Symfony Profiler

<?php
namespace App\EventSubscriber;
use App\Repository\UsersRepository;
use Twig\Environment;
use Symfony\Component\Security\Core\Security;
use Symfony\Component\HttpKernel\KernelEvents;
use Symfony\Component\HttpKernel\Event\RequestEvent;
use Symfony\Contracts\Translation\TranslatorInterface;
use Symfony\Component\HttpKernel\Event\ControllerEvent;
use Symfony\Component\HttpFoundation\Session\SessionInterface;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
class LocaleSubscriber implements EventSubscriberInterface
{
private $translator;
private $session;
private $environment;
public function __construct(TranslatorInterface $translator, SessionInterface $session, Environment $environment,
private Security $security,
private UsersRepository $usersRepository
)
{
$this->translator = $translator;
$this->session = $session;
$this->environment = $environment;
}
public function onKernelController(ControllerEvent $event)
{
$request = $event->getRequest();
$locale = $request->query->get('lang');
$user = $this->security->getUser();
if ($locale == null) {
$locale = $user?->getLang() ?? $request->getSession()->get('lang');
}
if ($locale != null) {
$request->setLocale($locale);
$this->translator->setLocale($locale);
// Optionally persist the locale for the user's session:
$request->getSession()->set('lang', $locale);
if($user && $user->getLang() != $locale){
$this->usersRepository->changeLang($user,$locale);
}
}
}
public static function getSubscribedEvents()
{
return [
KernelEvents::CONTROLLER => 'onKernelController',
];
}
}

src/EventSubscriber/LocaleSubscriber.php line 37