_delta_recursive_db_field(self):
self.delta_recursive_db_field(Document, EmbeddedDocument)
self.delta_recursive_db_field(Document, DynamicEmbeddedDocument)
self.delta_recursive_db_field(DynamicDocument, EmbeddedDocument)
self.delta_recursive_db_field(DynamicDocument, DynamicEmbeddedDocument)
def delta_recursive_db_field(self, DocClass, EmbeddedClass):
class Embedded(EmbeddedClass):
string_field = StringField(db_field='db_string_field')
int_field = IntField(db_field='db_int_field')
dict_field = DictField(db_field='db_dict_field')
list_field = ListField(db_field='db_list_field')
class Doc(DocClass):
string_field = StringField(db_field='db_string_field')
int_field = IntField(db_field='db_int_field')
dict_field = DictField(db_field='db_dict_field')
list_field = ListField(db_field='db_list_field')
embedded_field = EmbeddedDocumentField(Embedded,
db_field='db_embedded_field')
Doc.drop_collection()
doc = Doc()
doc.save()
doc = Doc.objects.first()
self.assertEqual(doc._get_changed_fields(), [])
self.assertEqual(doc._delta(), ({}, {}))
embedded_1 = Embedded()
embedded_1.string_field = 'hello'
embedded_1.int_field = 1
embedded_1.dict_field = {'hello': 'world'}
embedded_1.list_field = ['1', 2, {'hello': 'world'}]
doc.embedded_field = embedded_1
self.assertEqual(doc._get_changed_fields(), ['db_embedded_field'])
embedded_delta = {
'db_string_field': 'hello',
'db_int_field': 1,
'db_dict_field': {'hello': 'world'},
'db_list_field': ['1', 2, {'hello': 'world'}]
}
self.assertEqual(doc.embedded_field._delta(), (embedded_delta, {}))
self.assertEqual(doc._delta(),
({'db_embedded_field': embedded_delta}, {}))
doc.save()
doc = doc.reload(10)
doc.embedded_field.dict_field = {}
self.assertEqual(doc._get_changed_fields(),
['db_embedded_field.db_dict_field'])
self.assertEqual(doc.embedded_field._delta(),
({}, {'db_dict_field': 1}))
self.assertEqual(doc._delta(),
({}, {'db_embedded_field.db_dict_field': 1}))
doc.save()
doc = doc.reload(10)
self.assertEqual(doc.embedded_field.dict_field, {})
doc.embedded_field.list_field = []
self.assertEqual(doc._get_changed_fields(),
['db_embedded_field.db_list_field'])
self.assertEqual(doc.embedded_field._delta(),
({}, {'db_list_field': 1}))
self.assertEqual(doc._delta(),
({}, {'db_embedded_field.db_list_field': 1}))
doc.save()
doc = doc.reload(10)
self.assertEqual(doc.embedded_field.list_field, [])
embedded_2 = Embedded()
embedded_2.string_field = 'hello'
embedded_2.int_field = 1
embedded_2.dict_field = {'hello': 'world'}
embedded_2.list_field = ['1', 2, {'hello': 'world'}]
doc.embedded_field.list_field = ['1', 2, embedded_2]
self.assertEqual(doc._get_changed_fields(),
['db_embedded_field.db_list_field'])
self.assertEqual(doc.embedded_field._delta(), ({
'db_list_field': ['1', 2, {
'_cls': 'Embedded',
'db_string_field': 'hello',
'db_dict_field': {'hello': 'world'},
'db_int_field': 1,
'db_list_field': ['1', 2, {'hello': 'world'}],
}]
}, {}))
self.assertEqual(doc._delta(), ({
'db_embedded_field.db_list_field': ['1', 2, {
'_cls': 'Embedded',
'db_string_field': 'hello',
'db_dict_field': {'hello': 'world'},
'db_int_field': 1,
'db_list_field': ['1', 2, {'hello': 'world'}],
}]
}, {}))
doc.save()
doc = doc.reload(10)
self.assertEqual(doc.embedded_field.list_field[0], '1')
self.assertEqual(doc.embedded_field.list_field[1], 2)
for k in doc.embedded_field.list_field[2]._fields:
self.assertEqual(doc.embedded_field.list_field[2][k],
embedded_2[k])
doc.embedded_field.list_field[2].string_field = 'world'
self.assertEqual(doc._get_changed_fields(),
['db_embedded_field.db_list_field.2.db_string_field'])
self.assertEqual(doc.embedded_field._delta(),
({'db_list_field.2.db_string_field': 'world'}, {}))
self.assertEqual(doc._delta(),
({'db_embedded_field.db_list_field.2.db_string_field': 'world'},
{}))
doc.save()
doc = doc.reload(10)
self.assertEqual(doc.embedded_field.list_field[2].string_field,
'world')
# Test multiple assignments
doc.embedded_field.list_field[2].string_field = 'hello world'
doc.embedded_field.list_field[2] = doc.embedded_field.list_field[2]
self.assertEqual(doc._get_changed_fields(),
['db_embedded_field.db_list_field.2'])
self.assertEqual(doc.embedded_field._delta(), ({'db_list_field.2': {
'_cls': 'Embedded',
'db_string_field': 'hello world',
'db_int_field': 1,
'db_list_field': ['1', 2, {'hello': 'world'}],
'db_dict_field': {'hello': 'world'}}}, {}))
self.assertEqual(doc._delta(), ({
'db_embedded_field.db_list_field.2': {
'_cls': 'Embedded',
'db_string_field': 'hello world',
'db_int_field': 1,
'db_list_field': ['1', 2, {'hello': 'world'}],
'db_dict_field': {'hello': 'world'}}
}, {}))
doc.save()
doc = doc.reload(10)
self.assertEqual(doc.embedded_field.list_field[2].string_field,
'hello world')
# Test list native methods
doc.embedded_field.list_field[2].list_field.pop(0)
self.assertEqual(doc._delta(),
({'db_embedded_field.db_list_field.2.db_list_field':
[2, {'hello': 'world'}]}, {}))
doc.save()
doc = doc.reload(10)
doc.embedded_field.list_field[2].list_field.append(1)
self.assertEqual(doc._delta(),
({'db_embedded_field.db_list_field.2.db_list_field':
[2, {'hello': 'world'}, 1]}, {}))
doc.save()
doc = doc.reload(10)
self.assertEqual(doc.embedded_field.list_field[2].list_field,
[2, {'hello': 'world'}, 1])
doc.embedded_field.list_field[2].list_field.sort(key=str)
doc.save()
doc = doc.reload(10)
self.assertEqual(doc.embedded_field.list_field[2].list_field,
[1, 2, {'hello': 'world'}])
del doc.embedded_field.list_field[2].list_field[2]['hello']
self.assertEqual(doc._delta(),
({}, {'db_embedded_field.db_list_field.2.db_list_field.2.hello': 1}))
doc.save()
doc = doc.reload(10)
del doc.embedded_field.list_field[2].list_field
self.assertEqual(doc._delta(), ({},
{'db_embedded_field.db_list_field.2.db_list_field': 1}))
def test_delta_for_dynamic_documents(self):
class Person(DynamicDocument):
name = StringField()
meta = {'allow_inheritance': True}
Person.drop_collection()
p = Person(name="James", age=34)
self.assertEqual(p._delta(), (
SON([('_cls', 'Person'), ('name', 'James'), ('age', 34)]), {}))
p.doc = 123
del p.doc
self.assertEqual(p._delta(), (
SON([('_cls', 'Person'), ('name', 'James'), ('age', 34)]), {}))
p = Person()
p.name = "Dean"
p.age = 22
p.save()
p.age = 24
self.assertEqual(p.age, 24)
self.assertEqual(p._get_changed_fields(), ['age'])
self.assertEqual(p._delta(), ({'age': 24}, {}))
p = Person.objects(age=22).get()
p.age = 24
self.assertEqual(p.age, 24)
self.assertEqual(p._get_changed_fields(), ['age'])
self.assertEqual(p._delta(), ({'age': 24}, {}))
p.save()
self.assertEqual(1, Person.objects(age=24).count())
def test_dynamic_delta(self):
class Doc(DynamicDocument):
pass
Doc.drop_collection()
doc = Doc()
doc.save()
doc = Doc.objects.first()
self.assertEqual(doc._get_changed_fields(), [])
self.assertEqual(doc._delta(), ({}, {}))
doc.string_field = 'hello'
self.assertEqual(doc._get_changed_fields(), ['string_field'])
self.assertEqual(doc._delta(), ({'string_field': 'hello'}, {}))
doc._changed_fields = []
doc.int_field = 1
self.assertEqual(doc._get_changed_fields(), ['int_field'])
self.assertEqual(doc._delta(), ({'int_field': 1}, {}))
doc._changed_fields = []
dict_value = {'hello': 'world', 'ping': 'pong'}
doc.dict_field = dict_value
self.assertEqual(doc._get_changed_fields(), ['dict_field'])
self.assertEqual(doc._delta(), ({'dict_field': dict_value}, {}))
doc._changed_fields = []
list_value = ['1', 2, {'hello': 'world'}]
doc.list_field = list_value
self.assertEqual(doc._get_changed_fields(), ['list_field'])
self.assertEqual(doc._delta(), ({'list_field': list_value}, {}))
# Test unsetting
doc._changed_fields = []
doc.dict_field = {}
self.assertEqual(doc._get_changed_fields(), ['dict_field'])
self.assertEqual(doc._delta(), ({}, {'dict_field': 1}))
doc._changed_fields = []
doc.list_field = []
self.assertEqual(doc._get_changed_fields(), ['list_field'])
