I want to create custom events called user_logged so that i can attach my listeners to those events.
I want to execute few functions whenever user has logged in.
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2 Answers
Create a class which extends Symfony\Component\EventDispatcher\Event.
Then, use the event dispatcher service to dispatch the event:
$eventDispatcher = $container->get('event_dispatcher');
$eventDispatcher->dispatch('custom.event.identifier', $event);
You can register your event listener service like so:
tags:
- { name: kernel.event_listener, event: custom.event.identifier, method: onCustomEvent }
5 Comments
gview
Good answer. In addition, there are more details here: symfony.com/doc/current/components/event_dispatcher/…
Lusitanian
Indeed, but this is a simple enough way to get started.
Nico
excellent answer!!, now the only question is where is the best place to dispatch a custom event?, maybe a service?
tomazahlin
Events are usually dispatched in controllers, but can be also in dispatched in services if you need.
Mirage
Using the
event_dispatcher service worked for me! I used $dispatcher = new EventDispatcher; but that did not fire my event for some reason.This answer is little bit extend answer.
services.yml
custom.event.home_page_event:
class: AppBundle\EventSubscriber\HomePageEventSubscriber
tags:
- { name: kernel.event_listener, event: custom.event.home_page_event, method: onCustomEvent }
AppBundle/EventSubscriber/HomePageEventSubscriber.php
namespace AppBundle\EventSubscriber;
class HomePageEventSubscriber
{
public function onCustomEvent($event)
{
var_dump($event->getCode());
}
}
AppBundle/Event/HomePageEvent.php
namespace AppBundle\Event;
use Symfony\Component\EventDispatcher\Event;
class HomePageEvent extends Event
{
private $code;
public function setCode($code)
{
$this->code = $code;
}
public function getCode()
{
return $this->code;
}
}
anywhere you wish, for example in home page controller
use AppBundle\Event\HomePageEvent;
// ...
$eventDispatcher = $this->get('event_dispatcher');
$event = new HomePageEvent();
$event->setCode(200);
$eventDispatcher->dispatch('custom.event.home_page_event', $event);
