How to take locales for routes from the database?

Question

symfony

https://symfony.com/doc/current/routing/service_co...
However, if the admin can change which locales? For example, if he adds a new locale?

# config/services.yaml
parameters:
    app.locales: en|es // а мои локали идет из БД

Answer 1

As Minifets said , it’s difficult to do this through routing, it’s easier through event_dispatcher:

class SiteController
{
    /**
     * @Route(path="/{_locale}/", name="index_locale")
     * @Route(path="/", name="index")
     */
    public function indexAction(Request $request)
    {
        return new Response($request->getLocale());
    }
}

namespace App\EventSubscriber;

use App\LocaleProvider;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpKernel\Event\GetResponseEvent;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
use Symfony\Component\HttpKernel\KernelEvents;

class LocaleSubscriber implements EventSubscriberInterface
{
    /**
     * @var LocaleProvider
     */
    private $localeProvider;

    public function __construct(LocaleProvider $localeProvider)
    {
        $this->localeProvider = $localeProvider;
    }

    /**
     * @inheritDoc
     */
    public static function getSubscribedEvents()
    {
        return [
            KernelEvents::REQUEST => 'onKernelRequest',
        ];
    }

    public function onKernelRequest(GetResponseEvent $event)
    {
        if (!$event->isMasterRequest()) {
            return;
        }

        $request = $event->getRequest();

        if (!in_array($request->getLocale(), $this->localeProvider->getLocales())) {
            throw new NotFoundHttpException(sprintf('Unknown locale %s', $request->getLocale()));
        }
    }
}

namespace App;

class LocaleProvider
{
    public function getLocales()
    {
        return ['ru', 'en'];
    }
}

PS: Might come in handy: https://github.com/lunetics/LocaleBundle