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Merge pull request #2439 from bagerard/improve_doc

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Improve Fields documentation
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Bastien Gérard 2020-12-08 22:58:00 +01:00 committed by GitHub
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7 changed files with 47 additions and 192 deletions
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2
docs/guide/gridfs.rst
View File

@ -2,8 +2,6 @@
GridFS
======
.. versionadded:: 0.4
Writing
-------

6
mongoengine/base/fields.py
View File

@ -16,8 +16,6 @@ __all__ = ("BaseField", "ComplexBaseField", "ObjectIdField", "GeoJsonBaseField")
class BaseField:
"""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.
.. versionchanged:: 0.5 - added verbose and help text
"""
name = None
@ -265,8 +263,6 @@ class ComplexBaseField(BaseField):
Allows for nesting of embedded documents inside complex types.
Handles the lazy dereferencing of a queryset by lazily dereferencing all
items in a list / dict rather than one at a time.
.. versionadded:: 0.5
"""
field = None
@ -521,8 +517,6 @@ class ObjectIdField(BaseField):
class GeoJsonBaseField(BaseField):
"""A geo json field storing a geojson style object.
.. versionadded:: 0.8
"""
_geo_index = pymongo.GEOSPHERE

6
mongoengine/connection.py
View File

@ -74,8 +74,6 @@ def _get_connection_settings(
: 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.
.. versionchanged:: 0.10.6 - added mongomock support
"""
conn_settings = {
"name": name or db or DEFAULT_DATABASE_NAME,
@ -201,8 +199,6 @@ def register_connection(
: 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.
.. versionchanged:: 0.10.6 - added mongomock support
"""
conn_settings = _get_connection_settings(
db=db,
@ -386,8 +382,6 @@ def connect(db=None, alias=DEFAULT_CONNECTION_NAME, **kwargs):
See the docstring for `register_connection` for more details about all
supported kwargs.
.. versionchanged:: 0.6 - added multiple database support.
"""
if alias in _connections:
prev_conn_setting = _connection_settings[alias]

24
mongoengine/document.py
View File

@ -1,5 +1,4 @@
import re
import warnings
from bson.dbref import DBRef
import pymongo
@ -367,15 +366,6 @@ class Document(BaseDocument, metaclass=TopLevelDocumentMetaclass):
meta['cascade'] = True. Also you can pass different kwargs to
the cascade save using cascade_kwargs which overwrites the
existing kwargs with custom values.
.. versionchanged:: 0.8.5
Optional save_condition that only overwrites existing documents
if the condition is satisfied in the current db record.
.. versionchanged:: 0.10
:class:`OperationError` exception raised if save_condition fails.
.. versionchanged:: 0.10.1
:class: save_condition failure now raises a `SaveConditionError`
.. versionchanged:: 0.10.7
Add signal_kwargs argument
"""
signal_kwargs = signal_kwargs or {}
@ -630,9 +620,6 @@ class Document(BaseDocument, metaclass=TopLevelDocumentMetaclass):
For example, ``save(..., w: 2, fsync: True)`` will
wait until at least two servers have recorded the write and
will force an fsync on the primary server.
.. versionchanged:: 0.10.7
Add signal_kwargs argument
"""
signal_kwargs = signal_kwargs or {}
signals.pre_delete.send(self.__class__, document=self, **signal_kwargs)
@ -714,8 +701,6 @@ class Document(BaseDocument, metaclass=TopLevelDocumentMetaclass):
def select_related(self, max_depth=1):
"""Handles dereferencing of :class:`~bson.dbref.DBRef` objects to
a maximum depth in order to cut down the number queries to mongodb.
.. versionadded:: 0.5
"""
DeReference = _import_class("DeReference")
DeReference()([self], max_depth + 1)
@ -726,10 +711,6 @@ class Document(BaseDocument, metaclass=TopLevelDocumentMetaclass):
:param fields: (optional) args list of fields to reload
:param max_depth: (optional) depth of dereferencing to follow
.. versionadded:: 0.1.2
.. versionchanged:: 0.6 Now chainable
.. versionchanged:: 0.9 Can provide specific fields to reload
"""
max_depth = 1
if fields and isinstance(fields[0], int):
@ -831,9 +812,6 @@ class Document(BaseDocument, metaclass=TopLevelDocumentMetaclass):
Raises :class:`OperationError` if the document has no collection set
(i.g. if it is `abstract`)
.. versionchanged:: 0.10.7
:class:`OperationError` exception raised if no collection available
"""
coll_name = cls._get_collection_name()
if not coll_name:
@ -1088,8 +1066,6 @@ class MapReduceDocument:
an ``ObjectId`` found in the given ``collection``,
the object can be accessed via the ``object`` property.
:param value: The result(s) for this key.
.. versionadded:: 0.3
"""
def __init__(self, document, collection, key, value):