self.assertEqual(doc._delta(), ({}, {'list_field': 1}))
def test_delta_with_dbref_true(self):
person, organization, employee = self.circular_reference_deltas_2(Document, Document, True)
employee.name = 'test'
self.assertEqual(organization._get_changed_fields(), [])
updates, removals = organization._delta()
self.assertEqual({}, removals)
self.assertEqual({}, updates)
organization.employees.append(person)
updates, removals = organization._delta()
self.assertEqual({}, removals)
self.assertTrue('employees' in updates)
def test_delta_with_dbref_false(self):
person, organization, employee = self.circular_reference_deltas_2(Document, Document, False)
employee.name = 'test'
self.assertEqual(organization._get_changed_fields(), [])
updates, removals = organization._delta()
self.assertEqual({}, removals)
self.assertEqual({}, updates)
organization.employees.append(person)
updates, removals = organization._delta()
self.assertEqual({}, removals)
self.assertTrue('employees' in updates)
def test_nested_nested_fields_mark_as_changed(self):
class EmbeddedDoc(EmbeddedDocument):
name = StringField()
class MyDoc(Document):
subs = MapField(MapField(EmbeddedDocumentField(EmbeddedDoc)))
name = StringField()
MyDoc.drop_collection()
mydoc = MyDoc(name='testcase1', subs={'a': {'b': EmbeddedDoc(name='foo')}}).save()
mydoc = MyDoc.objects.first()
subdoc = mydoc.subs['a']['b']
subdoc.name = 'bar'
self.assertEqual(["name"], subdoc._get_changed_fields())
self.assertEqual(["subs.a.b.name"], mydoc._get_changed_fields())
mydoc._clear_changed_fields()
self.assertEqual([], mydoc._get_changed_fields())
def test_lower_level_mark_as_changed(self):
class EmbeddedDoc(EmbeddedDocument):
name = StringField()
class MyDoc(Document):
subs = MapField(EmbeddedDocumentField(EmbeddedDoc))
MyDoc.drop_collection()
MyDoc().save()
mydoc = MyDoc.objects.first()
mydoc.subs['a'] = EmbeddedDoc()
self.assertEqual(["subs.a"], mydoc._get_changed_fields())
subdoc = mydoc.subs['a']
subdoc.name = 'bar'
self.assertEqual(["name"], subdoc._get_changed_fields())
self.assertEqual(["subs.a"], mydoc._get_changed_fields())
mydoc.save()
mydoc._clear_changed_fields()
self.assertEqual([], mydoc._get_changed_fields())
def test_upper_level_mark_as_changed(self):
class EmbeddedDoc(EmbeddedDocument):
name = StringField()
class MyDoc(Document):
subs = MapField(EmbeddedDocumentField(EmbeddedDoc))
MyDoc.drop_collection()
MyDoc(subs={'a': EmbeddedDoc(name='foo')}).save()
mydoc = MyDoc.objects.first()
subdoc = mydoc.subs['a']
subdoc.name = 'bar'
self.assertEqual(["name"], subdoc._get_changed_fields())
self.assertEqual(["subs.a.name"], mydoc._get_changed_fields())
mydoc.subs['a'] = EmbeddedDoc()
self.assertEqual(["subs.a"], mydoc._get_changed_fields())
mydoc.save()
mydoc._clear_changed_fields()
self.assertEqual([], mydoc._get_changed_fields())
def test_referenced_object_changed_attributes(self):
"""Ensures that when you save a new reference to a field, the referenced object isn't altered"""
class Organization(Document):
name = StringField()
class User(Document):
name = StringField()
org = ReferenceField('Organization', required=True)
Organization.drop_collection()
User.drop_collection()
org1 = Organization(name='Org 1')
org1.save()
org2 = Organization(name='Org 2')
org2.save()
user = User(name='Fred', org=org1)
user.save()
org1.reload()
org2.reload()
user.reload()
self.assertEqual(org1.name, 'Org 1')
self.assertEqual(org2.name, 'Org 2')
self.assertEqual(user.name, 'Fred')
user.name = 'Harold'
user.org = org2
org2.name = 'New Org 2'
self.assertEqual(org2.name, 'New Org 2')
user.save()
org2.save()
self.assertEqual(org2.name, 'New Org 2')
org2.reload()
self.assertEqual(org2.name, 'New Org 2')
def test_delta_for_nested_map_fields(self):
class UInfoDocument(Document):
phone = StringField()
class EmbeddedRole(EmbeddedDocument):
type = StringField()
class EmbeddedUser(EmbeddedDocument):
name = StringField()
roles = MapField(field=EmbeddedDocumentField(EmbeddedRole))
rolist = ListField(field=EmbeddedDocumentField(EmbeddedRole))
info = ReferenceField(UInfoDocument)
class Doc(Document):
users = MapField(field=EmbeddedDocumentField(EmbeddedUser))
num = IntField(default=-1)
Doc.drop_collection()
doc = Doc(num=1)
doc.users["007"] = EmbeddedUser(name="Agent007")
doc.save()
uinfo = UInfoDocument(phone="79089269066")
uinfo.save()
d = Doc.objects(num=1).first()
d.users["007"]["roles"]["666"] = EmbeddedRole(type="superadmin")
d.users["007"]["rolist"].append(EmbeddedRole(type="oops"))
d.users["007"]["info"] = uinfo
delta = d._delta()
self.assertEqual(True, "users.007.roles.666" in delta[0])
self.assertEqual(True, "users.007.rolist" in delta[0])
self.assertEqual(True, "users.007.info" in delta[0])
self.assertEqual('superadmin', delta[0]["users.007.roles.666"]["type"])
self.assertEqual('oops', delta[0]["users.007.rolist"][0]["type"])
self.assertEqual(uinfo.id, delta[0]["users.007.info"])
if __name__ == '__main__':
unittest.main()

View File

@ -1,20 +1,20 @@
import unittest import unittest
import pytest
from mongoengine import * from mongoengine import *
from tests.utils import MongoDBTestCase from mongoengine.connection import get_db
__all__ = ("TestDynamicDocument",) __all__ = ("DynamicTest", )
class TestDynamicDocument(MongoDBTestCase): class DynamicTest(unittest.TestCase):
def setUp(self): def setUp(self):
super().setUp() connect(db='mongoenginetest')
self.db = get_db()
class Person(DynamicDocument): class Person(DynamicDocument):
name = StringField() name = StringField()
meta = {"allow_inheritance": True} meta = {'allow_inheritance': True}
Person.drop_collection() Person.drop_collection()
@ -27,28 +27,16 @@ class TestDynamicDocument(MongoDBTestCase):
p.name = "James" p.name = "James"
p.age = 34 p.age = 34
assert p.to_mongo() == {"_cls": "Person", "name": "James", "age": 34} self.assertEqual(p.to_mongo(), {"_cls": "Person", "name": "James",
assert p.to_mongo().keys() == ["_cls", "name", "age"] "age": 34})
self.assertEqual(p.to_mongo().keys(), ["_cls", "name", "age"])
p.save() p.save()
assert p.to_mongo().keys() == ["_id", "_cls", "name", "age"] self.assertEqual(p.to_mongo().keys(), ["_id", "_cls", "name", "age"])
assert self.Person.objects.first().age == 34 self.assertEqual(self.Person.objects.first().age, 34)
# Confirm no changes to self.Person # Confirm no changes to self.Person
assert not hasattr(self.Person, "age") self.assertFalse(hasattr(self.Person, 'age'))
def test_dynamic_document_parse_values_in_constructor_like_document_do(self):
class ProductDynamicDocument(DynamicDocument):
title = StringField()
price = FloatField()
class ProductDocument(Document):
title = StringField()
price = FloatField()
product = ProductDocument(title="Blabla", price="12.5")
dyn_product = ProductDynamicDocument(title="Blabla", price="12.5")
assert product.price == dyn_product.price == 12.5
def test_change_scope_of_variable(self): def test_change_scope_of_variable(self):
"""Test changing the scope of a dynamic field has no adverse effects""" """Test changing the scope of a dynamic field has no adverse effects"""
@ -58,11 +46,11 @@ class TestDynamicDocument(MongoDBTestCase):
p.save() p.save()
p = self.Person.objects.get() p = self.Person.objects.get()
p.misc = {"hello": "world"} p.misc = {'hello': 'world'}
p.save() p.save()
p = self.Person.objects.get() p = self.Person.objects.get()
assert p.misc == {"hello": "world"} self.assertEqual(p.misc, {'hello': 'world'})
def test_delete_dynamic_field(self): def test_delete_dynamic_field(self):
"""Test deleting a dynamic field works""" """Test deleting a dynamic field works"""
@ -73,23 +61,23 @@ class TestDynamicDocument(MongoDBTestCase):
p.save() p.save()
p = self.Person.objects.get() p = self.Person.objects.get()
p.misc = {"hello": "world"} p.misc = {'hello': 'world'}
p.save() p.save()
p = self.Person.objects.get() p = self.Person.objects.get()
