Merge with sub_roles

app/models/user/attribute_value.rb

@@ -5,6 +5,11 @@ class AttributeValue
   
   field :key
   
-  belongs_to :user_attribute
+  belongs_to :attribute_field
+  belongs_to :user
+  
+  def method_missing(field)
+    self[field]
+  end
   
 end