iwebshop中的增删改查

<?php
class Text extends IController
{
    public function hello()
    {
        $this->redirect('hello');
    }

    public function liu()
    {
        $login_info = $_COOKIE['iweb_user_id'];
        if (empty($login_info)) {
            echo "<script>alert('请先登陆!');location.href='http://localhost/test/iwebshop4.6/index.php?controller=simple&action=login'</script>";
        } else {
            $goods_ren = IFilter::act(IReq::get('ren'), 'int');
            // print_r($goods_id);die;
            $goods_nrong = IFilter::act(IReq::get('nrong'), 'int');
            $testObj = new IModel("text");
            $arr = array("ren" => $goods_ren, "nrong" => $goods_nrong);
            $testObj->setData($arr);
            $testObj->add();
            //echo $name.",".$sex;
            $this->redirect('show');
        }
    }
        public function show()
        {
            $testObj = new IModel("text");
            $arr = $testObj->query();
//        $arr =array(array('id'=>1));
            $this->list = $arr;
            // var_dump($arr);
            $this->redirect('show');
        }

        public function shan()
        {
            $id = IFilter::act(IReq::get('id'), 'int');
            $testObj = new IModel("text");
            $testObj->del("id=$id");
            $this->redirect('show');
        }

        //展示修改页面
        public function upd()
        {
            $testObj = new IModel("text");
            $id = IFilter::act(IReq::get("id"), 'int');
            $arr = $testObj->query("id=$id");
            $this->list = $arr;
            // var_dump($arr);die;
            $this->redirect('upd');
        }

        //确定修改
        public
        function sureMake()
        {
            $id = IFilter::act(IReq::get("id"));
            $name = IFilter::act(IReq::get("ren"));
            $sex = IFilter::act(IReq::get("nrong"));
            $testObj = new IModel("text");
            $test = array(
                'id' => $id,
                'ren' => $name,
                'nrong' => $sex
            );
            $testObj->setData($test);
            $where = "id=" . $id;
            $testObj->update($where);
            $this->redirect('show');
        }