<?php 
class AppController extends Controller
{
  
  var $helpers = array('Flash');
  /*
   * Add a message to the messages array in the session like this:
   * $this->flash( 'You are logged in.', 'success' );
   */ 
  function flash( $message, $class = 'status' )
  {
    $old = $this->Session->read('messages');
    $old[$class][] = $message;
    $this->Session->write( 'messages', $old );
  }

}
?>