lib/carrierwave/orm/mongoid.rb in locomotive_carrierwave-0.5.4.beta2 vs lib/carrierwave/orm/mongoid.rb in locomotive_carrierwave-0.5.4.beta3

@@ -37,12 +37,14 @@
           begin
             value = __send__(column)
             value = value.duplicable? ? value.clone : value
           rescue TypeError, NoMethodError
           end
-          @modifications[column] = value
+          setup_modifications
 
-          super
+          super.tap do
+            @modifications[column] = [value, __send__(column)]
+          end
         end
 
         def #{column}_changed?
           column = _mounter(:#{column}).serialization_column
           send(:"\#{column}_changed?")