assert p.misc == {"hello": "world"} self.assertEqual(p.misc, {'hello': 'world'})
collection = self.db[self.Person._get_collection_name()] collection = self.db[self.Person._get_collection_name()]
obj = collection.find_one() obj = collection.find_one()
assert sorted(obj.keys()) == ["_cls", "_id", "misc", "name"] self.assertEqual(sorted(obj.keys()), ['_cls', '_id', 'misc', 'name'])
del p.misc del p.misc
p.save() p.save()
p = self.Person.objects.get() p = self.Person.objects.get()
assert not hasattr(p, "misc") self.assertFalse(hasattr(p, 'misc'))
obj = collection.find_one() obj = collection.find_one()
assert sorted(obj.keys()) == ["_cls", "_id", "name"] self.assertEqual(sorted(obj.keys()), ['_cls', '_id', 'name'])
def test_reload_after_unsetting(self): def test_reload_after_unsetting(self):
p = self.Person() p = self.Person()
@ -103,55 +91,12 @@ class TestDynamicDocument(MongoDBTestCase):
p = self.Person.objects.create() p = self.Person.objects.create()
p.update(age=1) p.update(age=1)
assert len(p._data) == 3 self.assertEqual(len(p._data), 3)
assert sorted(p._data.keys()) == ["_cls", "id", "name"] self.assertEqual(sorted(p._data.keys()), ['_cls', 'id', 'name'])
p.reload() p.reload()
assert len(p._data) == 4 self.assertEqual(len(p._data), 4)
assert sorted(p._data.keys()) == ["_cls", "age", "id", "name"] self.assertEqual(sorted(p._data.keys()), ['_cls', 'age', 'id', 'name'])
def test_fields_without_underscore(self):
"""Ensure we can query dynamic fields"""
Person = self.Person
p = self.Person(name="Dean")
p.save()
raw_p = Person.objects.as_pymongo().get(id=p.id)
assert raw_p == {"_cls": "Person", "_id": p.id, "name": "Dean"}
p.name = "OldDean"
p.newattr = "garbage"
p.save()
raw_p = Person.objects.as_pymongo().get(id=p.id)
assert raw_p == {
"_cls": "Person",
"_id": p.id,
"name": "OldDean",
"newattr": "garbage",
}
def test_fields_containing_underscore(self):
"""Ensure we can query dynamic fields"""
class WeirdPerson(DynamicDocument):
name = StringField()
_name = StringField()
WeirdPerson.drop_collection()
p = WeirdPerson(name="Dean", _name="Dean")
p.save()
raw_p = WeirdPerson.objects.as_pymongo().get(id=p.id)
assert raw_p == {"_id": p.id, "_name": "Dean", "name": "Dean"}
p.name = "OldDean"
p._name = "NewDean"
p._newattr1 = "garbage" # Unknown fields won't be added
p.save()
raw_p = WeirdPerson.objects.as_pymongo().get(id=p.id)
assert raw_p == {"_id": p.id, "_name": "NewDean", "name": "OldDean"}
def test_dynamic_document_queries(self): def test_dynamic_document_queries(self):
"""Ensure we can query dynamic fields""" """Ensure we can query dynamic fields"""
@ -160,10 +105,10 @@ class TestDynamicDocument(MongoDBTestCase):
p.age = 22 p.age = 22
p.save() p.save()
assert 1 == self.Person.objects(age=22).count() self.assertEqual(1, self.Person.objects(age=22).count())
p = self.Person.objects(age=22) p = self.Person.objects(age=22)
p = p.get() p = p.get()
assert 22 == p.age self.assertEqual(22, p.age)
def test_complex_dynamic_document_queries(self): def test_complex_dynamic_document_queries(self):
class Person(DynamicDocument): class Person(DynamicDocument):
@ -183,25 +128,26 @@ class TestDynamicDocument(MongoDBTestCase):
p2.age = 10 p2.age = 10
p2.save() p2.save()
assert Person.objects(age__icontains="ten").count() == 2 self.assertEqual(Person.objects(age__icontains='ten').count(), 2)
assert Person.objects(age__gte=10).count() == 1 self.assertEqual(Person.objects(age__gte=10).count(), 1)
def test_complex_data_lookups(self): def test_complex_data_lookups(self):
"""Ensure you can query dynamic document dynamic fields""" """Ensure you can query dynamic document dynamic fields"""
p = self.Person() p = self.Person()
p.misc = {"hello": "world"} p.misc = {'hello': 'world'}
p.save() p.save()
assert 1 == self.Person.objects(misc__hello="world").count() self.assertEqual(1, self.Person.objects(misc__hello='world').count())
def test_three_level_complex_data_lookups(self): def test_three_level_complex_data_lookups(self):
"""Ensure you can query three level document dynamic fields""" """Ensure you can query three level document dynamic fields"""
self.Person.objects.create(misc={"hello": {"hello2": "world"}}) p = self.Person.objects.create(
assert 1 == self.Person.objects(misc__hello__hello2="world").count() misc={'hello': {'hello2': 'world'}}
)
self.assertEqual(1, self.Person.objects(misc__hello__hello2='world').count())
def test_complex_embedded_document_validation(self): def test_complex_embedded_document_validation(self):
"""Ensure embedded dynamic documents may be validated""" """Ensure embedded dynamic documents may be validated"""
class Embedded(DynamicEmbeddedDocument): class Embedded(DynamicEmbeddedDocument):
content = URLField() content = URLField()
@ -211,29 +157,27 @@ class TestDynamicDocument(MongoDBTestCase):
Doc.drop_collection() Doc.drop_collection()
doc = Doc() doc = Doc()
embedded_doc_1 = Embedded(content="http://mongoengine.org") embedded_doc_1 = Embedded(content='http://mongoengine.org')
embedded_doc_1.validate() embedded_doc_1.validate()
embedded_doc_2 = Embedded(content="this is not a url") embedded_doc_2 = Embedded(content='this is not a url')
with pytest.raises(ValidationError): self.assertRaises(ValidationError, embedded_doc_2.validate)
embedded_doc_2.validate()
doc.embedded_field_1 = embedded_doc_1 doc.embedded_field_1 = embedded_doc_1
doc.embedded_field_2 = embedded_doc_2 doc.embedded_field_2 = embedded_doc_2
with pytest.raises(ValidationError): self.assertRaises(ValidationError, doc.validate)
doc.validate()
def test_inheritance(self): def test_inheritance(self):
"""Ensure that dynamic document plays nice with inheritance""" """Ensure that dynamic document plays nice with inheritance"""
class Employee(self.Person): class Employee(self.Person):
salary = IntField() salary = IntField()
Employee.drop_collection() Employee.drop_collection()
assert "name" in Employee._fields self.assertTrue('name' in Employee._fields)
assert "salary" in Employee._fields self.assertTrue('salary' in Employee._fields)
assert Employee._get_collection_name() == self.Person._get_collection_name() self.assertEqual(Employee._get_collection_name(),
self.Person._get_collection_name())
joe_bloggs = Employee() joe_bloggs = Employee()
joe_bloggs.name = "Joe Bloggs" joe_bloggs.name = "Joe Bloggs"
@ -241,15 +185,14 @@ class TestDynamicDocument(MongoDBTestCase):
joe_bloggs.age = 20 joe_bloggs.age = 20
joe_bloggs.save() joe_bloggs.save()
assert 1 == self.Person.objects(age=20).count() self.assertEqual(1, self.Person.objects(age=20).count())
assert 1 == Employee.objects(age=20).count() self.assertEqual(1, Employee.objects(age=20).count())
joe_bloggs = self.Person.objects.first() joe_bloggs = self.Person.objects.first()
assert isinstance(joe_bloggs, Employee) self.assertTrue(isinstance(joe_bloggs, Employee))
def test_embedded_dynamic_document(self): def test_embedded_dynamic_document(self):
"""Test dynamic embedded documents""" """Test dynamic embedded documents"""
class Embedded(DynamicEmbeddedDocument): class Embedded(DynamicEmbeddedDocument):
pass pass
@ -260,33 +203,33 @@ class TestDynamicDocument(MongoDBTestCase):
doc = Doc() doc = Doc()
embedded_1 = Embedded() embedded_1 = Embedded()
embedded_1.string_field = "hello" embedded_1.string_field = 'hello'
embedded_1.int_field = 1 embedded_1.int_field = 1
embedded_1.dict_field = {"hello": "world"} embedded_1.dict_field = {'hello': 'world'}
embedded_1.list_field = ["1", 2, {"hello": "world"}] embedded_1.list_field = ['1', 2, {'hello': 'world'}]
doc.embedded_field = embedded_1 doc.embedded_field = embedded_1
assert doc.to_mongo() == { self.assertEqual(doc.to_mongo(), {
"embedded_field": { "embedded_field": {
"_cls": "Embedded", "_cls": "Embedded",
"string_field": "hello", "string_field": "hello",
"int_field": 1, "int_field": 1,
