Ticket #11448: clear_related_cache.diff

django/db/models/fields/related.py

@@ -743 +743 @@
-        cls._meta.duplicate_targets[self.column] = (target, "o2m")
-
-    def contribute_to_related_class(self, cls, related):
+        try:
+            del(cls._meta._related_objects_cache)
+        except AttributeError:
+            pass
-        setattr(cls, related.get_accessor_name(), ForeignRelatedObjectsDescriptor(related))
-
-    def formfield(self, **kwargs):
@@ -782 +786 @@
-        super(OneToOneField, self).__init__(to, to_field, OneToOneRel, **kwargs)
-
-    def contribute_to_related_class(self, cls, related):
+        try:
+            del(cls._meta._related_objects_cache)
+        except AttributeError:
+            pass
-        setattr(cls, related.get_accessor_name(),
-                SingleRelatedObjectDescriptor(related))
-
@@ -948 +956 @@
-    def contribute_to_related_class(self, cls, related):
-        # m2m relations to self do not have a ManyRelatedObjectsDescriptor,
-        # as it would be redundant - unless the field is non-symmetrical.
+        try:
+            del(cls._meta._related_many_to_many_cache)
+        except AttributeError:
+            pass
-        if related.model != related.parent_model or not self.rel.symmetrical:
-            # Add the descriptor for the m2m relation
-            setattr(cls, related.get_accessor_name(), ManyRelatedObjectsDescriptor(related))