Manage locale with Symfony3 LocaleSubscriber - php

Question

I've some troubles in using locale parameter with Symfony 3. I've tried a lot of things that I've found on Stack, but nothing seems to work.
I've followed the official documentation : https://symfony.com/doc/current/session/locale_sticky_session.html
LocaleSubscriber.php
<?php
namespace AppBundle\EventSubscriber;
use Symfony\Component\HttpKernel\Event\GetResponseEvent;
use Symfony\Component\HttpKernel\KernelEvents;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpKernel\HttpKernel;
class LocaleSubscriber implements EventSubscriberInterface
{
private $defaultLocale;
public function __construct($defaultLocale = 'en')
{
$this->defaultLocale = $defaultLocale;
}
public function onKernelRequest(GetResponseEvent $event)
{
if (HttpKernel::MASTER_REQUEST != $event->getRequestType()) {
return;
}
$request = $event->getRequest();
if (!$request->hasPreviousSession()) {
return;
}
// try to see if the locale has been set as a _locale routing parameter
if ($locale = $request->get('_locale')) {
$request->set('_locale', $locale);
} else {
$request->set('_locale', $this->defaultLocale);
}
}
public static function getSubscribedEvents()
{
return array(
// must be registered after the default Locale listener
KernelEvents::REQUEST => array(array('onKernelRequest', 17)),
);
}
}
config.yml
framework:
#esi: ~
translator: { fallbacks: ['%locale%'] }
service.yml
AppBundle\EventSubscriber\LocaleSubscriber:
arguments: ['%kernel.default_locale%']
tags: [kernel.event_subscriber]
AdminController
namespace AdminBundle\Controller;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Component\HttpFoundation\Request;
class AdminController extends Controller
{
public function homeAction(Request $request)
{
var_dump($request->getLocale());
var_dump($request->get('_locale'));
return $this->render('AdminBundle:home:home.html.twig');
}
}
HTML Links :
<li>FR</li>
<li>EN</li>
Problem : When I try to switch of language, the parameter _locale is changed but the text don't switch language. "testfr" must be "testen" according to my messages.en.yml.
My var_dump when I click on the "FR" link : string(2) "fr" string(2) "fr"
My var_dump when I click on the "EN" link : string(2) "fr" string(2) "en"
I guess it is not normal..
If someone can help me, that would be nice and can remove a headache.
Thanks
Edit : The translator takes the "locale" parameter, which doesn't change when I click on one of theses links. I'm still investigating.

Answer 1

Finally, found the problem :
if (!$request->hasPreviousSession()) {
return;
}
Just comment this part of the code, and all is fine now.