Fix Issue 194.

mongomapper · Sep 2, 2011 · 5957d7e · 5957d7e
1 parent c16b203
commit 5957d7e
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/lib/mongo_mapper/plugins/keys.rb b/lib/mongo_mapper/plugins/keys.rb
@@ -193,7 +193,7 @@ def attributes=(attrs)
 
         def attributes
           HashWithIndifferentAccess.new.tap do |attrs|
-            keys.each_pair do |name, key|
+            keys.select { |name,key| !self[key.name].nil? }.each_pair do |name, key|
               value = key.set(self[key.name])
               attrs[name] = value
             end
@@ -322,3 +322,4 @@ def write_key(name, value)
     end
   end
 end
+