lib/models.rb in cachai-0.2.7 vs lib/models.rb in cachai-0.2.8

@@ -131,9 +131,13 @@
     scope :comment, lambda { where(:response_type => 'comment') }
     scope :pingback, lambda { where(:response_type => 'pingback') }
     scope :top_level, lambda { where(:parent_id => 0) }
     scope :nested, lambda { where("parent_id != 0") }
 
+    def parent
+      @parent ||= Response.find(parent_id) rescue nil
+    end
+
     def as_json(options = {})
       {
         :id           => id,
         :author_name  => author_name,
         # :author_email => author_email,