RegistrantBreadcrumbBuilder.php in RNG - Events and Registrations 8

Namespace

Drupal\rng\Breadcrumb

File

src/Breadcrumb/RegistrantBreadcrumbBuilder.php

<?php

namespace Drupal\rng\Breadcrumb;

use Drupal\Core\Breadcrumb\BreadcrumbBuilderInterface;
use Drupal\Core\StringTranslation\StringTranslationTrait;
use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Core\Link;
use Drupal\Core\Breadcrumb\Breadcrumb;
use Drupal\rng\RegistrantInterface;

/**
 * Provides a breadcrumb builder for registrants.
 */
class RegistrantBreadcrumbBuilder implements BreadcrumbBuilderInterface {
  use StringTranslationTrait;

  /**
   * {@inheritdoc}
   */
  public function applies(RouteMatchInterface $route_match) {
    $registrant = $route_match
      ->getParameter('registrant');
    return $registrant instanceof RegistrantInterface;
  }

  /**
   * {@inheritdoc}
   */
  public function build(RouteMatchInterface $route_match) {
    $links[] = Link::createFromRoute($this
      ->t('Home'), '<front>');

    /** @var \Drupal\rng\RegistrantInterface $registrant */
    $registrant = $route_match
      ->getParameter('registrant');
    if ($registration = $registrant
      ->getRegistration()) {
      if ($event = $registration
        ->getEvent()) {
        $links[] = new Link($event
          ->label(), $event
          ->toUrl());
      }
      $links[] = new Link($registration
        ->label(), $registration
        ->toUrl());
    }

    // Add registrant to the breadcrumb if the current route is not canonical.
    if ('entity.registrant.canonical' != $route_match
      ->getRouteName()) {
      $links[] = new Link($registrant
        ->label(), $registrant
        ->toUrl());
    }
    $breadcrumb = new Breadcrumb();
    return $breadcrumb
      ->setLinks($links)
      ->addCacheContexts([
      'route.name',
    ]);
  }

}

Classes

Name	Description
RegistrantBreadcrumbBuilder	Provides a breadcrumb builder for registrants.