public BookBreadcrumbBuilder::build(RouteMatchInterface $route_match)
Builds the breadcrumb.
Parameters
\Drupal\Core\Routing\RouteMatchInterface $route_match: The current route match.
Return value
\Drupal\Core\Breadcrumb\Breadcrumb A breadcrumb.
Overrides BreadcrumbBuilderInterface::build
File
- core/modules/book/src/BookBreadcrumbBuilder.php, line 58
Class
- BookBreadcrumbBuilder
- Provides a breadcrumb builder for nodes in a book.
Namespace
Drupal\book
Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | public function build(RouteMatchInterface $route_match) { $book_nids = array(); $breadcrumb = new Breadcrumb(); $links = array(Link::createFromRoute($this->t('Home'), '<front>')); $book = $route_match->getParameter('node')->book; $depth = 1; // We skip the current node. while (!empty($book['p' . ($depth + 1)])) { $book_nids[] = $book['p' . $depth]; $depth++; } $parent_books = $this->nodeStorage->loadMultiple($book_nids); if (count($parent_books) > 0) { $depth = 1; while (!empty($book['p' . ($depth + 1)])) { if (!empty($parent_books[$book['p' . $depth]]) && ($parent_book = $parent_books[$book['p' . $depth]])) { $access = $parent_book->access('view', $this->account, TRUE); $breadcrumb->addCacheableDependency($access); if ($access->isAllowed()) { $breadcrumb->addCacheableDependency($parent_book); $links[] = Link::createFromRoute($parent_book->label(), 'entity.node.canonical', array('node' => $parent_book->id())); } } $depth++; } } $breadcrumb->setLinks($links); $breadcrumb->addCacheContexts(['route.book_navigation']); return $breadcrumb;} |
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