Anastasia / cloud-bank

  <?php
      use artbox\catalog\models\Category;
      use yii\bootstrap\Html;
      use yii\web\View;
      
      /**
       * @var View $this
       * @var bool $isHome

       * @var Category[] $categories

       */

  $categories = \artbox\catalog\models\Category::find()
      ->with('categories.lang', 'lang.alias')
      ->where([ 'level' => 0 ])
      ->all();

  ?>

  <ul class="dropdown-menu sidebar" role="menu" aria-labelledby="dLabel" <?php echo $isHome ? 'id="home-category-anchor"' : ''; ?>>

      <?php
          foreach ($categories as $category) {
              if ($category->lang->alias) {
                  ?>

                <li class="dropdown-submenu <?=empty($category->categories) ? 'no-child-menu' : ''?>">

                    <?php
                        echo Html::a(
                            $category->lang->title,
                            [
                                'category/view',
                                'category' => $category->lang->alias->value,
                            ],
                            [
                                'tabindex' => -1,
                            ]
                        );
                        if (!empty($category->categories)) {
                            ?>
                          <ul class="dropdown-menu">
                              <?php
                                  foreach ($category->categories as $childCategory) {
                                      if ($childCategory->lang->alias) {
                                          echo Html::tag(
                                              'li',
                                              Html::a(
                                                  $childCategory->lang->title,
                                                  [
                                                      'category/view',
                                                      'category' => $childCategory->lang->alias->value,
                                                  ]
                                              )
                                          );
                                      }
                                  }
                              ?>
                          </ul>
                            <?php
                        }
                    ?>
                </li>
                  <?php
              }
          }
      ?>
  </ul>