如何使用内部处理程序将用户注销到Symfony 2应用程序 [英] How to log user out of Symfony 2 application using it's internal handlers

问题描述

Symfony实现了注销用户并杀死cookie的功能.有一个LogoutListener会将这些操作委派给几个注销处理程序:CookieClearingLogoutHandler和SessionLogoutHandler.

Symfony implements the functionality of logging user out and killing cookies. There is a LogoutListener which delegates those action to couple of logout handlers: CookieClearingLogoutHandler and SessionLogoutHandler.

如果我们想手动使用户退出应用程序，我认为最好的做法是调用那些处理程序，而不要自己实现(复制)这样的低级逻辑.

If we want to log user out of application manually, I think the best course of action would be to call those handlers and not to implement (duplicate) such low-level logic yourself.

有可能这样做吗?

推荐答案

您可以通过覆盖默认的security.logout_listener服务来实现扩展的注销侦听器.

You can implement an extended logout-listener by overriding the default security.logout_listener service.

默认的LogoutListener::requiresLogin(...)方法仅检查请求路径是否等于防火墙的logout_path设置.

The default LogoutListener::requiresLogin(...) method only checks if the request-path equals a firewall's logout_path setting.

它看起来像这样:

protected function requiresLogout(Request $request)
{
    return $this->httpUtils->checkRequestPath(
        $request, $this->options['logout_path']
    );
}

---

现在让我们假设如果会话参数logout设置为true，则要执行注销.

---

Now let's assume you want to perform a logout if the session-parameter logout is set to true.

因此，我们扩展了LogoutListener类，并添加了带有其他逻辑的自定义requiresLogout()方法.

Therefore we extend the LogoutListener class and add our custom requiresLogout() method with additional logic.

namespace Your\Name\Space;

use Symfony\Component\Security\Http\Firewall\LogoutListener;
use Symfony\Component\HttpFoundation\Session\SessionInterface;

class MyLogoutListener extends LogoutListener {

    /**
     * Whether this request is asking for logout.
     *
     * @param Request $request
     *
     * @return Boolean
     */ 
    protected function requiresLogout(Request $request)
    {
        if ( $request->getSession()->get('logout') ) {
            return true;
        }

        return parent::requiresLogout($request);
    }

然后，我们只需在 config.yml 中使用我们的自定义类覆盖security.logout_listener.class容器参数.

Afterwards we simply override thesecurity.logout_listener.class container-parameter with our custom class in our config.yml .

parameters:
    security.logout_listener.class: \Your\Name\Space\MyLogoutListener

现在您可以像这样在...Controller中注销用户:

Now you can logout a user inside a ...Controller like this:

 public function someAction(Request $request) { 

     // ... some logic here

     if ($condition) {      
         $request->getSession()->set('logout', true);
     }
 }

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