lib/mongomodel/concerns/document_parent.rb in mongomodel-0.2.9 vs lib/mongomodel/concerns/document_parent.rb in mongomodel-0.2.10

@@ -1,10 +1,10 @@
 module MongoModel
   module DocumentParent
     extend ActiveSupport::Concern
     
     def parent_document
-      if @_parent_document.respond_to?(:call)
+      if @_parent_document.is_a?(Proc)
         case @_parent_document.arity
         when 0 then @_parent_document.call
         else        @_parent_document.call(self)
         end
       else