yii2 model-＞curd

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SET time_zone = "+00:00";/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8mb4 */;--
-- Database: `ssss`
---- ----------------------------------------------------------
-- 表的结构 `goods`
--CREATE TABLE `goods` (`id` int(11) NOT NULL,`name` varchar(100) NOT NULL DEFAULT ''
) ENGINE=InnoDB DEFAULT CHARSET=utf8;--
-- 转存表中的数据 `goods`
--INSERT INTO `goods` (`id`, `name`) VALUES
(1, '11111'),
(2, '22222'),
(3, '333'),
(4, '444'),
(5, '555');--
-- Indexes for dumped tables
----
-- Indexes for table `goods`
--
ALTER TABLE `goods`ADD PRIMARY KEY (`id`);--
-- 在导出的表使用AUTO_INCREMENT
----
-- 使用表AUTO_INCREMENT `goods`
--
ALTER TABLE `goods`MODIFY `id` int(11) NOT NULL AUTO_INCREMENT, AUTO_INCREMENT=6;
/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;

gii生成Goods放在common\models下。
增加

<?php
namespace frontend\controllers;
use Yii;
use yii\web\Controller;
use common\models\Goods;
class UserController extends Controller
{
    public function actionIndex(){
    $user= new Goods;         
$user->name ="cyg";  
$user->save();}
}

修改：

<?php
namespace frontend\controllers;
use Yii;
use yii\web\Controller;
use common\models\Goods;
class UserController extends Controller
{
    public function actionIndex(){
    $user = Goods::find()->where(['id'=>6])->one(); //获取name等于test的模型
$user->name = "liwen"; //修改age属性值
$user->save();   //保存}
}

删除：

<?php
namespace frontend\controllers;
use Yii;
use yii\web\Controller;
use common\models\Goods;
class UserController extends Controller
{
    public function actionIndex(){
    $user = Goods::find()->where(['id'=>6])->one(); $user->delete();}
}