"dict_field": {"hello": "world"}, "dict_field": {"hello": "world"},
"list_field": ["1", 2, {"hello": "world"}], "list_field": ['1', 2, {'hello': 'world'}]
} }
} })
doc.save() doc.save()
doc = Doc.objects.first() doc = Doc.objects.first()
assert doc.embedded_field.__class__ == Embedded self.assertEqual(doc.embedded_field.__class__, Embedded)
assert doc.embedded_field.string_field == "hello" self.assertEqual(doc.embedded_field.string_field, "hello")
assert doc.embedded_field.int_field == 1 self.assertEqual(doc.embedded_field.int_field, 1)
assert doc.embedded_field.dict_field == {"hello": "world"} self.assertEqual(doc.embedded_field.dict_field, {'hello': 'world'})
assert doc.embedded_field.list_field == ["1", 2, {"hello": "world"}] self.assertEqual(doc.embedded_field.list_field,
['1', 2, {'hello': 'world'}])
def test_complex_embedded_documents(self): def test_complex_embedded_documents(self):
"""Test complex dynamic embedded documents setups""" """Test complex dynamic embedded documents setups"""
class Embedded(DynamicEmbeddedDocument): class Embedded(DynamicEmbeddedDocument):
pass pass
@ -297,54 +240,51 @@ class TestDynamicDocument(MongoDBTestCase):
doc = Doc() doc = Doc()
embedded_1 = Embedded() embedded_1 = Embedded()
embedded_1.string_field = "hello" embedded_1.string_field = 'hello'
embedded_1.int_field = 1 embedded_1.int_field = 1
embedded_1.dict_field = {"hello": "world"} embedded_1.dict_field = {'hello': 'world'}
embedded_2 = Embedded() embedded_2 = Embedded()
embedded_2.string_field = "hello" embedded_2.string_field = 'hello'
embedded_2.int_field = 1 embedded_2.int_field = 1
embedded_2.dict_field = {"hello": "world"} embedded_2.dict_field = {'hello': 'world'}
embedded_2.list_field = ["1", 2, {"hello": "world"}] embedded_2.list_field = ['1', 2, {'hello': 'world'}]
embedded_1.list_field = ["1", 2, embedded_2] embedded_1.list_field = ['1', 2, embedded_2]
doc.embedded_field = embedded_1 doc.embedded_field = embedded_1
assert doc.to_mongo() == { self.assertEqual(doc.to_mongo(), {
"embedded_field": { "embedded_field": {
"_cls": "Embedded", "_cls": "Embedded",
"string_field": "hello", "string_field": "hello",
"int_field": 1, "int_field": 1,
"dict_field": {"hello": "world"}, "dict_field": {"hello": "world"},
"list_field": [ "list_field": ['1', 2,
"1", {"_cls": "Embedded",
2, "string_field": "hello",
{ "int_field": 1,
"_cls": "Embedded", "dict_field": {"hello": "world"},
"string_field": "hello", "list_field": ['1', 2, {'hello': 'world'}]}
"int_field": 1, ]
"dict_field": {"hello": "world"},
"list_field": ["1", 2, {"hello": "world"}],
},
],
} }
} })
doc.save() doc.save()
doc = Doc.objects.first() doc = Doc.objects.first()
assert doc.embedded_field.__class__ == Embedded self.assertEqual(doc.embedded_field.__class__, Embedded)
assert doc.embedded_field.string_field == "hello" self.assertEqual(doc.embedded_field.string_field, "hello")
assert doc.embedded_field.int_field == 1 self.assertEqual(doc.embedded_field.int_field, 1)
assert doc.embedded_field.dict_field == {"hello": "world"} self.assertEqual(doc.embedded_field.dict_field, {'hello': 'world'})
assert doc.embedded_field.list_field[0] == "1" self.assertEqual(doc.embedded_field.list_field[0], '1')
assert doc.embedded_field.list_field[1] == 2 self.assertEqual(doc.embedded_field.list_field[1], 2)
embedded_field = doc.embedded_field.list_field[2] embedded_field = doc.embedded_field.list_field[2]
assert embedded_field.__class__ == Embedded self.assertEqual(embedded_field.__class__, Embedded)
assert embedded_field.string_field == "hello" self.assertEqual(embedded_field.string_field, "hello")
assert embedded_field.int_field == 1 self.assertEqual(embedded_field.int_field, 1)
assert embedded_field.dict_field == {"hello": "world"} self.assertEqual(embedded_field.dict_field, {'hello': 'world'})
assert embedded_field.list_field == ["1", 2, {"hello": "world"}] self.assertEqual(embedded_field.list_field, ['1', 2,
{'hello': 'world'}])
def test_dynamic_and_embedded(self): def test_dynamic_and_embedded(self):
"""Ensure embedded documents play nicely""" """Ensure embedded documents play nicely"""
@ -363,18 +303,18 @@ class TestDynamicDocument(MongoDBTestCase):
person.address.city = "Lundenne" person.address.city = "Lundenne"
person.save() person.save()
assert Person.objects.first().address.city == "Lundenne" self.assertEqual(Person.objects.first().address.city, "Lundenne")
person = Person.objects.first() person = Person.objects.first()
person.address = Address(city="Londinium") person.address = Address(city="Londinium")
person.save() person.save()
assert Person.objects.first().address.city == "Londinium" self.assertEqual(Person.objects.first().address.city, "Londinium")
person = Person.objects.first() person = Person.objects.first()
person.age = 35 person.age = 35
person.save() person.save()
assert Person.objects.first().age == 35 self.assertEqual(Person.objects.first().age, 35)
def test_dynamic_embedded_works_with_only(self): def test_dynamic_embedded_works_with_only(self):
"""Ensure custom fieldnames on a dynamic embedded document are found by qs.only()""" """Ensure custom fieldnames on a dynamic embedded document are found by qs.only()"""
@ -387,15 +327,10 @@ class TestDynamicDocument(MongoDBTestCase):
Person.drop_collection() Person.drop_collection()
Person( Person(name="Eric", address=Address(city="San Francisco", street_number="1337")).save()
name="Eric", address=Address(city="San Francisco", street_number="1337")
).save()
assert Person.objects.first().address.street_number == "1337" self.assertEqual(Person.objects.first().address.street_number, '1337')
assert ( self.assertEqual(Person.objects.only('address__street_number').first().address.street_number, '1337')
Person.objects.only("address__street_number").first().address.street_number
== "1337"
)
def test_dynamic_and_embedded_dict_access(self): def test_dynamic_and_embedded_dict_access(self):
"""Ensure embedded dynamic documents work with dict[] style access""" """Ensure embedded dynamic documents work with dict[] style access"""
@ -419,21 +354,20 @@ class TestDynamicDocument(MongoDBTestCase):
person["address"]["city"] = "Lundenne" person["address"]["city"] = "Lundenne"
person.save() person.save()
assert Person.objects.first().address.city == "Lundenne" self.assertEqual(Person.objects.first().address.city, "Lundenne")
assert Person.objects.first().phone == "555-1212" self.assertEqual(Person.objects.first().phone, "555-1212")
person = Person.objects.first() person = Person.objects.first()
person.address = Address(city="Londinium") person.address = Address(city="Londinium")
person.save() person.save()
assert Person.objects.first().address.city == "Londinium" self.assertEqual(Person.objects.first().address.city, "Londinium")
person = Person.objects.first() person = Person.objects.first()
person["age"] = 35 person["age"] = 35
person.save() person.save()
assert Person.objects.first().age == 35 self.assertEqual(Person.objects.first().age, 35)
if __name__ == '__main__':
if __name__ == "__main__":
unittest.main() unittest.main()

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@ -0,0 +1,512 @@
# -*- coding: utf-8 -*-
import unittest
import warnings
from datetime import datetime
from tests.fixtures import Base
from mongoengine import Document, EmbeddedDocument, connect
from mongoengine.connection import get_db
from mongoengine.fields import (BooleanField, GenericReferenceField,
IntField, StringField)
__all__ = ('InheritanceTest', )
class InheritanceTest(unittest.TestCase):
def setUp(self):
connect(db='mongoenginetest')
self.db = get_db()
def tearDown(self):
for collection in self.db.collection_names():
if 'system.' in collection:
continue
self.db.drop_collection(collection)
def test_superclasses(self):
"""Ensure that the correct list of superclasses is assembled.