138
mongoengine/fields.py
View File

@ -36,7 +36,6 @@ from mongoengine.common import _import_class
from mongoengine.connection import DEFAULT_CONNECTION_NAME, get_db
from mongoengine.document import Document, EmbeddedDocument
from mongoengine.errors import DoesNotExist, InvalidQueryError, ValidationError
from mongoengine.mongodb_support import MONGODB_36, get_mongodb_version
from mongoengine.queryset import DO_NOTHING
from mongoengine.queryset.base import BaseQuerySet
from mongoengine.queryset.transform import STRING_OPERATORS
@ -101,6 +100,12 @@ class StringField(BaseField):
"""A unicode string field."""
def __init__(self, regex=None, max_length=None, min_length=None, **kwargs):
"""
:param regex: (optional) A string pattern that will be applied during validation
:param max_length: (optional) A max length that will be applied during validation
:param min_length: (optional) A min length that will be applied during validation
:param kwargs: Keyword arguments passed into the parent :class:`~mongoengine.BaseField`
"""
self.regex = re.compile(regex) if regex else None
self.max_length = max_length
self.min_length = min_length
@ -156,10 +161,7 @@ class StringField(BaseField):
class URLField(StringField):
"""A field that validates input as an URL.
.. versionadded:: 0.3
"""
"""A field that validates input as an URL."""
_URL_REGEX = LazyRegexCompiler(
r"^(?:[a-z0-9\.\-]*)://" # scheme is validated separately
@ -174,6 +176,11 @@ class URLField(StringField):
_URL_SCHEMES = ["http", "https", "ftp", "ftps"]
def __init__(self, url_regex=None, schemes=None, **kwargs):
"""
:param url_regex: (optional) Overwrite the default regex used for validation
:param schemes: (optional) Overwrite the default URL schemes that are allowed
:param kwargs: Keyword arguments passed into the parent :class:`~mongoengine.StringField`
"""
self.url_regex = url_regex or self._URL_REGEX
self.schemes = schemes or self._URL_SCHEMES
super().__init__(**kwargs)
@ -192,7 +199,6 @@ class URLField(StringField):
class EmailField(StringField):
"""A field that validates input as an email address.
.. versionadded:: 0.4
"""
USER_REGEX = LazyRegexCompiler(
@ -229,16 +235,11 @@ class EmailField(StringField):
*args,
**kwargs
):
"""Initialize the EmailField.
Args:
domain_whitelist (list) - list of otherwise invalid domain
names which you'd like to support.
allow_utf8_user (bool) - if True, the user part of the email
address can contain UTF8 characters.
False by default.
allow_ip_domain (bool) - if True, the domain part of the email
can be a valid IPv4 or IPv6 address.
"""
:param domain_whitelist: (optional) list of valid domain names applied during validation
:param allow_utf8_user: Allow user part of the email to contain utf8 char
:param allow_ip_domain: Allow domain part of the email to be an IPv4 or IPv6 address
:param kwargs: Keyword arguments passed into the parent :class:`~mongoengine.StringField`
"""
self.domain_whitelist = domain_whitelist or []
self.allow_utf8_user = allow_utf8_user
@ -310,6 +311,11 @@ class IntField(BaseField):
"""32-bit integer field."""
def __init__(self, min_value=None, max_value=None, **kwargs):
"""
:param min_value: (optional) A min value that will be applied during validation
:param max_value: (optional) A max value that will be applied during validation
:param kwargs: Keyword arguments passed into the parent :class:`~mongoengine.BaseField`
