mirrors/django
1
0
Fork 0
mirror of https://github.com/django/django.git synced 2025-09-26 12:09:19 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 4

Fixed #29158 -- Fixed len(choices) crash if ModelChoiceField's queryset is a manager.

Browse source 
Removing all() in __iter__() prevents a duplicate query when choices are
cast to a list and there's a prefetch_related().
This commit is contained in:
François Freitag 2018-02-23 21:12:09 -08:00 • committed by Tim Graham
parent 06172d7bc2
commit 40f0aa9885
3 changed files with 4 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

2
tests/model_forms/tests.py
View file

@ -2339,7 +2339,7 @@ class OtherModelFormTests(TestCase):
return ', '.join(c.name for c in obj.colours.all())
field = ColorModelChoiceField(ColourfulItem.objects.prefetch_related('colours'))
with self.assertNumQueries(4): # would be 5 if prefetch is ignored
with self.assertNumQueries(2): # would be 3 if prefetch is ignored
self.assertEqual(tuple(field.choices), (
('', '---------'),
(multicolor_item.pk, 'blue, red'),