Create entity on entity flush
You can use an event subscriber for that, and attach it to the ORM event listener (in symfony 2, there's docs about that):
namespace YourApp\Subscriber;use Doctrine\Common\EventSubscriber;use Doctrine\ORM\Event\OnFlushEventArgs;use Doctrine\ORM\Events;use YourApp\Entity\Issue;use YourApp\Entity\IssueLog;class IssueUpdateSubscriber implements EventSubscriber{ public function onFlush(OnFlushEventArgs $args) { $em = $args->getEntityManager(); $uow = $em->getUnitOfWork(); foreach ($uow->getScheduledEntityUpdates() as $updated) { if ($updated instanceof Issue) { $em->persist(new IssueLog($updated)); } } $uow->computeChangeSets(); } public function getSubscribedEvents() { return array(Events::onFlush); }}You can eventually check the changeset as I've explained at Is there a built-in way to get all of the changed/updated fields in a Doctrine 2 entity.
I left the implementation of IssueLog out of the example, since that is up to your own requirements.