Symfony2在每个请求上存储与用户相关的内容

您可以将您的语言环境存储在会话中，并将其与事件侦听器一起使用。并在用户登录时在会话中设置用户区域设置。

-LocaleListener：将区域设置存储在会话中，将用户区域设置存储在会话中

-UserLocaleListener：在用户登录时，在会话中设置用户区域设置

<?php

namespace YourApp\YourBundle\EventListener;

use Symfony\Component\HttpKernel\Event\GetResponseEvent;

use Symfony\Component\HttpKernel\KernelEvents;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;

class LocaleListener implements EventSubscriberInterface
{
    private $defaultLocale;


    public function __construct($defaultLocale = 'en')
    {
        $this->defaultLocale = $defaultLocale;
    }

    public function onKernelRequest17(GetResponseEvent $event)
    {
        $request = $event->getRequest();
        if (!$request->hasPreviousSession()) {
            return;
        }

        // try to see if the locale has been set as a _locale routing parameter
        if ($locale = $request->attributes->get('_locale')) {
            $request->getSession()->set('_locale', $locale);
        } else {
            // if no explicit locale has been set on this request, use one from the session
            $request->setLocale($request->getSession()->get('_locale', $this->defaultLocale));
        }
    }

    public static function getSubscribedEvents()
    {
        return array(
            // must be registered before the default Locale listener
        KernelEvents::REQUEST => array(array('onKernelRequest17', 17)),
        );
    }
}

二次服务：

<?php

namespace YourApp\YourBundle\EventListener;

use Symfony\Component\HttpFoundation\Session\Session;
use Symfony\Component\Security\Http\Event\InteractiveLoginEvent;
use Symfony\Component\HttpKernel\Event\GetResponseEvent;
use Symfony\Component\HttpKernel\HttpKernelInterface;

class UserLocaleListener
{
    private $session;

    public function setSession(Session $session)
    {
        $this->session = $session;
    }

    /**
     * kernel.request event. If a guest user doesn't have an opened session, locale is equal to
     * "undefined" as configured by default in parameters.ini. If so, set as a locale the user's
     * preferred language.
     *
     * @param \Symfony\Component\HttpKernel\Event\GetResponseEvent $event
     */
    public function setLocaleForUnauthenticatedUser(GetResponseEvent $event)
    {
        if (HttpKernelInterface::MASTER_REQUEST !== $event->getRequestType()) {
            return;
        }
        $request = $event->getRequest();
        if ('undefined' == $request->getLocale()) {
            if ($locale = $request->getSession()->get('_locale')) {
                $request->setLocale($locale);
            } else {
                $request->setLocale($request->getPreferredLanguage());
            }
        }
    }

    /**
     * security.interactive_login event. If a user chose a language in preferences, it would be set,
     * if not, a locale that was set by setLocaleForUnauthenticatedUser remains.
     *
     * @param \Symfony\Component\Security\Http\Event\InteractiveLoginEvent $event
     */
    public function setLocaleForAuthenticatedUser(InteractiveLoginEvent $event)
    {
        $user = $event->getAuthenticationToken()->getUser();

        if ($lang = $user->getLocale()) {
            $event->getRequest()->setLocale($lang);
            $this->session->set('_locale', $lang);
        }
    }

}

services.yml

services:
    yourapp_your.locale_listener:
        class: YourApp\YourBundle\EventListener\LocaleListener
        arguments: ["%kernel.default_locale%"]
        tags:
            - { name: kernel.event_subscriber }

    yourapp_your.locale.interactive_login_listener:
        class: YourApp\YourBundle\EventListener\UserLocaleListener
        calls:
            - [ setSession, [@session] ]
        tags:
            - { name: kernel.event_listener, event: security.interactive_login, method: setLocaleForAuthenticatedUser }

这正在使用

• https://github.com/symfony/symfony/blob/master/UPGRADE-2.1.md#simulate-old-behavior
• 根据要求提供Symfony 2.3语言环境的翻译
• Symfony2语言环境检测：在会话中不考虑_locale
• symfony 2根据存储在数据库中的用户首选项设置区域设置