Symfony2 and Doctrine - Generate code on insertion - php

Question

Using Symfon2.0 and Doctrine, I am trying to do the following:
Insert a new row in the database
in the moment of inserting, automatically generate a code and also insert it.
That code is related to the ID of the table. Something like <something>/row_id
How can I easily do this?
I've been trying Doctrine Livecycle callbacks. But:
PrePersist still doesn't have the ID.
PostPersist have the ID, but somehow the insertion has already been done and, although I can set any property from the Entity, I don't know how to make it to be persisted "again" to the database.
Any clue overthere?
Any other way to do it properly?

Answer 1

In your create controller:
if ($form->isValid()) {
$em = $this->getDoctrine()->getManager();
$em->persist($entity);
$em->flush();
$entity->setCode($code);
$em->persist($entity);
$em->flush();
return $this->redirect($this->generateUrl('entity_show'
,array('id' => $entity->getId())));
}
The second block ($entity->setCode...) is what you need to add and will need to be customized to suit your purposes
Alternatively, you can use Listeners:
<?php
namespace ormed\ormedBundle\Listener;
use Doctrine\ORM\Event\OnFlushEventArgs; use
Symfony\Component\DependencyInjection\Container;
class LastModifiedListener {
private $container;
public function __construct(Container $container){$this->container = $container;}
public function onFlush(OnFlushEventArgs $eventArgs)
{
$entityManager = $eventArgs->getEntityManager();
$unitOfWork = $entityManager->getUnitOfWork();
foreach ($unitOfWork->getScheduledEntityInsertions() AS $entity) {
$entity->setCode( $code );
$entityManager->persist($entity);
$classMetadata = $entityManager->getClassMetadata(get_class($entity));
$unitOfWork->recomputeSingleEntityChangeSet($classMetadata, $entity);
} } }