aleph1.co.uk Git - yaffs-website/blob - src/Breadcrumb/ForumListingBreadcrumbBuilder.php

   1 <?php
   2
   3 namespace Drupal\forum\Breadcrumb;
   4
   5 use Drupal\Core\Link;
   6 use Drupal\Core\Routing\RouteMatchInterface;
   7
   8 /**
   9  * Provides a breadcrumb builder base class for forum listing pages.
  10  */
  11 class ForumListingBreadcrumbBuilder extends ForumBreadcrumbBuilderBase {
  12
  13   /**
  14    * {@inheritdoc}
  15    */
  16   public function applies(RouteMatchInterface $route_match) {
  17     return $route_match->getRouteName() == 'forum.page' && $route_match->getParameter('taxonomy_term');
  18   }
  19
  20   /**
  21    * {@inheritdoc}
  22    */
  23   public function build(RouteMatchInterface $route_match) {
  24     $breadcrumb = parent::build($route_match);
  25     $breadcrumb->addCacheContexts(['route']);
  26
  27     // Add all parent forums to breadcrumbs.
  28     /** @var \Drupal\Taxonomy\TermInterface $term */
  29     $term = $route_match->getParameter('taxonomy_term');
  30     $term_id = $term->id();
  31     $breadcrumb->addCacheableDependency($term);
  32
  33     $parents = $this->termStorage->loadAllParents($term_id);
  34     if ($parents) {
  35       foreach (array_reverse($parents) as $parent) {
  36         if ($parent->id() != $term_id) {
  37           $breadcrumb->addCacheableDependency($parent);
  38           $breadcrumb->addLink(Link::createFromRoute($parent->label(), 'forum.page', [
  39             'taxonomy_term' => $parent->id(),
  40           ]));
  41         }
  42       }
  43     }
  44
  45     return $breadcrumb;
  46   }
  47
  48 }