Finding out what changed via postUpdate listener in Symfony 2.1

Question

I have a postUpdate listener and I\'d like to know what the values were prior to the update and what the values for the DB entry were after the update. Is there a way to do this

Answer 1

Found the solution here. What I needed was actually part of preUpdate(). I needed to call getEntityChangeSet() on the LifecycleEventArgs.

My code:

public function preUpdate(Event\LifecycleEventArgs $eventArgs)
{   
    $changeArray = $eventArgs->getEntityChangeSet();

    //do stuff with the change array

}