How to enable 'admin_' prefixed routes in Lithium

action.php

<?php

/* ----- snip (omitting everything already in config/bootstrap/action.php) ----- */

/**
 * Filter to capture any admin-specific requests
 * This simply updates the internal action name for dispatching purposes. In order for this to
 * properly work across the board, you'll need to enable a persistent param for `admin` in your 
 * routes configuration. Something to the effect of the following will do nicely:
 * 
 * {{{
 * Router::connect(
 *     '/admin/{:controller}/{:action}/{:args}',
 *     array('admin' => true),
 *     array('persist' => array('admin', 'controller'))
 * );
 * }}}
 */
 
Dispatcher::config(array(
    'rules' => array('admin' => array('action' => 'admin_{:action}'))
));

routes.php

<?php

/* ----- snip (omitting everything already in config/routes.php) ----- */

/**
 * Admin Routes
 */
Router::connect(
    '/admin/{:controller}/{:action}/{:args}',
    array('admin' => true),
    array('persist' => array('admin', 'controller'))
);