"""
class Animal(Document):
meta = {'allow_inheritance': True}
class Fish(Animal): pass
class Guppy(Fish): pass
class Mammal(Animal): pass
class Dog(Mammal): pass
class Human(Mammal): pass
self.assertEqual(Animal._superclasses, ())
self.assertEqual(Fish._superclasses, ('Animal',))
self.assertEqual(Guppy._superclasses, ('Animal', 'Animal.Fish'))
self.assertEqual(Mammal._superclasses, ('Animal',))
self.assertEqual(Dog._superclasses, ('Animal', 'Animal.Mammal'))
self.assertEqual(Human._superclasses, ('Animal', 'Animal.Mammal'))
def test_external_superclasses(self):
"""Ensure that the correct list of super classes is assembled when
importing part of the model.
"""
class Animal(Base): pass
class Fish(Animal): pass
class Guppy(Fish): pass
class Mammal(Animal): pass
class Dog(Mammal): pass
class Human(Mammal): pass
self.assertEqual(Animal._superclasses, ('Base', ))
self.assertEqual(Fish._superclasses, ('Base', 'Base.Animal',))
self.assertEqual(Guppy._superclasses, ('Base', 'Base.Animal',
'Base.Animal.Fish'))
self.assertEqual(Mammal._superclasses, ('Base', 'Base.Animal',))
self.assertEqual(Dog._superclasses, ('Base', 'Base.Animal',
'Base.Animal.Mammal'))
self.assertEqual(Human._superclasses, ('Base', 'Base.Animal',
'Base.Animal.Mammal'))
def test_subclasses(self):
"""Ensure that the correct list of _subclasses (subclasses) is
assembled.
"""
class Animal(Document):
meta = {'allow_inheritance': True}
class Fish(Animal): pass
class Guppy(Fish): pass
class Mammal(Animal): pass
class Dog(Mammal): pass
class Human(Mammal): pass
self.assertEqual(Animal._subclasses, ('Animal',
'Animal.Fish',
'Animal.Fish.Guppy',
'Animal.Mammal',
'Animal.Mammal.Dog',
'Animal.Mammal.Human'))
self.assertEqual(Fish._subclasses, ('Animal.Fish',
'Animal.Fish.Guppy',))
self.assertEqual(Guppy._subclasses, ('Animal.Fish.Guppy',))
self.assertEqual(Mammal._subclasses, ('Animal.Mammal',
'Animal.Mammal.Dog',
'Animal.Mammal.Human'))
self.assertEqual(Human._subclasses, ('Animal.Mammal.Human',))
def test_external_subclasses(self):
"""Ensure that the correct list of _subclasses (subclasses) is
assembled when importing part of the model.
"""
class Animal(Base): pass
class Fish(Animal): pass
class Guppy(Fish): pass
class Mammal(Animal): pass
class Dog(Mammal): pass
class Human(Mammal): pass
self.assertEqual(Animal._subclasses, ('Base.Animal',
'Base.Animal.Fish',
'Base.Animal.Fish.Guppy',
'Base.Animal.Mammal',
'Base.Animal.Mammal.Dog',
'Base.Animal.Mammal.Human'))
self.assertEqual(Fish._subclasses, ('Base.Animal.Fish',
'Base.Animal.Fish.Guppy',))
self.assertEqual(Guppy._subclasses, ('Base.Animal.Fish.Guppy',))
self.assertEqual(Mammal._subclasses, ('Base.Animal.Mammal',
'Base.Animal.Mammal.Dog',
'Base.Animal.Mammal.Human'))
self.assertEqual(Human._subclasses, ('Base.Animal.Mammal.Human',))
def test_dynamic_declarations(self):
"""Test that declaring an extra class updates meta data"""
class Animal(Document):
meta = {'allow_inheritance': True}
self.assertEqual(Animal._superclasses, ())
self.assertEqual(Animal._subclasses, ('Animal',))
# Test dynamically adding a class changes the meta data
class Fish(Animal):
pass
self.assertEqual(Animal._superclasses, ())
self.assertEqual(Animal._subclasses, ('Animal', 'Animal.Fish'))
self.assertEqual(Fish._superclasses, ('Animal', ))
self.assertEqual(Fish._subclasses, ('Animal.Fish',))
# Test dynamically adding an inherited class changes the meta data
class Pike(Fish):
pass
self.assertEqual(Animal._superclasses, ())
self.assertEqual(Animal._subclasses, ('Animal', 'Animal.Fish',
'Animal.Fish.Pike'))
self.assertEqual(Fish._superclasses, ('Animal', ))
self.assertEqual(Fish._subclasses, ('Animal.Fish', 'Animal.Fish.Pike'))
self.assertEqual(Pike._superclasses, ('Animal', 'Animal.Fish'))
self.assertEqual(Pike._subclasses, ('Animal.Fish.Pike',))
def test_inheritance_meta_data(self):
"""Ensure that document may inherit fields from a superclass document.
"""
class Person(Document):
name = StringField()
age = IntField()
meta = {'allow_inheritance': True}
class Employee(Person):
salary = IntField()
self.assertEqual(['_cls', 'age', 'id', 'name', 'salary'],
sorted(Employee._fields.keys()))
self.assertEqual(Employee._get_collection_name(),
Person._get_collection_name())
def test_inheritance_to_mongo_keys(self):
"""Ensure that document may inherit fields from a superclass document.
"""
class Person(Document):
name = StringField()
age = IntField()
meta = {'allow_inheritance': True}
class Employee(Person):
salary = IntField()
self.assertEqual(['_cls', 'age', 'id', 'name', 'salary'],
sorted(Employee._fields.keys()))
self.assertEqual(Person(name="Bob", age=35).to_mongo().keys(),
['_cls', 'name', 'age'])
self.assertEqual(Employee(name="Bob", age=35, salary=0).to_mongo().keys(),
['_cls', 'name', 'age', 'salary'])
self.assertEqual(Employee._get_collection_name(),
Person._get_collection_name())
def test_indexes_and_multiple_inheritance(self):
""" Ensure that all of the indexes are created for a document with
multiple inheritance.
