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improve docstring related to #2267 and document the change in the changelog

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This commit is contained in:
Bastien Gérard 2020-03-15 22:14:26 +01:00
parent beabaee345
commit c0c0efce18
2 changed files with 4 additions and 1 deletions
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docs/changelog.rst
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@ -8,6 +8,7 @@ Development
- (Fill this out as you fix issues and develop your features). - (Fill this out as you fix issues and develop your features).
- Add Mongo 4.0 to Travis - Add Mongo 4.0 to Travis
- Fixed a bug causing inaccurate query results, while combining ``__raw__`` and regular filters for the same field #2264 - 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
Changes in 0.19.1 Changes in 0.19.1
================= =================

4
mongoengine/queryset/base.py
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@ -1026,9 +1026,11 @@ class BaseQuerySet(object):
posts = BlogPost.objects(...).fields(comments=0) posts = BlogPost.objects(...).fields(comments=0)
To retrieve a subrange of array elements: To retrieve a subrange or sublist of array elements,
support exist for both the `slice` and `elemMatch` projection operator:
posts = BlogPost.objects(...).fields(slice__comments=5) posts = BlogPost.objects(...).fields(slice__comments=5)
posts = BlogPost.objects(...).fields(elemMatch__comments="test")
:param kwargs: A set of keyword arguments identifying what to :param kwargs: A set of keyword arguments identifying what to
include, exclude, or slice. include, exclude, or slice.