vendor/symfony/http-kernel/EventListener/DisallowRobotsIndexingListener.php line 27
<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\HttpKernel\EventListener;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpKernel\Event\ResponseEvent;
use Symfony\Component\HttpKernel\KernelEvents;
/**
* Ensures that the application is not indexed by search engines.
*
* @author Gary PEGEOT <garypegeot@gmail.com>
*/
class DisallowRobotsIndexingListener implements EventSubscriberInterface
{
private const HEADER_NAME = 'X-Robots-Tag';
public function onResponse(ResponseEvent $event): void
{
// if (!$event->getResponse()->headers->has(static::HEADER_NAME)) {
// $event->getResponse()->headers->set(static::HEADER_NAME, 'noindex');
// }
}
public static function getSubscribedEvents(): array
{
return [
KernelEvents::RESPONSE => ['onResponse', -255],
];
}
}