"""
self.min_value, self.max_value = min_value, max_value
super().__init__(**kwargs)
@ -343,6 +349,11 @@ class LongField(BaseField):
"""64-bit integer field. (Equivalent to IntField since the support to Python2 was dropped)"""
def __init__(self, min_value=None, max_value=None, **kwargs):
"""
:param min_value: (optional) A min value that will be applied during validation
:param max_value: (optional) A max value that will be applied during validation
:param kwargs: Keyword arguments passed into the parent :class:`~mongoengine.BaseField`
"""
self.min_value, self.max_value = min_value, max_value
super().__init__(**kwargs)
@ -379,6 +390,11 @@ class FloatField(BaseField):
"""Floating point number field."""
def __init__(self, min_value=None, max_value=None, **kwargs):
"""
:param min_value: (optional) A min value that will be applied during validation
:param max_value: (optional) A max value that will be applied during validation
:param kwargs: Keyword arguments passed into the parent :class:`~mongoengine.BaseField`
"""
self.min_value, self.max_value = min_value, max_value
super().__init__(**kwargs)
@ -415,9 +431,6 @@ class FloatField(BaseField):
class DecimalField(BaseField):
"""Fixed-point decimal number field. Stores the value as a float by default unless `force_string` is used.
If using floats, beware of Decimal to float conversion (potential precision loss)
.. versionchanged:: 0.8
.. versionadded:: 0.3
"""
def __init__(
@ -430,8 +443,8 @@ class DecimalField(BaseField):
**kwargs
):
"""
:param min_value: Validation rule for the minimum acceptable value.
:param max_value: Validation rule for the maximum acceptable value.
:param min_value: (optional) A min value that will be applied during validation
:param max_value: (optional) A max value that will be applied during validation
:param force_string: Store the value as a string (instead of a float).
Be aware that this affects query sorting and operation like lte, gte (as string comparison is applied)
and some query operator won't work (e.g. inc, dec)
@ -448,7 +461,7 @@ class DecimalField(BaseField):
- decimal.ROUND_05UP (away from zero if last digit after rounding towards zero would have been 0 or 5; otherwise towards zero)
Defaults to: ``decimal.ROUND_HALF_UP``
:param kwargs: Keyword arguments passed into the parent :class:`~mongoengine.BaseField`
"""
self.min_value = min_value
self.max_value = max_value
@ -498,10 +511,7 @@ class DecimalField(BaseField):
class BooleanField(BaseField):
"""Boolean field type.
.. versionadded:: 0.1.2
"""
"""Boolean field type."""
def to_python(self, value):
try:
@ -551,7 +561,8 @@ class DateTimeField(BaseField):
return self._parse_datetime(value)
def _parse_datetime(self, value):
@staticmethod
def _parse_datetime(value):
# Attempt to parse a datetime from a string
value = value.strip()
if not value:
@ -627,13 +638,12 @@ class ComplexDateTimeField(StringField):
keyword when initializing the field.
Note: To default the field to the current datetime, use: DateTimeField(default=datetime.utcnow)
.. versionadded:: 0.5
"""
def __init__(self, separator=",", **kwargs):
"""
:param separator: Allows to customize the separator used for storage (default ``,``)
:param kwargs: Keyword arguments passed into the parent :class:`~mongoengine.StringField`
"""
self.separator = separator
self.format = separator.join(["%Y", "%m", "%d", "%H", "%M", "%S", "%f"])
