lib/mongoid/relations/builder.rb in mongoid-2.1.0 vs lib/mongoid/relations/builder.rb in mongoid-2.1.1

@@ -35,10 +35,10 @@
       #
       # @since 2.0.0.rc.1
       def query?
         return true unless object.respond_to?(:to_a)
         obj = object.to_a.first
-        !obj.respond_to?(:attributes) && !obj.nil?
+        !obj.is_a?(Mongoid::Document) && !obj.nil?
       end
     end
   end
 end