Modification of the page model

app/helpers/application_helper.rb

@@ -54,9 +54,9 @@ module ApplicationHelper
     if node
       case node._type
         when 'Page'
-          dest = admin_page_path(:id => node.id)
+          dest = admin_page_path(node)
         when 'Link'
-          dest = admin_link_path(:id => node.id)
+          dest = admin_link_path(node)
       end
       ret << "<li>"
       ret << (link_to node.name, dest)