Symfony Debug to Error Handler Component

Fri, 29 Nov 2019 01:04:31 +0530

Since symfony 4.4 the symfony/debug component is deprecated.

The “\Symfony\Component\Debug\ErrorHandler” class is deprecated since Symfony 4.4, use “\Symfony\Component\ErrorHandler\ErrorHandler”

Running unit tests on Mascot, I noticed lots of warnings.

But it was not easy as changing Symfony\Component\Debug\ExceptionHandler to Symfony\Component\ErrorHandler\ErrorHandler.

Assume we have something as below

<?php
$handler = new \Symfony\Component\Debug\ExceptionHandler($debug);
$exception = $event->getThrowable();
if (!$exception instanceof FlattenException) {
    $exception = FlattenException::create($exception);
}
$response = Response::create($handler->getHtml($exception), $exception->getStatusCode(), $exception->getHeaders())->setCharset(ini_get('default_charset'));
$event->setResponse($response);

The Symfony\Component\ErrorHandler\ErrorHandler has no getHtml method.

From the symfony docs, if you are in development mode we can use below code.

Custom Events in a Symfony2 Bundle

Sun, 11 Oct 2015 00:00:00 +0000

In this tutorial we will create a custom event for symfony2 bundle.

Assuming you have downloaded the symfony-standard distribution to play.

Create HktEventBundle via sensio generator bundle.

1
2

<?php
php app/console generate:bundle --namespace=Hkt/EventBundle --dir src --no-interaction

Create the event class.

<?php
// src/Hkt/EventBundle/Event/PageViewed.php
namespace Hkt\EventBundle\Event;

use Symfony\Component\EventDispatcher\Event;

class PageViewed extends Event
{
    protected $name;

    public function __construct($name)
    {
        $this->name = $name;
    }

    public function getName()
    {
        return $this->name;
    }
}

Add as many methods/properties which are needed from the listener. Instead of creating an event class we can make use of generic event also.

Symfony on Hari KT — Full Stack Developer

Symfony Debug to Error Handler Component

Custom Events in a Symfony2 Bundle