--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/django/db/models/related.py	Wed Jan 20 00:34:04 2010 +0100
@@ -0,0 +1,46 @@
+class BoundRelatedObject(object):
+    def __init__(self, related_object, field_mapping, original):
+        self.relation = related_object
+        self.field_mappings = field_mapping[related_object.name]
+
+    def template_name(self):
+        raise NotImplementedError
+
+    def __repr__(self):
+        return repr(self.__dict__)
+
+class RelatedObject(object):
+    def __init__(self, parent_model, model, field):
+        self.parent_model = parent_model
+        self.model = model
+        self.opts = model._meta
+        self.field = field
+        self.name = '%s:%s' % (self.opts.app_label, self.opts.module_name)
+        self.var_name = self.opts.object_name.lower()
+
+    def get_db_prep_lookup(self, lookup_type, value):
+        # Defer to the actual field definition for db prep
+        return self.field.get_db_prep_lookup(lookup_type, value)
+
+    def editable_fields(self):
+        "Get the fields in this class that should be edited inline."
+        return [f for f in self.opts.fields + self.opts.many_to_many if f.editable and f != self.field]
+
+    def __repr__(self):
+        return "<RelatedObject: %s related to %s>" % (self.name, self.field.name)
+
+    def bind(self, field_mapping, original, bound_related_object_class=BoundRelatedObject):
+        return bound_related_object_class(self, field_mapping, original)
+
+    def get_accessor_name(self):
+        # This method encapsulates the logic that decides what name to give an
+        # accessor descriptor that retrieves related many-to-one or
+        # many-to-many objects. It uses the lower-cased object_name + "_set",
+        # but this can be overridden with the "related_name" option.
+        if self.field.rel.multiple:
+            # If this is a symmetrical m2m relation on self, there is no reverse accessor.
+            if getattr(self.field.rel, 'symmetrical', False) and self.model == self.parent_model:
+                return None
+            return self.field.rel.related_name or (self.opts.object_name.lower() + '_set')
+        else:
+            return self.field.rel.related_name or (self.opts.object_name.lower())