#34816: GenericForeignKey crashes if content_type_id is changed and object_id is
type incompatible with old object
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Reporter: Richard Laager | Owner: nobody
Type: Bug | Status: new
Component: contrib.contenttypes | Version: 4.2
Severity: Normal | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Changes (by Mariusz Felisiak):
* type: Uncategorized => Bug
* stage: Unreviewed => Accepted
Comment:
I was able to reproduce the issue with the following test:
{{{#!diff
diff --git a/tests/generic_relations_regress/tests.py
b/tests/generic_relations_regress/tests.py
index b7ecb499eb..7b7883ee88 100644
--- a/tests/generic_relations_regress/tests.py
+++ b/tests/generic_relations_regress/tests.py
@@ -314,6 +314,18 @@ class GenericRelationTests(TestCase):
result = Link.objects.filter(places=place)
self.assertCountEqual(result, [link])
+ def test_1(self):
+ from django.contrib.contenttypes.models import ContentType
+
+ board = Board.objects.create(name="some test")
+ oddrel = OddRelation1.objects.create(name="clink")
+ charlink = CharLink.objects.create(content_object=oddrel)
+ charlink = CharLink.objects.get(pk=charlink.pk)
+ charlink.content_object
+ charlink.object_id = board.pk
+ charlink.content_type_id =
ContentType.objects.get_for_model(Board).id
+ charlink.content_object
+
def test_generic_reverse_relation_with_abc(self):
"""
The reverse generic relation accessor (targets) is created if the
}}}
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Ticket URL: <https://code.djangoproject.com/ticket/34816#comment:3>
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