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| <?php | |
| /** | |
| * @file | |
| * Contains \Drupal\forum\Breadcrumb\ForumListingBreadcrumbBuilder. | |
| */ | |
| namespace Drupal\forum\Breadcrumb; | |
| use Drupal\Core\Link; | |
| use Drupal\Core\Routing\RouteMatchInterface; | |
| /** | |
| * Provides a breadcrumb builder base class for forum listing pages. | |
| */ | |
| class ForumListingBreadcrumbBuilder extends ForumBreadcrumbBuilderBase { | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function applies(RouteMatchInterface $route_match) { | |
| return $route_match->getRouteName() == 'forum.page' && $route_match->getParameter('taxonomy_term'); | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function build(RouteMatchInterface $route_match) { | |
| $breadcrumb = parent::build($route_match); | |
| $breadcrumb->addCacheContexts(['route']); | |
| // Add all parent forums to breadcrumbs. | |
| /** @var \Drupal\Taxonomy\TermInterface $term */ | |
| $term = $route_match->getParameter('taxonomy_term'); | |
| $term_id = $term->id(); | |
| $breadcrumb->addCacheableDependency($term); | |
| $parents = $this->forumManager->getParents($term_id); | |
| if ($parents) { | |
| foreach (array_reverse($parents) as $parent) { | |
| if ($parent->id() != $term_id) { | |
| $breadcrumb->addCacheableDependency($parent); | |
| $breadcrumb->addLink(Link::createFromRoute($parent->label(), 'forum.page', [ | |
| 'taxonomy_term' => $parent->id(), | |
| ])); | |
| } | |
| } | |
| } | |
| return $breadcrumb; | |
| } | |
| } |