Fixed #6957 -- Removed a stray reference to QuerySet._select_related and added

a way to copy the select_related() settings from an existing queryset.


git-svn-id: http://code.djangoproject.com/svn/django/branches/queryset-refactor@7425 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/contrib/admin/views/main.py

@@ -750,8 +750,7 @@ class ChangeList(object):
             for bit in self.query.split():
                 or_queries = [models.Q(**{construct_search(field_name): bit}) for field_name in self.lookup_opts.admin.search_fields]
                 other_qs = QuerySet(self.model)
-                if qs._select_related:
-                    other_qs = other_qs.select_related()
+                other_qs.dup_select_related(qs)
                 other_qs = other_qs.filter(reduce(operator.or_, or_queries))
                 qs = qs & other_qs
 

django/db/models/query.py

@@ -402,6 +402,13 @@ class _QuerySet(object):
             obj.query.max_depth = depth
         return obj
 
+    def dup_select_related(self, other):
+        """
+        Copies the related selection status from the queryset 'other' to the
+        current queryset.
+        """
+        self.query.select_related = other.query.select_related
+
     def order_by(self, *field_names):
         """Returns a new QuerySet instance with the ordering changed."""
         assert self.query.can_filter(), \