"""
class A(Document):
a = StringField()
meta = {
'allow_inheritance': True,
'indexes': ['a']
}
class B(Document):
b = StringField()
meta = {
'allow_inheritance': True,
'indexes': ['b']
}
class C(A, B):
pass
A.drop_collection()
B.drop_collection()
C.drop_collection()
C.ensure_indexes()
self.assertEqual(
sorted([idx['key'] for idx in C._get_collection().index_information().values()]),
sorted([[(u'_cls', 1), (u'b', 1)], [(u'_id', 1)], [(u'_cls', 1), (u'a', 1)]])
)
def test_polymorphic_queries(self):
"""Ensure that the correct subclasses are returned from a query
"""
class Animal(Document):
meta = {'allow_inheritance': True}
class Fish(Animal): pass
class Mammal(Animal): pass
class Dog(Mammal): pass
class Human(Mammal): pass
Animal.drop_collection()
Animal().save()
Fish().save()
Mammal().save()
Dog().save()
Human().save()
classes = [obj.__class__ for obj in Animal.objects]
self.assertEqual(classes, [Animal, Fish, Mammal, Dog, Human])
classes = [obj.__class__ for obj in Mammal.objects]
self.assertEqual(classes, [Mammal, Dog, Human])
classes = [obj.__class__ for obj in Human.objects]
self.assertEqual(classes, [Human])
def test_allow_inheritance(self):
"""Ensure that inheritance is disabled by default on simple
classes and that _cls will not be used.
"""
class Animal(Document):
name = StringField()
# can't inherit because Animal didn't explicitly allow inheritance
with self.assertRaises(ValueError):
class Dog(Animal):
pass
# Check that _cls etc aren't present on simple documents
dog = Animal(name='dog').save()
self.assertEqual(dog.to_mongo().keys(), ['_id', 'name'])
collection = self.db[Animal._get_collection_name()]
obj = collection.find_one()
self.assertFalse('_cls' in obj)
def test_cant_turn_off_inheritance_on_subclass(self):
"""Ensure if inheritance is on in a subclass you cant turn it off.
"""
class Animal(Document):
name = StringField()
meta = {'allow_inheritance': True}
with self.assertRaises(ValueError):
class Mammal(Animal):
meta = {'allow_inheritance': False}
def test_allow_inheritance_abstract_document(self):
"""Ensure that abstract documents can set inheritance rules and that
_cls will not be used.
"""
class FinalDocument(Document):
meta = {'abstract': True,
'allow_inheritance': False}
class Animal(FinalDocument):
name = StringField()
with self.assertRaises(ValueError):
class Mammal(Animal):
pass
# Check that _cls isn't present in simple documents
doc = Animal(name='dog')
self.assertFalse('_cls' in doc.to_mongo())
def test_abstract_handle_ids_in_metaclass_properly(self):
class City(Document):
continent = StringField()
meta = {'abstract': True,
'allow_inheritance': False}
class EuropeanCity(City):
name = StringField()
berlin = EuropeanCity(name='Berlin', continent='Europe')
self.assertEqual(len(berlin._db_field_map), len(berlin._fields_ordered))
self.assertEqual(len(berlin._reverse_db_field_map), len(berlin._fields_ordered))
self.assertEqual(len(berlin._fields_ordered), 3)
self.assertEqual(berlin._fields_ordered[0], 'id')
def test_auto_id_not_set_if_specific_in_parent_class(self):
class City(Document):
continent = StringField()
city_id = IntField(primary_key=True)
meta = {'abstract': True,
'allow_inheritance': False}
class EuropeanCity(City):
name = StringField()
berlin = EuropeanCity(name='Berlin', continent='Europe')
self.assertEqual(len(berlin._db_field_map), len(berlin._fields_ordered))
self.assertEqual(len(berlin._reverse_db_field_map), len(berlin._fields_ordered))
self.assertEqual(len(berlin._fields_ordered), 3)
self.assertEqual(berlin._fields_ordered[0], 'city_id')
def test_auto_id_vs_non_pk_id_field(self):
class City(Document):
continent = StringField()
id = IntField()
meta = {'abstract': True,
'allow_inheritance': False}
class EuropeanCity(City):
name = StringField()
berlin = EuropeanCity(name='Berlin', continent='Europe')
self.assertEqual(len(berlin._db_field_map), len(berlin._fields_ordered))
self.assertEqual(len(berlin._reverse_db_field_map), len(berlin._fields_ordered))
self.assertEqual(len(berlin._fields_ordered), 4)
self.assertEqual(berlin._fields_ordered[0], 'auto_id_0')
berlin.save()
self.assertEqual(berlin.pk, berlin.auto_id_0)
def test_abstract_document_creation_does_not_fail(self):
class City(Document):
continent = StringField()
meta = {'abstract': True,
'allow_inheritance': False}
bkk = City(continent='asia')
self.assertEqual(None, bkk.pk)
# TODO: expected error? Shouldn't we create a new error type?
with self.assertRaises(KeyError):
setattr(bkk, 'pk', 1)
def test_allow_inheritance_embedded_document(self):
"""Ensure embedded documents respect inheritance."""
class Comment(EmbeddedDocument):
content = StringField()
with self.assertRaises(ValueError):
class SpecialComment(Comment):
pass
doc = Comment(content='test')
self.assertFalse('_cls' in doc.to_mongo())
class Comment(EmbeddedDocument):
content = StringField()
meta = {'allow_inheritance': True}
doc = Comment(content='test')
self.assertTrue('_cls' in doc.to_mongo())
def test_document_inheritance(self):
"""Ensure mutliple inheritance of abstract documents
"""
class DateCreatedDocument(Document):
meta = {
'allow_inheritance': True,
'abstract': True,
}
class DateUpdatedDocument(Document):
meta = {
'allow_inheritance': True,
'abstract': True,
}
try:
class MyDocument(DateCreatedDocument, DateUpdatedDocument):
pass
except Exception:
self.assertTrue(False, "Couldn't create MyDocument class")
def test_abstract_documents(self):
"""Ensure that a document superclass can be marked as abstract
thereby not using it as the name for the collection."""
