lib/mongomodel/concerns/attribute_methods/dirty.rb in mongomodel-0.2.2 vs lib/mongomodel/concerns/attribute_methods/dirty.rb in mongomodel-0.2.3

@@ -14,10 +14,10 @@
         attributes.merge(changed_attributes)
       end
       
       # Wrap write_attribute to remember original attribute value.
       def write_attribute(attr, value)
-        attr = attr.to_sym
+        attr = attr.to_s
           
         # The attribute already has an unsaved change.
         if changed_attributes.include?(attr)
           old = changed_attributes[attr]
           changed_attributes.delete(attr) if value == old