@ -975,16 +985,13 @@ class EmbeddedDocumentListField(ListField):
.. note::
The only valid list values are subclasses of
:class:`~mongoengine.EmbeddedDocument`.
.. versionadded:: 0.9
"""
def __init__(self, document_type, **kwargs):
"""
:param document_type: The type of
:class:`~mongoengine.EmbeddedDocument` the list will hold.
:param kwargs: Keyword arguments passed directly into the parent
:class:`~mongoengine.ListField`.
:param kwargs: Keyword arguments passed into the parent :class:`~mongoengine.ListField`
"""
super().__init__(field=EmbeddedDocumentField(document_type), **kwargs)
@ -999,9 +1006,6 @@ class SortedListField(ListField):
save the whole list then other processes trying to save the whole list
as well could overwrite changes. The safest way to append to a list is
to perform a push operation.
.. versionadded:: 0.4
.. versionchanged:: 0.6 - added reverse keyword
"""
_ordering = None
@ -1058,9 +1062,6 @@ class DictField(ComplexBaseField):
.. note::
Required means it cannot be empty - as the default for DictFields is {}
.. versionadded:: 0.3
.. versionchanged:: 0.5 - Can now handle complex / varying types of data
"""
def __init__(self, field=None, *args, **kwargs):
@ -1124,8 +1125,6 @@ class MapField(DictField):
"""A field that maps a name to a specified field type. Similar to
a DictField, except the 'value' of each item must match the specified
field type.
.. versionadded:: 0.5
"""
def __init__(self, field=None, *args, **kwargs):
@ -1173,8 +1172,6 @@ class ReferenceField(BaseField):
org = ReferenceField('Org', reverse_delete_rule=CASCADE)
User.register_delete_rule(Org, 'owner', DENY)
.. versionchanged:: 0.5 added `reverse_delete_rule`
"""
def __init__(
@ -1182,10 +1179,12 @@ class ReferenceField(BaseField):
):
"""Initialises the Reference Field.
:param document_type: The type of Document that will be referenced
:param dbref: Store the reference as :class:`~pymongo.dbref.DBRef`
or as the :class:`~pymongo.objectid.ObjectId`.id .
:param reverse_delete_rule: Determines what to do when the referring
object is deleted
:param kwargs: Keyword arguments passed into the parent :class:`~mongoengine.BaseField`
.. note ::
A reference to an abstract document type is always stored as a
@ -1307,17 +1306,16 @@ class ReferenceField(BaseField):
class CachedReferenceField(BaseField):
"""
A referencefield with cache fields to purpose pseudo-joins
.. versionadded:: 0.9
"""A referencefield with cache fields to purpose pseudo-joins
"""
def __init__(self, document_type, fields=None, auto_sync=True, **kwargs):
"""Initialises the Cached Reference Field.
:param document_type: The type of Document that will be referenced
:param fields: A list of fields to be cached in document
:param auto_sync: if True documents are auto updated.
:param auto_sync: if True documents are auto updated
:param kwargs: Keyword arguments passed into the parent :class:`~mongoengine.BaseField`
"""
if fields is None:
fields = []
@ -1485,8 +1483,6 @@ class GenericReferenceField(BaseField):
it.
* You can use the choices param to limit the acceptable Document types
.. versionadded:: 0.3
"""
def __init__(self, *args, **kwargs):
@ -1692,10 +1688,6 @@ class GridFSError(Exception):
class GridFSProxy:
"""Proxy object to handle writing and reading of files to and from GridFS
.. versionadded:: 0.4
