Php 如何使用Symfony 4更改用户区域设置？

我试图用Symfony从数据库中的字段“locale”更改用户区域设置。我阅读了Symfony手册（例如如何粘贴会话），但在我的应用程序中没有任何功能。Translator仍将获取默认区域设置

我创建了监听器、订阅者。。。动态更改区域设置，但由于它们是在防火墙侦听器之前加载的，因此无法更改当前值

我试图更改优先订户，但丢失了用户实体。我试图在控制器中设置区域设置请求，但我认为为时已晚

我不想在URL中添加区域设置

这里是我的订户-侦听器-代码：

public function onKernelRequest(RequestEvent $event)
{
   $user = $this->tokenStorage->getToken()->getUser();
   $request = $event->getRequest();
   $request->setLocale($user->getLocale());
}  

在订阅服务器中，我添加了：

public static function getSubscribedEvents()
{
   return [
     KernelEvents::REQUEST => [['onKernelRequest', 0]],
   ];
}

这里是我的完整代码：

framework.yml：

default_locale: fr

services.yml：

parameters:
    locale: 'fr'
    app_locales: fr|en|

translation.yml：

framework:
    default_locale: '%locale%'
    translator:
        paths:
            - '%kernel.project_dir%/translations'
        fallbacks:
            - '%locale%'

LocaleSubscriber.php：

namespace App\EventSubscriber;

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

class LocaleSubscriber implements EventSubscriberInterface
{
    private $defaultLocale;

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

    public function onKernelRequest(RequestEvent $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 [
            // must be registered before (i.e. with a higher priority than) the default Locale listener
            KernelEvents::REQUEST => [['onKernelRequest', 20]],
        ];
    }
}

UserLocaleSubscriber.php

// src/EventSubscriber/UserLocaleSubscriber.php
namespace App\EventSubscriber;

use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpFoundation\Session\SessionInterface;
use Symfony\Component\Security\Http\Event\InteractiveLoginEvent;
use Symfony\Component\Security\Http\SecurityEvents;

/**
 * Stores the locale of the user in the session after the
 * login. This can be used by the LocaleSubscriber afterwards.
 */
class UserLocaleSubscriber implements EventSubscriberInterface
{
    private $session;

    public function __construct(SessionInterface $session)
    {
        $this->session = $session;
    }

    public function onInteractiveLogin(InteractiveLoginEvent $event)
    {
        $user = $event->getAuthenticationToken()->getUser();

        if (null !== $user->getLocale()) {
            $this->session->set('_locale', $user->getLocale());
        }
    }

    public static function getSubscribedEvents()
    {
        return [
            SecurityEvents::INTERACTIVE_LOGIN => 'onInteractiveLogin',
        ];
    }
}

Ex控制器注释：

/**
     * @Route("/user/locale", name="user_locale", requirements={"_locale" = "%app.locales%"})
     * @Route("/{_locale}/user/locale", name="user_locale_locale", requirements={"_locale" = "%app.locales%"})
     */

---

如果看不到您使用的完整代码，很难提供帮助

Symfony也有自己的LocaleListener。确保首先执行您的

/**
*@return数组
*/
公共静态函数getSubscribedEvents（）
{
返回[
//必须在默认区域设置侦听器之前注册（即优先级高于）
KernelEvents:：REQUEST=>[['onKernelRequest'，20]]，
];
}

使用

debug:event-kernel.request

查找防火墙侦听器的优先级

确保在防火墙侦听器之后立即执行

UserLocaleSubscriber

自动连接translator接口，并手动设置translator区域设置

---

感谢您的回答，我试图将优先级设置为20、15或17，但令牌存储是空的。Symfony文档中写道：“您可能希望进一步改进此技术，并根据登录用户的用户实体定义区域设置。但是，由于LocaleSubscriber是在FirewallListener之前调用的，FirewallListener负责处理身份验证并在TokenStorage上设置用户令牌，因此您无法访问登录的用户。“即使区域设置存储在会话中，defaultLocale仍然应用。@Alexander将使用类似于此工作的方法：我在会话中丢失区域设置$请求->getSession（）->getLocale（）为空。结果，翻译器获得了备用语言环境。我如何解决这个问题？

// src/EventSubscriber/UserLocaleSubscriber.php
namespace App\EventSubscriber;

use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpFoundation\Session\SessionInterface;
use Symfony\Component\Security\Http\Event\InteractiveLoginEvent;
use Symfony\Component\Security\Http\SecurityEvents;
use Symfony\Contracts\Translation\TranslatorInterface;

/**
 * Stores the locale of the user in the session after the
 * login. This can be used by the LocaleSubscriber afterwards.
 */
class UserLocaleSubscriber implements EventSubscriberInterface
{
    private $session;

    private $translator;

    public function __construct(SessionInterface $session, TranslatorInterface $translator)
    {
        $this->session = $session;
        $this->translator = $translator;
    }

    public function onInteractiveLogin(InteractiveLoginEvent $event)
    {
        $user = $event->getAuthenticationToken()->getUser();

        if (null !== $user->getLocale()) {
            $this->translator->setLocale($user->getLocale());
        }
    }

    public static function getSubscribedEvents()
    {
        return [
            SecurityEvents::INTERACTIVE_LOGIN => ['onInteractiveLogin', 7]
        ];
    }
}