Twig do not set the locale in Symfony 3 - php

Question

I created a EventListener to set the locale based on the user preferences, i set the langage like this in my listener:
$request->setLocale($user->getLanguage());
$request->getSession()->set('_locale',$user->getLanguage());
I tried both..
I register the Listener in the service.yml:
app.event_listener.locale:
class: 'AppBundle\EventListener\LocaleListener'
arguments:
- '#security.token_storage'
tags:
- {name: 'kernel.event_listener', event: 'kernel.request', method: 'onKernelRequest'}
I also tried to add a priority: 17 to the service but it does not change anything...
The listener seems to works, i can get the Locale in my controller with a $request->getLocale()(or session).
But Twig is still in the default language I defined in the config.yml:
parameters:
locale: fr
I'm pretty lost now, any tips ?

Answer 1

I tried a lot of stuff (change the priority, check if the locale is passed to the front etc...)
Finally i forced the translator in my EventListener:
public function onKernelRequest(GetResponseEvent $event)
{
$request = $event->getRequest();
if ($this->tokenStorage->getToken()) {
$user = $this->tokenStorage->getToken()->getUser();
if ($user && $user instanceof User) {
$request->setLocale($user->getLanguage());
} elseif ($request->query->has('locale')) {
$request->setLocale($request->query->get('locale'));
} else {
$request->setLocale($request->getPreferredLanguage());
}
}
$this->translator->setLocale($request->getLocale());
}
I don't understand why, this should be done in the Symfony translator, but it works...

Answer 2

You have to set the locale for the translator to get the right translation in templates.
E.g in controller:
$this->get('translator')->setLocale($user->getLanguage());