public PathBasedBreadcrumbBuilder::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/system/src/PathBasedBreadcrumbBuilder.php, line 123
Class
- PathBasedBreadcrumbBuilder
- Class to define the menu_link breadcrumb builder.
Namespace
Drupal\system
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 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 | public function build(RouteMatchInterface $route_match) { $breadcrumb = new Breadcrumb(); $links = array(); // General path-based breadcrumbs. Use the actual request path, prior to // resolving path aliases, so the breadcrumb can be defined by simply // creating a hierarchy of path aliases. $path = trim($this->context->getPathInfo(), '/'); $path_elements = explode('/', $path); $exclude = array(); // Don't show a link to the front-page path. $front = $this->config->get('page.front'); $exclude[$front] = TRUE; // /user is just a redirect, so skip it. // @todo Find a better way to deal with /user. $exclude['/user'] = TRUE; // Add the url.path.parent cache context. This code ignores the last path // part so the result only depends on the path parents. $breadcrumb->addCacheContexts(['url.path.parent']); while (count($path_elements) > 1) { array_pop($path_elements); // Copy the path elements for up-casting. $route_request = $this->getRequestForPath('/' . implode('/', $path_elements), $exclude); if ($route_request) { $route_match = RouteMatch::createFromRequest($route_request); $access = $this->accessManager->check($route_match, $this->currentUser, NULL, TRUE); // The set of breadcrumb links depends on the access result, so merge // the access result's cacheability metadata. $breadcrumb = $breadcrumb->addCacheableDependency($access); if ($access->isAllowed()) { $title = $this->titleResolver->getTitle($route_request, $route_match->getRouteObject()); if (!isset($title)) { // Fallback to using the raw path component as the title if the // route is missing a _title or _title_callback attribute. $title = str_replace(array('-', '_'), ' ', Unicode::ucfirst(end($path_elements))); } $url = Url::fromRouteMatch($route_match); $links[] = new Link($title, $url); } } } if ($path && '/' . $path != $front) { // Add the Home link, except for the front page. $links[] = Link::createFromRoute($this->t('Home'), '<front>'); } return $breadcrumb->setLinks(array_reverse($links));} |
Please login to continue.