Undefined class constant 'EXCEPTION_HANDLER_NOT_FOUND'

Question

Undefined class constant 'EXCEPTION_HANDLER_NOT_FOUND'

riskk21 Feb '20

Created Feb '20	Last Reply May '20	Replies 1	Views 407	Votes 0

riskk21 1.3k

Feb '20

<?php
use Phalcon\Events\Event;
use Phalcon\Dispatcher;
use Phalcon\Mvc\Dispatcher\Exception as DispatcherException;

$evManager->attach(
            'dispatch:beforeException',
            function($event, $dispatcher, $exception)
            {   
                switch ($exception->getCode()) {
                    case MvcDispatcher::EXCEPTION_HANDLER_NOT_FOUND:
                    case MvcDispatcher::EXCEPTION_ACTION_NOT_FOUND:
                        $MvcDispatcher->forward(
                            array(
                                'namespace' => 'Controllers',
                                'controller' => 'No',
                                'action'     => 'index',
                            )
                        );
                        return false;
                }
            }
        );

Get error Undefined class constant 'EXCEPTION_HANDLER_NOT_FOUND'

riskk21
1.3k

Accepted
answer

Feb '20

If none of the routes, specified in the router, match, you can define a 404 controller/action by using the notFound method.

<?php

$router->notFound(
    [
        'controller' => 'index',
        'action'     => 'fourOhFour',
    ]
);

NOTE: This will only work if the router was created without default routes: $router = Phalcon\Mvc\Router(false);

Gerry Ntabuhashe · Answer 1 · 2020-05-31T15:02:02-07:00

I guess this issue happened after an upgrade to 4.x from 3.x

The exceptions constants have been moved from Phalcon\Dispatcher. Now they are available here Phalcon\Dispatcher\Exception.

If you want to keep the logic of your initial implementation you can use it as following. (I'm modifying your code


use Phalcon\Events\Event;
use Phalcon\Dispatcher;
use Phalcon\Dispatcher\Exception as DispatcherException;

$evManager->attach(
            'dispatch:beforeException',
            function($event, $dispatcher, $exception)
            {   
                switch ($exception->getCode()) {
                    case DispatcherException::EXCEPTION_HANDLER_NOT_FOUND:
                    case DispatcherException::EXCEPTION_ACTION_NOT_FOUND:
                        $dispatcher->forward(
                            array(
                                'namespace' => 'Controllers',
                                'controller' => 'No',
                                'action'     => 'index',
                            )
                        );
                        return false;
                }
            }
        );

I was facing the same issue, and that's how i managed to fix it. This information have been found in the doc.

https://docs.phalcon.io/4.0/fr-fr/api/phalcon_dispatcher#dispatcher-exception