mirrors/django
1
0
Fork 0
mirror of https://github.com/django/django.git synced 2025-01-10 10:26:34 +00:00
Code Issues 32 Releases Wiki Activity

Corrected QuerySet.prefetch_related() note about GenericRelation().

Browse Source 
GenericRelation is a reverse generic relationship so it's always
homogeneous. Mentioning this as a restriction is confusing.
This commit is contained in:
Mariusz Felisiak 2023-09-16 06:57:38 +02:00 committed by GitHub
parent 814e7bc220
commit 88b5b7b8e5
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 5 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
docs/ref/models/querysets.txt
View File

@ -1149,10 +1149,11 @@ one-to-one.
``prefetch_related``, on the other hand, does a separate lookup for each ``prefetch_related``, on the other hand, does a separate lookup for each
relationship, and does the 'joining' in Python. This allows it to prefetch relationship, and does the 'joining' in Python. This allows it to prefetch
many-to-many and many-to-one objects, which cannot be done using many-to-many, many-to-one, and
``select_related``, in addition to the foreign key and one-to-one relationships :class:`~django.contrib.contenttypes.fields.GenericRelation` objects which
that are supported by ``select_related``. It also supports prefetching of cannot be done using ``select_related``, in addition to the foreign key and
:class:`~django.contrib.contenttypes.fields.GenericRelation` and one-to-one relationships that are supported by ``select_related``. It also
supports prefetching of
:class:`~django.contrib.contenttypes.fields.GenericForeignKey`, however, it :class:`~django.contrib.contenttypes.fields.GenericForeignKey`, however, it
must be restricted to a homogeneous set of results. For example, prefetching must be restricted to a homogeneous set of results. For example, prefetching
objects referenced by a ``GenericForeignKey`` is only supported if the query objects referenced by a ``GenericForeignKey`` is only supported if the query