Fixed #7378 -- Use the "to_field" where appropriate on reverse relations.

Patch from mturtle@gmail.com. The remaining uses of "%s__pk" in
fields/related.py all look safe, since they are for many-to-many fields, which
doesn't take "to_field" as a parameter.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@7785 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/db/models/fields/related.py

@@ -322,7 +322,9 @@ class ForeignRelatedObjectsDescriptor(object):
                 clear.alters_data = True
 
         manager = RelatedManager()
-        manager.core_filters = {'%s__pk' % rel_field.name: getattr(instance, rel_field.rel.get_related_field().attname)}
+        attname = rel_field.rel.get_related_field().name
+        manager.core_filters = {'%s__%s' % (rel_field.name, attname):
+                getattr(instance, attname)}
         manager.model = self.related.model
 
         return manager

tests/regressiontests/queries/models.py

@@ -368,6 +368,10 @@ Bug #4510
 >>> Author.objects.filter(report__name='r1')
 [<Author: a1>]
 
+Bug #7378
+>>> a1.report_set.all()
+[<Report: r1>]
+
 Bug #5324, #6704
 >>> Item.objects.filter(tags__name='t4')
 [<Item: four>]
@@ -777,8 +781,8 @@ this doesn't crash, it's a Good Thing.
 >>> out = pickle.dumps(Item.objects.all())
 
 Bug #7277
->>> a1 = Annotation.objects.create(name='a1', tag=t1)
->>> a1.notes.add(n1)
+>>> ann1 = Annotation.objects.create(name='a1', tag=t1)
+>>> ann1.notes.add(n1)
 >>> n1.annotation_set.filter(Q(tag=t5) | Q(tag__children=t5) | Q(tag__children__children=t5))
 [<Annotation: a1>]