#36135: Prefetching a GenericRelation raises AttributeError
--------------------------------------+------------------------------------
Reporter: john | Owner: (none)
Type: Bug | Status: new
Component: contrib.contenttypes | Version: 5.1
Severity: Normal | Resolution:
Keywords: prefetch | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
--------------------------------------+------------------------------------
Changes (by Sarah Boyce):
* component: Uncategorized => contrib.contenttypes
* stage: Unreviewed => Accepted
* summary: Prefetch GenericForeignKey with ManyToMany field error =>
Prefetching a GenericRelation raises AttributeError
Comment:
Thank you for the report!
Replicated with Simon's test case in the forum, which raises:
`AttributeError: 'Bookmark' object has no attribute 'favorite_fkey'. Did
you mean: 'favorite_tags'?`
{{{#!diff
diff --git a/tests/prefetch_related/tests.py
b/tests/prefetch_related/tests.py
index c153c0d9ec..3a2f5b4c05 100644
--- a/tests/prefetch_related/tests.py
+++ b/tests/prefetch_related/tests.py
@@ -1243,6 +1243,12 @@ def test_deleted_GFK(self):
],
)
+ def test_reverse_gfk(self):
+ bookmark = Bookmark.objects.create()
+ TaggedItem.objects.create(content_object=bookmark,
favorite=bookmark)
+ with self.assertNumQueries(1):
+
list(TaggedItem.objects.prefetch_related("favorite_bookmarks"))
+
class MultiTableInheritanceTest(TestCase):
@classmethod
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/36135#comment:1>
Django <https://code.djangoproject.com/>
The Web framework for perfectionists with deadlines.
--
You received this message because you are subscribed to the Google Groups
"Django updates" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To view this discussion visit
https://groups.google.com/d/msgid/django-updates/0107019497d127ca-3ed3553b-3500-4816-9351-1415f7501914-000000%40eu-central-1.amazonses.com.