defaults = {'index_background': True,
'index_drop_dups': True,
'index_opts': {'hello': 'world'},
'allow_inheritance': True,
'queryset_class': 'QuerySet',
'db_alias': 'myDB',
'shard_key': ('hello', 'world')}
meta_settings = {'abstract': True}
meta_settings.update(defaults)
class Animal(Document):
name = StringField()
meta = meta_settings
class Fish(Animal): pass
class Guppy(Fish): pass
class Mammal(Animal):
meta = {'abstract': True}
class Human(Mammal): pass
for k, v in defaults.iteritems():
for cls in [Animal, Fish, Guppy]:
self.assertEqual(cls._meta[k], v)
self.assertFalse('collection' in Animal._meta)
self.assertFalse('collection' in Mammal._meta)
self.assertEqual(Animal._get_collection_name(), None)
self.assertEqual(Mammal._get_collection_name(), None)
self.assertEqual(Fish._get_collection_name(), 'fish')
self.assertEqual(Guppy._get_collection_name(), 'fish')
self.assertEqual(Human._get_collection_name(), 'human')
# ensure that a subclass of a non-abstract class can't be abstract
with self.assertRaises(ValueError):
class EvilHuman(Human):
evil = BooleanField(default=True)
meta = {'abstract': True}
def test_abstract_embedded_documents(self):
# 789: EmbeddedDocument shouldn't inherit abstract
class A(EmbeddedDocument):
meta = {"abstract": True}
class B(A):
pass
self.assertFalse(B._meta["abstract"])
def test_inherited_collections(self):
"""Ensure that subclassed documents don't override parents'
collections
"""
class Drink(Document):
name = StringField()
meta = {'allow_inheritance': True}
class Drinker(Document):
drink = GenericReferenceField()
try:
warnings.simplefilter("error")
class AcloholicDrink(Drink):
meta = {'collection': 'booze'}
except SyntaxWarning:
warnings.simplefilter("ignore")
class AlcoholicDrink(Drink):
meta = {'collection': 'booze'}
else:
raise AssertionError("SyntaxWarning should be triggered")
warnings.resetwarnings()
Drink.drop_collection()
AlcoholicDrink.drop_collection()
Drinker.drop_collection()
red_bull = Drink(name='Red Bull')
red_bull.save()
programmer = Drinker(drink=red_bull)
programmer.save()
beer = AlcoholicDrink(name='Beer')
beer.save()
real_person = Drinker(drink=beer)
real_person.save()
self.assertEqual(Drinker.objects[0].drink.name, red_bull.name)
self.assertEqual(Drinker.objects[1].drink.name, beer.name)
if __name__ == '__main__':
unittest.main()

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@ -1,14 +1,22 @@
import unittest import unittest
import uuid import uuid
from datetime import datetime
from nose.plugins.skip import SkipTest
from datetime import datetime
from bson import ObjectId from bson import ObjectId
import pymongo
from mongoengine import * from mongoengine import *
from tests.utils import MongoDBTestCase
__all__ = ("TestJson",)
class TestJson(MongoDBTestCase): class TestJson(unittest.TestCase):
def setUp(self):
connect(db='mongoenginetest')
def test_json_names(self): def test_json_names(self):
""" """
Going to test reported issue: Going to test reported issue:
@ -17,24 +25,22 @@ class TestJson(MongoDBTestCase):
a to_json with the original class names and not the abreviated a to_json with the original class names and not the abreviated
mongodb document keys mongodb document keys
""" """
class Embedded(EmbeddedDocument): class Embedded(EmbeddedDocument):
string = StringField(db_field="s") string = StringField(db_field='s')
class Doc(Document): class Doc(Document):
string = StringField(db_field="s") string = StringField(db_field='s')
embedded = EmbeddedDocumentField(Embedded, db_field="e") embedded = EmbeddedDocumentField(Embedded, db_field='e')
doc = Doc(string="Hello", embedded=Embedded(string="Inner Hello")) doc = Doc( string="Hello", embedded=Embedded(string="Inner Hello"))
doc_json = doc.to_json( doc_json = doc.to_json(sort_keys=True, use_db_field=False,separators=(',', ':'))
sort_keys=True, use_db_field=False, separators=(",", ":")
)
expected_json = """{"embedded":{"string":"Inner Hello"},"string":"Hello"}""" expected_json = """{"embedded":{"string":"Inner Hello"},"string":"Hello"}"""
assert doc_json == expected_json self.assertEqual( doc_json, expected_json)
def test_json_simple(self): def test_json_simple(self):
class Embedded(EmbeddedDocument): class Embedded(EmbeddedDocument):
string = StringField() string = StringField()
@ -43,20 +49,22 @@ class TestJson(MongoDBTestCase):
embedded_field = EmbeddedDocumentField(Embedded) embedded_field = EmbeddedDocumentField(Embedded)
def __eq__(self, other): def __eq__(self, other):
return ( return (self.string == other.string and
self.string == other.string self.embedded_field == other.embedded_field)
and self.embedded_field == other.embedded_field
)
doc = Doc(string="Hi", embedded_field=Embedded(string="Hi")) doc = Doc(string="Hi", embedded_field=Embedded(string="Hi"))
doc_json = doc.to_json(sort_keys=True, separators=(",", ":")) doc_json = doc.to_json(sort_keys=True, separators=(',', ':'))
expected_json = """{"embedded_field":{"string":"Hi"},"string":"Hi"}""" expected_json = """{"embedded_field":{"string":"Hi"},"string":"Hi"}"""
assert doc_json == expected_json self.assertEqual(doc_json, expected_json)
assert doc == Doc.from_json(doc.to_json()) self.assertEqual(doc, Doc.from_json(doc.to_json()))
def test_json_complex(self): def test_json_complex(self):
if pymongo.version_tuple[0] <= 2 and pymongo.version_tuple[1] <= 3:
raise SkipTest("Need pymongo 2.4 as has a fix for DBRefs")
class EmbeddedDoc(EmbeddedDocument): class EmbeddedDoc(EmbeddedDocument):
pass pass
@ -64,43 +72,41 @@ class TestJson(MongoDBTestCase):
pass pass
class Doc(Document): class Doc(Document):
string_field = StringField(default="1") string_field = StringField(default='1')
int_field = IntField(default=1) int_field = IntField(default=1)
float_field = FloatField(default=1.1) float_field = FloatField(default=1.1)
boolean_field = BooleanField(default=True) boolean_field = BooleanField(default=True)
datetime_field = DateTimeField(default=datetime.now) datetime_field = DateTimeField(default=datetime.now)
embedded_document_field = EmbeddedDocumentField( embedded_document_field = EmbeddedDocumentField(EmbeddedDoc,
EmbeddedDoc, default=lambda: EmbeddedDoc() default=lambda: EmbeddedDoc())
)
list_field = ListField(default=lambda: [1, 2, 3]) list_field = ListField(default=lambda: [1, 2, 3])
dict_field = DictField(default=lambda: {"hello": "world"}) dict_field = DictField(default=lambda: {"hello": "world"})
objectid_field = ObjectIdField(default=ObjectId) objectid_field = ObjectIdField(default=ObjectId)
reference_field = ReferenceField(Simple, default=lambda: Simple().save()) reference_field = ReferenceField(Simple, default=lambda:
Simple().save())
map_field = MapField(IntField(), default=lambda: {"simple": 1}) map_field = MapField(IntField(), default=lambda: {"simple": 1})
decimal_field = DecimalField(default=1.0) decimal_field = DecimalField(default=1.0)
complex_datetime_field = ComplexDateTimeField(default=datetime.now) complex_datetime_field = ComplexDateTimeField(default=datetime.now)
url_field = URLField(default="http://mongoengine.org") url_field = URLField(default="http://mongoengine.org")
dynamic_field = DynamicField(default=1) dynamic_field = DynamicField(default=1)
generic_reference_field = GenericReferenceField( generic_reference_field = GenericReferenceField(
default=lambda: Simple().save() default=lambda: Simple().save())
) sorted_list_field = SortedListField(IntField(),
sorted_list_field = SortedListField(IntField(), default=lambda: [1, 2, 3]) default=lambda: [1, 2, 3])
email_field = EmailField(default="ross@example.com") email_field = EmailField(default="ross@example.com")
geo_point_field = GeoPointField(default=lambda: [1, 2]) geo_point_field = GeoPointField(default=lambda: [1, 2])
sequence_field = SequenceField() sequence_field = SequenceField()
uuid_field = UUIDField(default=uuid.uuid4) uuid_field = UUIDField(default=uuid.uuid4)
generic_embedded_document_field = GenericEmbeddedDocumentField( generic_embedded_document_field = GenericEmbeddedDocumentField(
default=lambda: EmbeddedDoc() default=lambda: EmbeddedDoc())
)
def __eq__(self, other): def __eq__(self, other):
import json import json
return json.loads(self.to_json()) == json.loads(other.to_json()) return json.loads(self.to_json()) == json.loads(other.to_json())
doc = Doc() doc = Doc()
assert doc == Doc.from_json(doc.to_json()) self.assertEqual(doc, Doc.from_json(doc.to_json()))
if __name__ == "__main__": if __name__ == '__main__':
unittest.main() unittest.main()

View File

@ -1,349 +0,0 @@
import unittest
from mongoengine import *
from mongoengine.connection import get_db
from mongoengine.pymongo_support import list_collection_names
from mongoengine.queryset import NULLIFY, PULL
class TestClassMethods(unittest.TestCase):
def setUp(self):
connect(db="mongoenginetest")
self.db = get_db()
class Person(Document):
name = StringField()
age = IntField()
non_field = True
meta = {"allow_inheritance": True}
self.Person = Person
def tearDown(self):
for collection in list_collection_names(self.db):
self.db.drop_collection(collection)
def test_definition(self):
"""Ensure that document may be defined using fields."""
assert ["_cls", "age", "id", "name"] == sorted(self.Person._fields.keys())
assert ["IntField", "ObjectIdField", "StringField", "StringField"] == sorted(
x.__class__.__name__ for x in self.Person._fields.values()
)
def test_get_db(self):
"""Ensure that get_db returns the expected db."""
db = self.Person._get_db()
assert self.db == db
def test_get_collection_name(self):
"""Ensure that get_collection_name returns the expected collection
name.
