Related Categories - ZOO 2.х

public function render($params = array()) {
   
        $category_ids = $this->_data->get('category', array());

        $category_links = array();
        $categories = YTable::getInstance('category')->getById($category_ids, true);
        foreach ($categories as $category) {
            $category_links[] = '<a href="'.RouteHelper::getCategoryRoute($category).'">'.$category->name.'</a>';
        }
       
        return ElementHelper::applySeparators($params['separated_by'], $category_links);
           
    }