including the listed module

app/models/extensions/page/listed.rb

@@ -0,0 +1,19 @@
+module Models
+  module Extensions
+    module Page
+      module Listed
+        
+        extend ActiveSupport::Concern
+        
+        included do
+          
+          field :listed, :type => Boolean, :default => true
+          
+        end
+        
+      end
+    end
+  end
+end
+
+