"""
collection_name = "person"
assert collection_name == self.Person._get_collection_name()
def test_get_collection(self):
"""Ensure that get_collection returns the expected collection."""
collection_name = "person"
collection = self.Person._get_collection()
assert self.db[collection_name] == collection
def test_drop_collection(self):
"""Ensure that the collection may be dropped from the database."""
collection_name = "person"
self.Person(name="Test").save()
assert collection_name in list_collection_names(self.db)
self.Person.drop_collection()
assert collection_name not in list_collection_names(self.db)
def test_register_delete_rule(self):
"""Ensure that register delete rule adds a delete rule to the document
meta.
"""
class Job(Document):
employee = ReferenceField(self.Person)
assert self.Person._meta.get("delete_rules") is None
self.Person.register_delete_rule(Job, "employee", NULLIFY)
assert self.Person._meta["delete_rules"] == {(Job, "employee"): NULLIFY}
def test_compare_indexes(self):
"""Ensure that the indexes are properly created and that
compare_indexes identifies the missing/extra indexes
"""
class BlogPost(Document):
author = StringField()
title = StringField()
description = StringField()
tags = StringField()
meta = {"indexes": [("author", "title")]}
BlogPost.drop_collection()
BlogPost.ensure_indexes()
assert BlogPost.compare_indexes() == {"missing": [], "extra": []}
BlogPost.ensure_index(["author", "description"])
assert BlogPost.compare_indexes() == {
"missing": [],
"extra": [[("author", 1), ("description", 1)]],
}
BlogPost._get_collection().drop_index("author_1_description_1")
assert BlogPost.compare_indexes() == {"missing": [], "extra": []}
BlogPost._get_collection().drop_index("author_1_title_1")
assert BlogPost.compare_indexes() == {
"missing": [[("author", 1), ("title", 1)]],
"extra": [],
}
def test_compare_indexes_inheritance(self):
"""Ensure that the indexes are properly created and that
compare_indexes identifies the missing/extra indexes for subclassed
documents (_cls included)
"""
class BlogPost(Document):
author = StringField()
title = StringField()
description = StringField()
meta = {"allow_inheritance": True}
class BlogPostWithTags(BlogPost):
tags = StringField()
tag_list = ListField(StringField())
meta = {"indexes": [("author", "tags")]}
BlogPost.drop_collection()
BlogPost.ensure_indexes()
BlogPostWithTags.ensure_indexes()
assert BlogPost.compare_indexes() == {"missing": [], "extra": []}
BlogPostWithTags.ensure_index(["author", "tag_list"])
assert BlogPost.compare_indexes() == {
"missing": [],
"extra": [[("_cls", 1), ("author", 1), ("tag_list", 1)]],
}
BlogPostWithTags._get_collection().drop_index("_cls_1_author_1_tag_list_1")
assert BlogPost.compare_indexes() == {"missing": [], "extra": []}
BlogPostWithTags._get_collection().drop_index("_cls_1_author_1_tags_1")
assert BlogPost.compare_indexes() == {
"missing": [[("_cls", 1), ("author", 1), ("tags", 1)]],
"extra": [],
}
def test_compare_indexes_multiple_subclasses(self):
"""Ensure that compare_indexes behaves correctly if called from a
class, which base class has multiple subclasses
"""
class BlogPost(Document):
author = StringField()
title = StringField()
description = StringField()
meta = {"allow_inheritance": True}
class BlogPostWithTags(BlogPost):
tags = StringField()
tag_list = ListField(StringField())
meta = {"indexes": [("author", "tags")]}
class BlogPostWithCustomField(BlogPost):
custom = DictField()
meta = {"indexes": [("author", "custom")]}
BlogPost.ensure_indexes()
BlogPostWithTags.ensure_indexes()
BlogPostWithCustomField.ensure_indexes()
assert BlogPost.compare_indexes() == {"missing": [], "extra": []}
assert BlogPostWithTags.compare_indexes() == {"missing": [], "extra": []}
assert BlogPostWithCustomField.compare_indexes() == {"missing": [], "extra": []}
def test_compare_indexes_for_text_indexes(self):
"""Ensure that compare_indexes behaves correctly for text indexes"""
class Doc(Document):
a = StringField()
b = StringField()
meta = {
"indexes": [
{
"fields": ["$a", "$b"],
"default_language": "english",
"weights": {"a": 10, "b": 2},
}
]
}
Doc.drop_collection()
Doc.ensure_indexes()
actual = Doc.compare_indexes()
expected = {"missing": [], "extra": []}
assert actual == expected
def test_list_indexes_inheritance(self):
"""ensure that all of the indexes are listed regardless of the super-
or sub-class that we call it from
"""
class BlogPost(Document):
author = StringField()
title = StringField()
description = StringField()
meta = {"allow_inheritance": True}
class BlogPostWithTags(BlogPost):
tags = StringField()
meta = {"indexes": [("author", "tags")]}
class BlogPostWithTagsAndExtraText(BlogPostWithTags):
extra_text = StringField()
meta = {"indexes": [("author", "tags", "extra_text")]}
BlogPost.drop_collection()
BlogPost.ensure_indexes()
BlogPostWithTags.ensure_indexes()
BlogPostWithTagsAndExtraText.ensure_indexes()
assert BlogPost.list_indexes() == BlogPostWithTags.list_indexes()
assert BlogPost.list_indexes() == BlogPostWithTagsAndExtraText.list_indexes()
assert BlogPost.list_indexes() == [
[("_cls", 1), ("author", 1), ("tags", 1)],
[("_cls", 1), ("author", 1), ("tags", 1), ("extra_text", 1)],
[("_id", 1)],
[("_cls", 1)],
]
def test_register_delete_rule_inherited(self):
class Vaccine(Document):
name = StringField(required=True)
meta = {"indexes": ["name"]}
class Animal(Document):
family = StringField(required=True)
vaccine_made = ListField(
ReferenceField("Vaccine", reverse_delete_rule=PULL)
)
meta = {"allow_inheritance": True, "indexes": ["family"]}
class Cat(Animal):
name = StringField(required=True)
assert Vaccine._meta["delete_rules"][(Animal, "vaccine_made")] == PULL
assert Vaccine._meta["delete_rules"][(Cat, "vaccine_made")] == PULL
def test_collection_naming(self):
"""Ensure that a collection with a specified name may be used."""
class DefaultNamingTest(Document):
pass
assert "default_naming_test" == DefaultNamingTest._get_collection_name()
class CustomNamingTest(Document):
meta = {"collection": "pimp_my_collection"}
assert "pimp_my_collection" == CustomNamingTest._get_collection_name()
class DynamicNamingTest(Document):
meta = {"collection": lambda c: "DYNAMO"}
assert "DYNAMO" == DynamicNamingTest._get_collection_name()
# Use Abstract class to handle backwards compatibility
class BaseDocument(Document):
meta = {"abstract": True, "collection": lambda c: c.__name__.lower()}
class OldNamingConvention(BaseDocument):
pass
assert "oldnamingconvention" == OldNamingConvention._get_collection_name()
class InheritedAbstractNamingTest(BaseDocument):
meta = {"collection": "wibble"}
assert "wibble" == InheritedAbstractNamingTest._get_collection_name()
# Mixin tests
class BaseMixin:
meta = {"collection": lambda c: c.__name__.lower()}
class OldMixinNamingConvention(Document, BaseMixin):
pass
assert (
"oldmixinnamingconvention"
== OldMixinNamingConvention._get_collection_name()
)
class BaseMixin:
meta = {"collection": lambda c: c.__name__.lower()}
class BaseDocument(Document, BaseMixin):
meta = {"allow_inheritance": True}
class MyDocument(BaseDocument):
pass
assert "basedocument" == MyDocument._get_collection_name()
def test_custom_collection_name_operations(self):
"""Ensure that a collection with a specified name is used as expected."""
collection_name = "personCollTest"
class Person(Document):
name = StringField()
meta = {"collection": collection_name}
Person(name="Test User").save()
assert collection_name in list_collection_names(self.db)
user_obj = self.db[collection_name].find_one()
assert user_obj["name"] == "Test User"
user_obj = Person.objects[0]
assert user_obj.name == "Test User"
Person.drop_collection()
assert collection_name not in list_collection_names(self.db)
def test_collection_name_and_primary(self):
"""Ensure that a collection with a specified name may be used."""
class Person(Document):
name = StringField(primary_key=True)
meta = {"collection": "app"}
Person(name="Test User").save()
user_obj = Person.objects.first()
assert user_obj.name == "Test User"
Person.drop_collection()
if __name__ == "__main__":
unittest.main()

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