ImportController.php in farmOS 2.x

Namespace

Drupal\farm_import\Controller

File

modules/core/import/src/Controller/ImportController.php

<?php

namespace Drupal\farm_import\Controller;

use Drupal\Core\Cache\CacheableMetadata;
use Drupal\Core\Controller\ControllerBase;
use Drupal\Core\Menu\MenuLinkTreeInterface;
use Drupal\Core\Menu\MenuTreeParameters;
use Drupal\Core\StringTranslation\StringTranslationTrait;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Import controller.
 */
class ImportController extends ControllerBase {
  use StringTranslationTrait;

  /**
   * The menu link tree service.
   *
   * @var \Drupal\Core\Menu\MenuLinkTreeInterface
   */
  protected $menuLinkTree;

  /**
   * Constructs a new ImportController.
   *
   * @param \Drupal\Core\Menu\MenuLinkTreeInterface $menu_link_tree
   *   The menu link tree service.
   */
  public function __construct(MenuLinkTreeInterface $menu_link_tree) {
    $this->menuLinkTree = $menu_link_tree;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static($container
      ->get('menu.link_tree'));
  }

  /**
   * The index of importers.
   *
   * @return array
   *   Returns a render array.
   */
  public function index() : array {

    // Load all menu links below it.
    $parameters = new MenuTreeParameters();
    $parameters
      ->setRoot('farm.import')
      ->excludeRoot()
      ->setTopLevelOnly()
      ->onlyEnabledLinks();
    $tree = $this->menuLinkTree
      ->load(NULL, $parameters);
    $manipulators = [
      [
        'callable' => 'menu.default_tree_manipulators:checkAccess',
      ],
      [
        'callable' => 'menu.default_tree_manipulators:generateIndexAndSort',
      ],
    ];
    $tree = $this->menuLinkTree
      ->transform($tree, $manipulators);
    $tree_access_cacheability = new CacheableMetadata();
    $links = [];
    foreach ($tree as $element) {
      $tree_access_cacheability = $tree_access_cacheability
        ->merge(CacheableMetadata::createFromObject($element->access));

      // Only render accessible links.
      if (!$element->access
        ->isAllowed()) {
        continue;
      }

      // Include the link.
      $links[] = $element->link;
    }
    if (!empty($links)) {
      $items = [];
      foreach ($links as $link) {
        $items[] = [
          'title' => $link
            ->getTitle(),
          'description' => $link
            ->getDescription(),
          'url' => $link
            ->getUrlObject(),
        ];
      }
      $output = [
        '#theme' => 'admin_block_content',
        '#content' => $items,
      ];
    }
    else {
      $output = [
        '#markup' => $this
          ->t('You do not have any importers.'),
      ];
    }
    return $output;
  }

}

Classes

Name	Description
ImportController	Import controller.