mongoengine/README.rst
2015-04-28 18:54:10 +02:00

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===========
MongoEngine
===========
:Info: MongoEngine is an ORM-like layer on top of PyMongo.
:Repository: https://github.com/MongoEngine/mongoengine
:Author: Harry Marr (http://github.com/hmarr)
:Maintainer: Ross Lawley (http://github.com/rozza)
.. image:: https://secure.travis-ci.org/MongoEngine/mongoengine.png?branch=master
:target: http://travis-ci.org/MongoEngine/mongoengine
.. image:: https://coveralls.io/repos/MongoEngine/mongoengine/badge.png?branch=master
:target: https://coveralls.io/r/MongoEngine/mongoengine?branch=master
.. image:: https://landscape.io/github/MongoEngine/mongoengine/master/landscape.png
:target: https://landscape.io/github/MongoEngine/mongoengine/master
:alt: Code Health
About
=====
MongoEngine is a Python Object-Document Mapper for working with MongoDB.
Documentation available at http://mongoengine-odm.rtfd.org - there is currently
a `tutorial <http://readthedocs.org/docs/mongoengine-odm/en/latest/tutorial.html>`_, a `user guide
<https://mongoengine-odm.readthedocs.org/en/latest/guide/index.html>`_ and an `API reference
<http://readthedocs.org/docs/mongoengine-odm/en/latest/apireference.html>`_.
Installation
============
If you have `setuptools <http://peak.telecommunity.com/DevCenter/setuptools>`_
you can use ``easy_install -U mongoengine``. Otherwise, you can download the
source from `GitHub <http://github.com/MongoEngine/mongoengine>`_ and run ``python
setup.py install``.
Dependencies
============
- pymongo>=2.7.1
- sphinx (optional - for documentation generation)
Optional Dependencies
---------------------
- **Django Integration:** Django>=1.4.0 for Python 2.x or PyPy and Django>=1.5.0 for Python 3.x
- **Image Fields**: Pillow>=2.0.0
- dateutil>=2.1.0
.. note
MongoEngine always runs it's test suite against the latest patch version of each dependecy. e.g.: Django 1.6.5
Examples
========
Some simple examples of what MongoEngine code looks like::
class BlogPost(Document):
title = StringField(required=True, max_length=200)
posted = DateTimeField(default=datetime.datetime.now)
tags = ListField(StringField(max_length=50))
class TextPost(BlogPost):
content = StringField(required=True)
class LinkPost(BlogPost):
url = StringField(required=True)
# Create a text-based post
>>> post1 = TextPost(title='Using MongoEngine', content='See the tutorial')
>>> post1.tags = ['mongodb', 'mongoengine']
>>> post1.save()
# Create a link-based post
>>> post2 = LinkPost(title='MongoEngine Docs', url='hmarr.com/mongoengine')
>>> post2.tags = ['mongoengine', 'documentation']
>>> post2.save()
# Iterate over all posts using the BlogPost superclass
>>> for post in BlogPost.objects:
... print '===', post.title, '==='
... if isinstance(post, TextPost):
... print post.content
... elif isinstance(post, LinkPost):
... print 'Link:', post.url
... print
...
>>> len(BlogPost.objects)
2
>>> len(HtmlPost.objects)
1
>>> len(LinkPost.objects)
1
# Find tagged posts
>>> len(BlogPost.objects(tags='mongoengine'))
2
>>> len(BlogPost.objects(tags='mongodb'))
1
Tests
=====
To run the test suite, ensure you are running a local instance of MongoDB on
the standard port, and run: ``python setup.py test``.
To run the test suite on every supported Python version and every supported PyMongo version,
you can use ``tox``.
tox and each supported Python version should be installed in your environment:
.. code-block:: shell
# Install tox
$ pip install tox
# Run the test suites
$ tox
Community
=========
- `MongoEngine Users mailing list
<http://groups.google.com/group/mongoengine-users>`_
- `MongoEngine Developers mailing list
<http://groups.google.com/group/mongoengine-dev>`_
- `#mongoengine IRC channel <http://webchat.freenode.net/?channels=mongoengine>`_
Contributing
============
We welcome contributions! see the `Contribution guidelines <https://github.com/MongoEngine/mongoengine/blob/master/CONTRIBUTING.rst>`_