FIxed #7666: use a bare queryset when accessing single related objects so that the related objects never become inaccessible.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@8017 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/regressiontests/reverse_single_related/models.py

@@ -0,0 +1,43 @@
+"""
+Regression tests for an object that cannot access a single related object due
+to a restrictive default manager.
+"""
+
+from django.db import models
+
+
+class SourceManager(models.Manager):
+    def get_query_set(self):
+        return super(SourceManager, self).get_query_set().filter(is_public=True)
+
+class Source(models.Model):
+    is_public = models.BooleanField()
+    objects = SourceManager()
+
+class Item(models.Model):
+    source = models.ForeignKey(Source)
+
+
+__test__ = {'API_TESTS':"""
+
+>>> public_source = Source.objects.create(is_public=True)
+>>> public_item = Item.objects.create(source=public_source)
+
+>>> private_source = Source.objects.create(is_public=False)
+>>> private_item = Item.objects.create(source=private_source)
+
+Only one source is available via all() due to the custom default manager.
+
+>>> Source.objects.all()
+[<Source: Source object>]
+
+>>> public_item.source
+<Source: Source object>
+
+Make sure that an item can still access its related source even if the default
+manager doesn't normally allow it.
+
+>>> private_item.source
+<Source: Source object>
+
+"""}