src/EventSubscriber/CommentNotificationSubscriber.php line 49

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  1. <?php
  3. /*
  4.  * This file is part of the Symfony package.
  5.  *
  6.  * (c) Fabien Potencier <fabien@symfony.com>
  7.  *
  8.  * For the full copyright and license information, please view the LICENSE
  9.  * file that was distributed with this source code.
  10.  */
  12. namespace App\EventSubscriber;
  14. use App\Entity\Comment;
  15. use App\Event\CommentCreatedEvent;
  16. use Symfony\Component\EventDispatcher\EventSubscriberInterface;
  17. use Symfony\Component\Mailer\MailerInterface;
  18. use Symfony\Component\Mime\Email;
  19. use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
  20. use Symfony\Contracts\Translation\TranslatorInterface;
  22. /**
  23.  * Notifies post's author about new comments.
  24.  *
  25.  * @author Oleg Voronkovich <oleg-voronkovich@yandex.ru>
  26.  */
  27. class CommentNotificationSubscriber implements EventSubscriberInterface
  28. {
  29.     private $mailer;
  30.     private $translator;
  31.     private $urlGenerator;
  32.     private $sender;
  34.     public function __construct(MailerInterface $mailer, UrlGeneratorInterface $urlGenerator, TranslatorInterface $translator, string $sender)
  35.     {
  36.         $this->mailer = $mailer;
  37.         $this->urlGenerator = $urlGenerator;
  38.         $this->translator = $translator;
  39.         $this->sender = $sender;
  40.     }
  42.     public static function getSubscribedEvents(): array
  43.     {
  44.         return [
  45.             CommentCreatedEvent::class => 'onCommentCreated',
  46.         ];
  47.     }
  49.     public function onCommentCreated(CommentCreatedEvent $event): void
  50.     {
  51.         /** @var Comment $comment */
  52.         $comment = $event->getComment();
  53.         $post = $comment->getPost();
  55.         $linkToPost = $this->urlGenerator->generate('blog_post', [
  56.             'slug' => $post->getSlug(),
  57.             '_fragment' => 'comment_'.$comment->getId(),
  58.         ], UrlGeneratorInterface::ABSOLUTE_URL);
  60.         $subject = $this->translator->trans('notification.comment_created');
  61.         $body = $this->translator->trans('notification.comment_created.description', [
  62.             '%title%' => $post->getTitle(),
  63.             '%link%' => $linkToPost,
  64.         ]);
  66.         // See https://symfony.com/doc/current/mailer.html
  67.         $email = (new Email())
  68.             ->from($this->sender)
  69.             ->to($post->getAuthor()->getEmail())
  70.             ->subject($subject)
  71.             ->html($body)
  72.         ;
  74.         // In config/packages/dev/mailer.yaml the delivery of messages is disabled.
  75.         // That's why in the development environment you won't actually receive any email.
  76.         // However, you can inspect the contents of those unsent emails using the debug toolbar.
  77.         $this->mailer->send($email);
  78.     }
  79. }