diff options
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/ref/models/querysets.txt | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/docs/ref/models/querysets.txt b/docs/ref/models/querysets.txt index ac62089bf7..25fa01421d 100644 --- a/docs/ref/models/querysets.txt +++ b/docs/ref/models/querysets.txt @@ -884,7 +884,10 @@ many-to-many and many-to-one objects, which cannot be done using ``select_related``, in addition to the foreign key and one-to-one relationships that are supported by ``select_related``. It also supports prefetching of :class:`~django.contrib.contenttypes.fields.GenericRelation` and -:class:`~django.contrib.contenttypes.fields.GenericForeignKey`. +:class:`~django.contrib.contenttypes.fields.GenericForeignKey`, however, it +must be restricted to a homogeneous set of results. For example, prefetching +objects referenced by a ``GenericForeignKey`` is only supported if the query +is restricted to one ``ContentType``. For example, suppose you have these models:: |