问如何在Phalcon中设置404页面

EN

use \Phalcon\Mvc\Dispatcher as PhDispatcher;

$di->set(
    'dispatcher',
    function() use ($di) {

        $evManager = $di->getShared('eventsManager');

        $evManager->attach(
            "dispatch:beforeException",
            function($event, $dispatcher, $exception)
            {
                switch ($exception->getCode()) {
                    case PhDispatcher::EXCEPTION_HANDLER_NOT_FOUND:
                    case PhDispatcher::EXCEPTION_ACTION_NOT_FOUND:
                        $dispatcher->forward(
                            array(
                                'controller' => 'error',
                                'action'     => 'show404',
                            )
                        );
                        return false;
                }
            }
        );
        $dispatcher = new PhDispatcher();
        $dispatcher->setEventsManager($evManager);
        return $dispatcher;
    },
    true
);

<?php

/**
 * ErrorController 
 */
class ErrorController extends \Phalcon\Mvc\Controller
{
    public function show404Action()
    {
        $this->response->setStatusCode(404, 'Not Found');
        $this->view->pick('404/404');
    }
}

<div align="center" id="fourohfour">
    <div class="sub-content">
        <strong>ERROR 404</strong>
        <br />
        <br />
        You have tried to access a page which does not exist or has been moved.
        <br />
        <br />
        Please click the links at the top navigation bar to 
        navigate to other parts of the site, or
        if you wish to contact us, there is information in the About page.
        <br />
        <br />
        [ERROR]
    </div>
</div>

$router->notFound(array(
    "controller" => "index",
    "action" => "route404"
));

class ErrorController extends ControllerBase
{
     public function error404Action()
    {
        $this->response->setHeader('HTTP/1.0 404','Not Found');
        // $this->response->setHeader(404, 'Not Found'); <- did not work
    }
}

class IndexController extends ControllerBase
{
    public function indexAction()
    {
        $id = (int)$this->getId($param);
        if ($id > 0) {

           // do you stuff
        } else {
           $this->dispatcher->forward(array(
               'controller' => 'error', 'action' =>   'error404')
           );
        }
    }
}