storage = $entity_manager->getStorage('comment'); } /** * {@inheritdoc} */ public function applies(RouteMatchInterface $route_match) { return $route_match->getRouteName() == 'comment.reply' && $route_match->getParameter('entity'); } /** * {@inheritdoc} */ public function build(RouteMatchInterface $route_match) { $breadcrumb = new Breadcrumb(); $breadcrumb->addCacheContexts(['route']); $breadcrumb->addLink(Link::createFromRoute($this->t('Home'), '')); $entity = $route_match->getParameter('entity'); $breadcrumb->addLink(new Link($entity->label(), $entity->urlInfo())); $breadcrumb->addCacheableDependency($entity); if (($pid = $route_match->getParameter('pid')) && ($comment = $this->storage->load($pid))) { /** @var \Drupal\comment\CommentInterface $comment */ $breadcrumb->addCacheableDependency($comment); // Display link to parent comment. // @todo Clean-up permalink in https://www.drupal.org/node/2198041 $breadcrumb->addLink(new Link($comment->getSubject(), $comment->urlInfo())); } return $breadcrumb; } }