site_id ] ]; $list = $help->getHelpClassList($condition, 'class_id, class_name', 'sort asc, create_time desc'); $order = 'sort asc, create_time desc'; $field = 'id,title,link_address'; if (!empty($list[ 'data' ])) { foreach ($list[ 'data' ] as $k => $v) { $condition = [ [ 'class_id', '=', $v[ 'class_id' ] ], [ 'site_id', '=', $this->site_id ] ]; $child_list = $help->getHelpList($condition, $field, $order); $child_list = $child_list[ 'data' ]; $list[ 'data' ][ $k ][ 'child_list' ] = $child_list; } } return $this->response($list); } }