ForumListingBreadcrumbBuilder.php in Zircon Profile 8

Contains \Drupal\forum\Breadcrumb\ForumListingBreadcrumbBuilder.

Namespace

Drupal\forum\Breadcrumb

File

core/modules/forum/src/Breadcrumb/ForumListingBreadcrumbBuilder.php

<?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;
  }

}

Classes

Name	Description
ForumListingBreadcrumbBuilder	Provides a breadcrumb builder base class for forum listing pages.