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Fixed #28820 -- Eliminated an extra query with QuerySet.update() on proxy models.

This commit is contained in:
Yan Mitrofanov 2017-11-20 18:25:01 +03:00 committed by Tim Graham
parent a5f1e5809f
commit 54e5c4a00e
2 changed files with 8 additions and 1 deletions
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2
django/db/models/sql/subqueries.py
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@ -122,7 +122,7 @@ class UpdateQuery(Query):
'Cannot update model field %r (only non-relations and ' 'Cannot update model field %r (only non-relations and '
'foreign keys permitted).' % field 'foreign keys permitted).' % field
) )
if model is not self.get_meta().model: if model is not self.get_meta().concrete_model:
self.add_related_update(model, field, val) self.add_related_update(model, field, val)
continue continue
values_seq.append((field, model, val)) values_seq.append((field, model, val))

7
tests/proxy_models/tests.py
View File

@ -276,6 +276,13 @@ class ProxyModelTests(TestCase):
resp = [u.name for u in UserProxy.objects.all()] resp = [u.name for u in UserProxy.objects.all()]
self.assertEqual(resp, ['Bruce']) self.assertEqual(resp, ['Bruce'])
def test_proxy_update(self):
user = User.objects.create(name='Bruce')
with self.assertNumQueries(1):
UserProxy.objects.filter(id=user.id).update(name='George')
user.refresh_from_db()
self.assertEqual(user.name, 'George')
def test_select_related(self): def test_select_related(self):
""" """
We can still use `select_related()` to include related models in our We can still use `select_related()` to include related models in our