public function _initialize() { //获取购物车中的总商品数和总价格 $cart_model = new \Model\CartModel(); $total = $cart_model->getTotal(); $this->assign('total', $total); //取出顶级栏目,用于导航显示 $cat_model = new \Model\CategoryModel(); $nav_list = $cat_model->getNav(); $this->assign('nav_list', $nav_list); }