Checking which event was fired in Event Subscriber - symfony

Question

When I insert data into User entity, subscriber below gets fired for pre and post events so I get two records inserted into Dummy entity which is fine up to here. What I need to know is, how can I check which event was fired so that I can use it in setHow() method?
$dummy->setHow(......);
Expected result in Dummy table:
id createdOn how
1 2014-10-16 12:12:00 prePersist
2 2014-10-16 12:12:01 postPersist
Subscriber:
class UserPost implements EventSubscriber
{
public function getSubscribedEvents()
{
return array('prePersist', 'postPersist');
}
public function prePersist(LifecycleEventArgs $args)
{
$this->index($args);
}
public function postPersist(LifecycleEventArgs $args)
{
$this->index($args);
}
public function index(LifecycleEventArgs $args)
{
$em = $args->getEntityManager();
$entity = $args->getEntity();
if ($entity instanceof User) {
$dummy = new Dummy();
$dummy->setCreatedOn(new \DateTime('now'));
$dummy->setHow(.............);
$em->persist($dummy);
$em->flush();
}
}
}
Service:
Service:
entity.subscriber.user_post:
class: Site\MainBundle\EventSubscriber\Entity\UserPost
tags:
- { name: doctrine.event_subscriber }

Answer 1

You can just pass the name of the event in the method call like..
public function prePersist(LifecycleEventArgs $args)
{
$this->index($args, 'prePersist');
}
public function postPersist(LifecycleEventArgs $args)
{
$this->index($args, 'postPersist');
}
public function index(LifecycleEventArgs $args, $event)
{
...
if ($entity instanceof User) {
$dummy = new Dummy();
$dummy->setCreatedOn(new \DateTime('now'));
$dummy->setHow($event);
...
}
}