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Install

composer require symplify/symfony-event-dispatcher

Register the extension in config.neon:

# app/config/config.neon

extensions:
- Symplify\SymfonyEventDispatcher\Adapter\Nette\DI\SymfonyEventDispatcherExtension

Usage

See short article about EventDispatcher. This article is tested – it will be still up-to-date with Symfony 4+.

1. Create class that implements Symfony\Component\EventDispatcher\SubscriberInterface:

// app/EventSubscriber/CheckRequestEventSubscriber.php

namespace App\EventSubscriber;

use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpKernel\KernelEvents;
use Symfony\Component\HttpKernel\Event\GetResponseEvent

final class CheckRequestEventSubscriber implements EventSubscriberInterface
{
 /**
 * @var bool
 */
 public $isUserNotified = false;

 public static function getSubscribedEvents(): array
 {
 // in format ['event name' => 'public function name that will be called']
 return [KernelEvents::REQUEST => 'validateRequest'];
 }


 // Appropriate event object is passed in arguments
 public function validateRequest(GetResponseEvent $event): void
 {
 // some logic to send notification
 $this->isUserNotified = true;
 }
}

2. Register it to services

# app/config/config.neon

services:
 - App\EventSubscriber\CheckRequestEventSubscriber

And it works :)

That's all!

Contributing

Send issue or pull-request to main repository.