opencart3调用三级菜单level 3 sub categories

　　Opencart 3的menu菜单默认只调用一级和二级菜单，但很多电商网站类目复杂，三级菜单一般都是需要的，甚至更深，那么如何调用三级菜单level 3 sub categories呢？ytkah有一些思路可以参考一下。

　　打开Catalog/controller/common/menu.php文件，修改成如下代码

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<?php class ControllerCommonMenu extends Controller {     public function index() {         $this->load->language('common/menu');           // Menu         $this->load->model('catalog/category');           $this->load->model('catalog/product');           $data['categories'] = array();           $categories = $this->model_catalog_category->getCategories(0);           foreach ($categories as $category) {             if ($category['top']) {                 // Level 2                 $children_data = array();                   $children = $this->model_catalog_category->getCategories($category['category_id']);                   foreach ($children as $child) {                       // Level 3                     $grandchildren_data = array();                       $grandchildren = $this->model_catalog_category->getCategories($child['category_id']);                       foreach ($grandchildren as $grandchild) {                           $grandchild_filter_data = array(                             'filter_category_id'  => $grandchild['category_id'],                             'filter_sub_category' => true                         );                           $grandchildren_data[] = array(                             'name'  => $grandchild['name'] . ($this->config->get('config_product_count') ? ' (' . $this->model_catalog_product->getTotalProducts($grandchild_filter_data) . ')' : ''),                             'href'  => $this->url->link('product/category', 'path=' . $category['category_id'] . '_' . $grandchild['category_id'])                         );                     }                         $filter_data = array(                         'filter_category_id'  => $child['category_id'],                         'filter_sub_category' => true                     );                       $children_data[] = array(                         'name'  => $child['name'] . ($this->config->get('config_product_count') ? ' (' . $this->model_catalog_product->getTotalProducts($filter_data) . ')' : ''),                         'href'  => $this->url->link('product/category', 'path=' . $category['category_id'] . '_' . $child['category_id']),                         'children' => $grandchildren_data,                     );                 }                   // Level 1                 $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'])                 );             }         }           return $this->load->view('common/menu', $data);     } }

　　然后还要在前端调用catalog\view\theme\default\template\common\menu.twig

　　需要代码的伙伴联系ytkah