lib/hashme/properties.rb in hashme-0.2.4 vs lib/hashme/properties.rb in hashme-0.2.5

@@ -12,10 +12,15 @@
     end
 
     def set_attribute(name, value)
       property = get_property(name)
       if property
-        self[property.name] = property.build(self, value)
+        value = property.build(self, value)
+        if value.nil?
+          delete(property.name)
+        else
+          self[property.name] = value
+        end
       end
     end
 
     def attributes=(attrs = {})
       set_attributes(attrs)