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Code Issues 32 Releases Wiki Activity

queryset-refactor: Fixed an off-by-one error when filling the select-related

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case. Only affects people using select_related() with the "depth" parameter
*and* extra(select=...) simultaneously. Refs #6018. Thanks, Matthias Urlichs.


git-svn-id: http://code.djangoproject.com/svn/django/branches/queryset-refactor@6755 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Malcolm Tredinnick 2007-11-29 22:07:58 +00:00
parent dfe05d94b8
commit bef4ca2bac
2 changed files with 9 additions and 2 deletions
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7
django/db/models/sql/query.py
View File

@ -634,10 +634,13 @@ class Query(object):
self.rev_join_map[alias] = t_ident
return alias
def fill_related_selections(self, opts=None, root_alias=None, cur_depth=0,
def fill_related_selections(self, opts=None, root_alias=None, cur_depth=1,
used=None):
"""
Fill in the information needed for a select_related query.
Fill in the information needed for a select_related query. The current
"depth" is measured as the number of connections away from the root
model (cur_depth == 1 means we are looking at models with direct
connections to the root model).
"""
if self.max_depth and cur_depth > self.max_depth:
# We've recursed too deeply; bail out.

4
tests/modeltests/select_related/models.py
View File

@ -147,6 +147,10 @@ __test__ = {'API_TESTS':"""
>>> len(db.connection.queries)
5
>>> s = Species.objects.all().select_related(depth=1).extra(select={'a': 'select_related_species.id + 10'})[0]
>>> s.id + 10 == s.a
True
# Reset DEBUG to where we found it.
>>> settings.DEBUG = False
"""}