vendor/contao/core-bundle/src/Controller/RobotsTxtController.php line 61

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  1. <?php
  3. declare(strict_types=1);
  5. /*
  6.  * This file is part of Contao.
  7.  *
  8.  * (c) Leo Feyer
  9.  *
  10.  * @license LGPL-3.0-or-later
  11.  */
  13. namespace Contao\CoreBundle\Controller;
  15. use Contao\CoreBundle\Event\ContaoCoreEvents;
  16. use Contao\CoreBundle\Event\RobotsTxtEvent;
  17. use Contao\CoreBundle\Framework\ContaoFramework;
  18. use Contao\PageModel;
  19. use Symfony\Component\EventDispatcher\EventDispatcherInterface;
  20. use Symfony\Component\HttpFoundation\Request;
  21. use Symfony\Component\HttpFoundation\Response;
  22. use Symfony\Component\Routing\Annotation\Route;
  23. use webignition\RobotsTxt\File\Parser;
  25. /**
  26.  * @Route(defaults={"_scope" = "frontend"})
  27.  *
  28.  * @internal
  29.  */
  30. class RobotsTxtController
  31. {
  32.     /**
  33.      * @var ContaoFramework
  34.      */
  35.     private $contaoFramework;
  37.     /**
  38.      * @var EventDispatcherInterface
  39.      */
  40.     private $eventDispatcher;
  42.     public function __construct(ContaoFramework $contaoFramework, EventDispatcherInterface $eventDispatcher)
  43.     {
  44.         $this->contaoFramework = $contaoFramework;
  45.         $this->eventDispatcher = $eventDispatcher;
  46.     }
  48.     /**
  49.      * @Route("/robots.txt")
  50.      */
  51.     public function __invoke(Request $request): Response
  52.     {
  53.         $this->contaoFramework->initialize();
  55.         /** @var PageModel $pageModel */
  56.         $pageModel = $this->contaoFramework->getAdapter(PageModel::class);
  58.         /** @var PageModel|null $rootPage */
  59.         $rootPage = $pageModel->findPublishedFallbackByHostname(
  60.             $request->server->get('HTTP_HOST'),
  61.             ['fallbackToEmpty' => true]
  62.         );
  64.         if (null === $rootPage) {
  65.             return new Response('', Response::HTTP_NOT_FOUND);
  66.         }
  68.         $parser = new Parser();
  69.         $parser->setSource((string) $rootPage->robotsTxt);
  70.         $file = $parser->getFile();
  72.         $this->eventDispatcher->dispatch(new RobotsTxtEvent($file, $request, $rootPage), ContaoCoreEvents::ROBOTS_TXT);
  74.         return new Response((string) $file, 200, ['Content-Type' => 'text/plain; charset=UTF-8']);
  75.     }
  76. }