为已定义的路由添加条件例外 [英] Add a conditional exception for a defined route

问题描述

我想拒绝对已在数据库中将标志设置为true的成员的已定义路由的访问。因此，例如，我可以为每个动作添加一个开始条件，例如：

I want to deny the access for a defined route, to members that has a flag set to true in the database. So for example, I could add a starting condition to each action like:

    if ( $this->getUser()->HasPowers() ) {
        throw new AccessDeniedException;
    }

但是有太多的动作和与路径匹配的不同控制器被拒绝。

but there are too many actions and different controllers that match routes to be denied.

因此，我正在考虑创建一条新的路线（重复路线），该路线将在执行其他任何操作之前执行该操作（如果需要则执行此操作）。可能吗？

So I'm thinking about creating a new route(repeated) which will execute that action(deny if it has to do so), before any other action. Is it possible?

推荐答案

在过滤器执行此操作之前。请阅读文档：之前

Before filter should do the trick. Please read documentation: Before filters with the kernel.controller Event.

如果您有很多路由/控制器，或者您不喜欢实现接口，则可以简单地实现事件监听器对于 kernel.request 事件：

If you have a lot of routes/controllers or you don't like implement interfaces you could simply implement event listener for kernel.request event:

# app/config/config.yml
services:
    before_controller.listener:
        class: Acme\DemoBundle\EventListener\BeforeController
        calls:
            - [ setSecurityContext, [ "@security.context" ]]
            - [ setRouter, [ "@router" ]]
        tags:
            - { name: kernel.event_listener, event: kernel.request, method: onKernelRequest }

接下来，实现侦听器：

# src\Acme\DemoBundle\EventListener;
namespace Acme\DemoBundle\EventListener;

use Symfony\Component\HttpFoundation\RedirectResponse;
use Symfony\Bundle\FrameworkBundle\Routing\Router;
use Symfony\Component\Security\Core\SecurityContext;

class BeforeController {
    protected $securityContext;

    protected $router;

    public function setRouter(Router $router){
        $this->router = $router;
    }

    public function setSecurityContext(SecurityContext $securityContext){
        $this->securityContext = $securityContext;
    }

    public function onKernelRequest(GetResponseEvent $event){
        if (!$this->securityContext->getToken()) {
            return;
        }

        $isUser = $this->securityContext->isGranted('ROLE_USER');

        if (!$isUser) {
            return;
        }

        $user = $this->securityContext->getToken()->getUser();

        if ($user->hasSomeFlag()) {
            $redirectUrl = $this->router->generate('some_route');
            $event->setResponse(new RedirectResponse($redirectUrl));
        }
    }
}

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