在 opencart 中获取第三级类别

我想要foreachOpenCart 类别模块的第三级， 这是仅生成 2 级类别的代码，请帮助并修改，以便生成第三级：

<ul id="menu">
    <?php foreach ($categories as $category) { ?>
    <li><a href="<?php echo $category['href']; ?>"><?php echo $category['name']; ?></a>
      <?php if ($category['children']) { ?>
        <?php for ($i = 0; $i < count($category['children']);) { ?>
        <ul>
          <?php $j = $i + ceil(count($category['children']) / $category['column']); ?>
          <?php for (; $i < $j; $i++) { ?>
          <?php if (isset($category['children'][$i])) { ?>
          <li><a href="<?php echo $category['children'][$i]['href']; ?>"><?php echo $category['children'][$i]['name']; ?></a></li>
          <?php } ?>
          <?php } ?>
        </ul>
        <?php } ?>
      <?php } ?>
    </li>
    <?php } ?>
  </ul>

为此，您首先需要编辑标头控制器：

转到目录->控制器->公共->header.php

编辑创建 $categories 变量的部分。通过以下脚本更新：

$categories = $this->model_catalog_category->getCategories(0);

        foreach ($categories as $category) {
            if ($category['top']) {
                $children_data = array();



                $children = $this->model_catalog_category->getCategories($category['category_id']);

                foreach ($children as $child) {

                    $sec_children_data = array();
                    $sec_children = $this->model_catalog_category->getCategories($child['category_id']);

                    foreach ($sec_children as $sec_child) {
                        $sec_children_data[] = array(
                        'name'  => $sec_child['name'] . ($this->config->get('config_product_count') ? ' (' . $product_total . ')' : ''),
                        'href'  => $this->url->link('product/category', 'path=' . $child['category_id'] . '_' . $sec_child['category_id'])  
                           );
                        }
                    $data = array(
                        'filter_category_id'  => $child['category_id'],
                        'filter_sub_category' => true
                    );

                    $product_total = $this->model_catalog_product->getTotalProducts($data);

                    $children_data[] = array(
                        'name'  => $child['name'] . ($this->config->get('config_product_count') ? ' (' . $product_total . ')' : ''),
                        'href'  => $this->url->link('product/category', 'path=' . $category['category_id'] . '_' . $child['category_id']), 'children' => $sec_children_data 
                    );                      
                }

                // Level 1
                $this->data['categories'][] = array(
                    'name'     => $category['name'],
                    'children' => $children_data,
                    'column'   => $category['column'] ? $category['column'] : 1,
                    'href'     => $this->url->link('product/category', 'path=' . $category['category_id'])
                );
            }
        }

然后更新视图文件以显示第三级类别。