You need to import all the dependencies used as User, Request, ViewEvent, KernelEvent, etc.
By the way, is a good practice to import the repository (UserRepository) and not the entityManager, but you dont need it because you have the $user already. You dont need to find it again.
I think this should be enough if you have the user classes in those namespaces (locations):
use Doctrine\ORM\EntityManagerInterface;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpKernel\Event\ViewEvent;
use Symfony\Component\HttpKernel\KernelEvents;
use ApiPlatform\Core\EventListener\EventPriorities;
use App\Entity\User;
final class RegisterMailSubscriber implements EventSubscriberInterface
{
private $mailer;
public function __construct(\Swift_Mailer $mailer)
{
$this->mailer = $mailer;
}
public static function getSubscribedEvents()
{
return [
KernelEvents::VIEW => ['sendMail', EventPriorities::POST_WRITE],
];
}
public function sendMail(ViewEvent $event): void
{
$user = $event->getControllerResult();
$method = $event->getRequest()->getMethod();
if (!$user instanceof User || Request::METHOD_POST !== $method) {
return;
}
$userEmail = $user->getEmail(); //for example. You got the user 5 lines before.
}
}
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