.. versionchanged:: 0.5 - added optional size param to read
.. versionchanged:: 0.6 - added collection name param
"""
_fs = None
@ -1859,10 +1851,6 @@ class GridFSProxy:
class FileField(BaseField):
"""A GridFS storage field.
.. versionadded:: 0.4
.. versionchanged:: 0.5 added optional size param for read
.. versionchanged:: 0.6 added db_alias for multidb support
"""
proxy_class = GridFSProxy
@ -1945,11 +1933,7 @@ class FileField(BaseField):
class ImageGridFsProxy(GridFSProxy):
"""
Proxy for ImageField
versionadded: 0.6
"""
"""Proxy for ImageField"""
def put(self, file_obj, **kwargs):
"""
@ -2083,8 +2067,6 @@ class ImageField(FileField):
:param size: max size to store images, provided as (width, height, force)
if larger, it will be automatically resized (ex: size=(800, 600, True))
:param thumbnail_size: size to generate a thumbnail, provided as (width, height, force)
.. versionadded:: 0.6
"""
proxy_class = ImageGridFsProxy
@ -2132,9 +2114,6 @@ class SequenceField(BaseField):
In case the counter is defined in the abstract document, it will be
common to all inherited documents and the default sequence name will
be the class name of the abstract document.
.. versionadded:: 0.5
.. versionchanged:: 0.8 added `value_decorator`
"""
_auto_gen = True
@ -2248,8 +2227,6 @@ class SequenceField(BaseField):
class UUIDField(BaseField):
"""A UUID field.
.. versionadded:: 0.6
"""
_binary = None
@ -2259,9 +2236,6 @@ class UUIDField(BaseField):
Store UUID data in the database
:param binary: if False store as a string.
.. versionchanged:: 0.8.0
.. versionchanged:: 0.6.19
"""
self._binary = binary
super().__init__(**kwargs)
@ -2306,8 +2280,6 @@ class GeoPointField(BaseField):
representing a geo point. It admits 2d indexes but not "2dsphere" indexes
in MongoDB > 2.4 which are more natural for modeling geospatial points.
See :ref:`geospatial-indexes`
.. versionadded:: 0.4
"""
_geo_index = pymongo.GEO2D
@ -2339,8 +2311,6 @@ class PointField(GeoJsonBaseField):
to set the value.
Requires mongodb >= 2.4
.. versionadded:: 0.8
"""
_type = "Point"
@ -2359,8 +2329,6 @@ class LineStringField(GeoJsonBaseField):
You can either pass a dict with the full information or a list of points.
Requires mongodb >= 2.4
.. versionadded:: 0.8
"""
_type = "LineString"
@ -2382,8 +2350,6 @@ class PolygonField(GeoJsonBaseField):
holes.
Requires mongodb >= 2.4
.. versionadded:: 0.8
"""
_type = "Polygon"
@ -2403,8 +2369,6 @@ class MultiPointField(GeoJsonBaseField):
to set the value.
Requires mongodb >= 2.6
.. versionadded:: 0.9
"""
_type = "MultiPoint"
@ -2424,8 +2388,6 @@ class MultiLineStringField(GeoJsonBaseField):
You can either pass a dict with the full information or a list of points.
Requires mongodb >= 2.6
.. versionadded:: 0.9
"""
_type = "MultiLineString"
@ -2452,8 +2414,6 @@ class MultiPolygonField(GeoJsonBaseField):
of Polygons.
Requires mongodb >= 2.6
.. versionadded:: 0.9
"""
_type = "MultiPolygon"
@ -2466,8 +2426,6 @@ class LazyReferenceField(BaseField):
Instead, access will return a :class:`~mongoengine.base.LazyReference` class
instance, allowing access to `pk` or manual dereference by using
``fetch()`` method.
.. versionadded:: 0.15
"""
def __init__(
@ -2631,8 +2589,6 @@ class GenericLazyReferenceField(GenericReferenceField):
it.
* You can use the choices param to limit the acceptable Document types
.. versionadded:: 0.15
"""
def __init__(self, *args, **kwargs):

