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How to Create a Custom Access Denied Handler

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How to Create a Custom Access Denied Handler¶

When your application throws an AccessDeniedException, you can handle this exception with a service to return a custom response.

Each firewall context can define its own custom access denied handler:

YAML

# app/config/security.yml
firewalls:
    foo:
        # ...
        access_denied_handler: app.security.access_denied_handler

XML

<config>
  <firewall name="foo">
    <access_denied_handler>app.security.access_denied_handler</access_denied_handler>
  </firewall>
</config>

PHP

// app/config/security.php
$container->loadFromExtension('security', array(
    'firewalls' => array(
        'foo' => array(
            // ...
            'access_denied_handler' => 'app.security.access_denied_handler',
        ),
    ),
));

Your handler must implement the Symfony\Component\Security\Http\Authorization\AccessDeniedHandlerInterface. This interface defines one method called handle() that implements the logic to execute when access is denied to the current user (send a mail, log a message, or generally return a custom response):

namespace AppBundle\Security;

use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Security\Core\Exception\AccessDeniedException;
use Symfony\Component\Security\Http\Authorization\AccessDeniedHandlerInterface;

class AccessDeniedHandler implements AccessDeniedHandlerInterface
{
    public function handle(Request $request, AccessDeniedException $accessDeniedException)
    {
        // ...

        return new Response($content, 403);
    }
}

Then, register the service for the access denied handler:

YAML

# app/config/services.yml
services:
    app.security.access_denied_handler:
        class: AppBundle\Security\AccessDeniedHandler

XML

<!-- app/config/services.xml -->
<?xml version="1.0" encoding="UTF-8" ?>
<container xmlns="http://symfony.com/schema/dic/services"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://symfony.com/schema/dic/services
    http://symfony.com/schema/dic/services/services-1.0.xsd">

    <services>
        <service id="app.security.access_denied_handler"
                class="AppBundle\Security\AccessDeniedHandler" />
    </services>
</container>

PHP

// app/config/services.php
$container->register(
    'app.security.access_denied_handler',
    'AppBundle\Security\AccessDeniedHandler'
);

That’s it! Any AccessDeniedException thrown by the foo firewall will now be handled by your service.

This work, including the code samples, is licensed under a Creative Commons BY-SA 3.0 license.