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Code Issues 32 Releases Wiki Activity

Fixed #25685 -- Fixed a duplicate query regression on deletion of proxied models.

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Thanks to Trac alias ppetrid for the report and Tim for the review.

Conflicts:
	django/db/models/deletion.py
	tests/delete/tests.py

Forward port of 7c3ef19978 from stable/1.8.x
This commit is contained in:
Simon Charette
2015-11-20 14:18:47 -05:00
parent 6ca163d7cc
commit 6d03bc14e7
3 changed files with 20 additions and 0 deletions
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11
tests/delete/tests.py
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@@ -414,6 +414,17 @@ class DeletionTests(TestCase):
for k, v in existed_objs.items():
self.assertEqual(deleted_objs[k], v)
def test_proxied_model_duplicate_queries(self):
"""
#25685 - Deleting instances of a model with existing proxy
classes should not issue multiple queries during cascade
deletion of referring models.
"""
avatar = Avatar.objects.create()
# One query for the Avatar table and a second for the User one.
with self.assertNumQueries(2):
avatar.delete()
class FastDeleteTests(TestCase):