57
mongoengine/queryset/base.py
View File

@ -256,8 +256,6 @@ class BaseQuerySet:
`DocumentName.MultipleObjectsReturned` exception if multiple results
and :class:`~mongoengine.queryset.DoesNotExist` or
`DocumentName.DoesNotExist` if no results are found.
.. versionadded:: 0.3
"""
queryset = self.clone()
queryset = queryset.order_by().limit(2)
@ -282,8 +280,6 @@ class BaseQuerySet:
def create(self, **kwargs):
"""Create new object. Returns the saved object instance.
.. versionadded:: 0.4
"""
return self._document(**kwargs).save(force_insert=True)
@ -316,10 +312,6 @@ class BaseQuerySet:
By default returns document instances, set ``load_bulk`` to False to
return just ``ObjectIds``
.. versionadded:: 0.5
.. versionchanged:: 0.10.7
Add signal_kwargs argument
"""
Document = _import_class("Document")
@ -550,8 +542,6 @@ class BaseQuerySet:
:param update: Django-style update keyword arguments
:returns the number of updated documents (unless ``full_result`` is True)
.. versionadded:: 0.2
"""
if not update and not upsert:
raise OperationError("No update parameters, would remove data")
@ -603,8 +593,6 @@ class BaseQuerySet:
:param update: Django-style update keyword arguments
:returns the new or overwritten document
.. versionadded:: 0.10.2
"""
atomic_update = self.update(
@ -638,7 +626,6 @@ class BaseQuerySet:
:param update: Django-style update keyword arguments
full_result
:returns the number of updated documents (unless ``full_result`` is True)
.. versionadded:: 0.2
"""
return self.update(
upsert=upsert,
@ -670,8 +657,6 @@ class BaseQuerySet:
:param new: return updated rather than original document
(default ``False``)
:param update: Django-style update keyword arguments
.. versionadded:: 0.9
"""
if remove and new:
@ -727,8 +712,6 @@ class BaseQuerySet:
`None` if no document exists with that id.
:param object_id: the value for the id of the document to look up
.. versionchanged:: 0.6 Raises InvalidQueryError if filter has been set
"""
queryset = self.clone()
if not queryset._query_obj.empty:
@ -742,8 +725,6 @@ class BaseQuerySet:
:param object_ids: a list or tuple of ObjectId's
:rtype: dict of ObjectId's as keys and collection-specific
Document subclasses as values.
.. versionadded:: 0.3
"""
doc_map = {}
@ -785,8 +766,6 @@ class BaseQuerySet:
evaluated against if you are using more than one database.
:param alias: The database alias
.. versionadded:: 0.9
"""
with switch_db(self._document, alias) as cls:
@ -848,8 +827,6 @@ class BaseQuerySet:
"""Handles dereferencing of :class:`~bson.dbref.DBRef` objects or
:class:`~bson.object_id.ObjectId` a maximum depth in order to cut down
the number queries to mongodb.
.. versionadded:: 0.5
"""
# Make select related work the same for querysets
max_depth += 1
@ -898,8 +875,6 @@ class BaseQuerySet:
Hinting will not do anything if the corresponding index does not exist.
The last hint applied to this cursor takes precedence over all others.
.. versionadded:: 0.5
"""
queryset = self.clone()
queryset._hint = index
@ -961,10 +936,6 @@ class BaseQuerySet:
.. note:: This is a command and won't take ordering or limit into
account.
.. versionadded:: 0.4
.. versionchanged:: 0.5 - Fixed handling references
.. versionchanged:: 0.6 - Improved db_field refrence handling
"""
queryset = self.clone()
@ -1028,9 +999,6 @@ class BaseQuerySet:
field filters.
:param fields: fields to include
.. versionadded:: 0.3
.. versionchanged:: 0.5 - Added subfield support
"""
fields = {f: QueryFieldList.ONLY for f in fields}
return self.fields(True, **fields)
@ -1049,8 +1017,6 @@ class BaseQuerySet:
field filters.
