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[1.1.X] Fixed #12142 -- EmptyQuerySet.update() no longer updates all rows in the database

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r12171 from trunk.


git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.1.X@12960 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Karen Tracey 2010-04-12 17:27:53 +00:00
parent 4771790c68
commit eca89ea9be
2 changed files with 8 additions and 0 deletions
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6
django/db/models/query.py
View File

@ -948,6 +948,12 @@ class EmptyQuerySet(QuerySet):
# (it raises StopIteration immediately).
yield iter([]).next()
def update(self, **kwargs):
"""
Don't update anything.
"""
return 0
# EmptyQuerySet is always an empty result in where-clauses (and similar
# situations).
value_annotation = False

2
tests/modeltests/lookup/models.py
View File

@ -279,6 +279,8 @@ DoesNotExist: Article matching query does not exist.
[]
>>> Article.objects.none().count()
0
>>> Article.objects.none().update(headline="This should not take effect")
0
>>> [article for article in Article.objects.none().iterator()]
[]