Raphaël G. Git Repositories - airbundle/blob - EventSubscriber/LocaleSubscriber.php

   1 <?php
   2
   3 namespace Rapsys\AirBundle\EventSubscriber;
   4
   5 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
   6 use Symfony\Component\HttpKernel\Event\RequestEvent;
   7 use Symfony\Component\HttpKernel\KernelEvents;
   8 use Symfony\Component\HttpFoundation\RedirectResponse;
   9 use Symfony\Component\Routing\RouterInterface;
  10
  11 class LocaleSubscriber implements EventSubscriberInterface {
  12         private $locales;
  13         private $router;
  14
  15         public function __construct(RouterInterface $router, array $locales = ['en']) {
  16                 $this->locales = $locales;
  17                 $this->router = $router;
  18         }
  19
  20         public function onKernelRequest(RequestEvent $event) {
  21                 //Retrieve request
  22                 $request = $event->getRequest();
  23
  24                 //Check for session
  25                 //XXX: people blocking cookies will be stuck to preferred language version
  26                 if (!$request->hasPreviousSession()) {
  27                         //Get preferred language
  28                         //XXX: default language is unused, it will return locales[0] if everything fail
  29                         $preferred = $request->getPreferredLanguage($this->locales);
  30
  31                         //Check if preferred language differs from current request locale
  32                         if ($preferred != $request->getLocale()) {
  33                                 //Save preferred locale in session
  34                                 $request->getSession()->set('_locale', $preferred);
  35
  36                                 //Generate current route with preferred language
  37                                 //XXX: may trigger a Symfony\Component\Routing\Exception\RouteNotFoundException if route is not found for preferred locale
  38                                 $uri = $this->router->generate(
  39                                         //Current route
  40                                         $request->get('_route'),
  41                                         //Force preferred locale
  42                                         ['_locale' => $preferred]+$request->get('_route_params')
  43                                 );
  44
  45                                 //Regenerate route with preferred locale
  46                                 $event->setResponse(new RedirectResponse($uri, 302));
  47
  48                                 //End process
  49                                 return;
  50                         }
  51                 }
  52         }
  53
  54         public static function getSubscribedEvents() {
  55                 return [
  56                         // must be registered before the default locale listener
  57                         KernelEvents::REQUEST => [['onKernelRequest', 10]]
  58                 ];
  59         }
  60 }