Question

IN the symfony2 Docs , they say to use this code

$listener = new AcmeListener();
$dispatcher->addListener('foo.action', array($listener, 'onFooAction'));

I have two questions

1. IN which file do i need to write that line
2. what other events i can write in first arguments like foo.action. i mean is that event buitin or doctrine event or symfony event or custom defined

Answer 1

You have to write in your controller like this

if ($form->isValid()) {
            $em = $this->getDoctrine()->getEntityManager();
            $em->persist($entity);
            $em->flush();


            $dispatcher = $this->container->get('event_dispatcher');
            $dispatcher->dispatch('your.event.name', new YourEvent($entity));

}