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Code Issues 25 Releases Wiki Activity

Fixed #12729 -- Replaced a hard-coded SQL statement with an ORM query so that the contrib.auth ModelBackend will work on a routed multi-db setup. Thanks to dhageman for the report.

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Historical note: The SQL that was removed predates Django being open sourced.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@12509 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Russell Keith-Magee 2010-02-23 12:02:41 +00:00
parent 7ca3e8fecf
commit 6b2f125b80
1 changed files with 5 additions and 27 deletions
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32
django/contrib/auth/backends.py
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@ -4,7 +4,7 @@ except NameError:
from sets import Set as set # Python 2.3 fallback from sets import Set as set # Python 2.3 fallback
from django.db import connection from django.db import connection
from django.contrib.auth.models import User from django.contrib.auth.models import User, Permission
class ModelBackend(object): class ModelBackend(object):
@ -30,32 +30,10 @@ class ModelBackend(object):
groups. groups.
""" """
if not hasattr(user_obj, '_group_perm_cache'): if not hasattr(user_obj, '_group_perm_cache'):
cursor = connection.cursor() perms = Permission.objects.filter(group__user=user_obj
# The SQL below works out to the following, after DB quoting: ).values_list('content_type__app_label', 'codename'
# cursor.execute(""" ).order_by()
# SELECT ct."app_label", p."codename" user_obj._group_perm_cache = set(["%s.%s" % (ct, name) for ct, name in perms])
# FROM "auth_permission" p, "auth_group_permissions" gp, "auth_user_groups" ug, "django_content_type" ct
# WHERE p."id" = gp."permission_id"
# AND gp."group_id" = ug."group_id"
# AND ct."id" = p."content_type_id"
# AND ug."user_id" = %s, [self.id])
qn = connection.ops.quote_name
sql = """
SELECT ct.%s, p.%s
FROM %s p, %s gp, %s ug, %s ct
WHERE p.%s = gp.%s
AND gp.%s = ug.%s
AND ct.%s = p.%s
AND ug.%s = %%s""" % (
qn('app_label'), qn('codename'),
qn('auth_permission'), qn('auth_group_permissions'),
qn('auth_user_groups'), qn('django_content_type'),
qn('id'), qn('permission_id'),
qn('group_id'), qn('group_id'),
qn('id'), qn('content_type_id'),
qn('user_id'),)
cursor.execute(sql, [user_obj.id])
user_obj._group_perm_cache = set(["%s.%s" % (row[0], row[1]) for row in cursor.fetchall()])
return user_obj._group_perm_cache return user_obj._group_perm_cache
def get_all_permissions(self, user_obj): def get_all_permissions(self, user_obj):