How can i get entityManager inside Subscriber in Symfony - php

Question

I use Api Platform. I have subscriber
namespace App\EventSubscriber\Api;
use ApiPlatform\Core\EventListener\EventPriorities;
use App\Entity\Product;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpKernel\Event\GetResponseForControllerResultEvent;
use Symfony\Component\HttpKernel\KernelEvents;
final class ProductCreateSubscriber implements EventSubscriberInterface
{
public static function getSubscribedEvents()
{
return [
KernelEvents::VIEW => ['createHost', EventPriorities::POST_WRITE],
];
}
public function createHost(GetResponseForControllerResultEvent $event)
{
$product = $event->getControllerResult();
$method = $event->getRequest()->getMethod();
if (!$product instanceof Product || Request::METHOD_POST !== $method) {
return;
}
I NEED ENTITY MANAGER HERE
}
}
Is it possible to get a entity manager here?
I need create another entity, after creating Product

Answer 1

Symfony allow (and recommend) to inject dependencies in services.
We add a constructor to the subscriber in order to inject Doctrine and make it accessible though $this->entityManager:
use Doctrine\ORM\EntityManagerInterface;
final class ProductCreateSubscriber implements EventSubscriberInterface
{
/**
* #var EntityManagerInterface
*/
private $entityManager;
public function __construct(
EntityManagerInterface $entityManager
) {
$this->entityManager = $entityManager;
}
public function createHost(GetResponseForControllerResultEvent $event)
{
$product = $event->getControllerResult();
$method = $event->getRequest()->getMethod();
if (!$product instanceof Product || Request::METHOD_POST !== $method) {
return;
}
// You can access to the entity manager
$this->entityManager->persist($myObject);
$this->entityManager->flush();
}
If autowiring is enabled, you'll have nothing else to do, the service will be instantiated automatically.
If not, you'll have to declare the service:
App\EventSubscriber\Api\ProductCreateSubscriber:
arguments:
- '#doctrine.orm.entity_manager'