:param fields: fields to exclude
.. versionadded:: 0.5
"""
fields = {f: QueryFieldList.EXCLUDE for f in fields}
return self.fields(**fields)
@ -1077,8 +1043,6 @@ class BaseQuerySet:
:param kwargs: A set of keyword arguments identifying what to
include, exclude, or slice.
.. versionadded:: 0.5
"""
# Check for an operator and transform to mongo-style if there is
@ -1120,8 +1084,6 @@ class BaseQuerySet:
.exclude(). ::
post = BlogPost.objects.exclude('comments').all_fields()
.. versionadded:: 0.5
"""
queryset = self.clone()
queryset._loaded_fields = QueryFieldList(
@ -1194,9 +1156,6 @@ class BaseQuerySet:
"""Enable or disable snapshot mode when querying.
:param enabled: whether or not snapshot mode is enabled
..versionchanged:: 0.5 - made chainable
.. deprecated:: Ignored with PyMongo 3+
"""
msg = "snapshot is deprecated as it has no impact when using PyMongo 3+."
warnings.warn(msg, DeprecationWarning)
@ -1208,8 +1167,6 @@ class BaseQuerySet:
"""Enable or disable the default mongod timeout when querying. (no_cursor_timeout option)
:param enabled: whether or not the timeout is used
..versionchanged:: 0.5 - made chainable
"""
queryset = self.clone()
queryset._timeout = enabled
@ -1308,7 +1265,6 @@ class BaseQuerySet:
parameter will be removed shortly
:param kwargs: (optional) kwargs dictionary to be passed to pymongo's aggregate call
See https://api.mongodb.com/python/current/api/pymongo/collection.html#pymongo.collection.Collection.aggregate
.. versionadded:: 0.9
"""
using_deprecated_interface = isinstance(pipeline, dict) or bool(suppl_pipeline)
user_pipeline = [pipeline] if isinstance(pipeline, dict) else list(pipeline)
@ -1380,12 +1336,6 @@ class BaseQuerySet:
Map/Reduce changed in server version **>= 1.7.4**. The PyMongo
:meth:`~pymongo.collection.Collection.map_reduce` helper requires
PyMongo version **>= 1.11**.
.. versionchanged:: 0.5
- removed ``keep_temp`` keyword argument, which was only relevant
for MongoDB server versions older than 1.7.4
.. versionadded:: 0.3
"""
queryset = self.clone()
@ -1522,8 +1472,6 @@ class BaseQuerySet:
.. note:: When using this mode of query, the database will call your
function, or evaluate your predicate clause, for each object
in the collection.
.. versionadded:: 0.5
"""
queryset = self.clone()
where_clause = queryset._sub_js_fields(where_clause)
@ -1600,9 +1548,6 @@ class BaseQuerySet:
:param field: the field to use
:param normalize: normalize the results so they add to 1.0
:param map_reduce: Use map_reduce over exec_js
.. versionchanged:: 0.5 defaults to map_reduce and can handle embedded
document lookups
"""
if map_reduce:
return self._item_frequencies_map_reduce(field, normalize=normalize)
@ -1632,8 +1577,6 @@ class BaseQuerySet:
def rewind(self):
"""Rewind the cursor to its unevaluated state.
.. versionadded:: 0.3
"""
self._iter = False
self._cursor.rewind()

6
mongoengine/queryset/queryset.py
View File

@ -151,8 +151,6 @@ class QuerySet(BaseQuerySet):
def no_cache(self):
"""Convert to a non-caching queryset
.. versionadded:: 0.8.3 Convert to non caching queryset
"""
if self._result_cache is not None:
raise OperationError("QuerySet already cached")
@ -165,15 +163,11 @@ class QuerySetNoCache(BaseQuerySet):
def cache(self):
"""Convert to a caching queryset
.. versionadded:: 0.8.3 Convert to caching queryset
"""
return self._clone_into(QuerySet(self._document, self._collection))
def __repr__(self):
"""Provides the string representation of the QuerySet
.. versionchanged:: 0.6.13 Now doesnt modify the cursor
"""
if self._iter:
return ".. queryset mid-iteration .."