php第五章

http://localhost:63342/htdocs/yii_basic/web/index.php?r=hello/query

<?php
/**
 * Created by PhpStorm.
 * User: forr
 * Date: 15/10/2
 * Time: 12:02
 */
namespace app\controllers;

use yii\web\Controller;
use app\models\FirstTest;

class HelloController extends Controller
{
    public function  actionIndex()
    {
        $request = \YII::$app->request;
        echo $request->get(‘id‘);
//        echo ‘hello world 23333333‘;
        //跳转
//        $this->redirect(‘https://www.baidu.com/‘);
        //下载文件
//        $response = \YII::$app->response;
//        $response->sendFile(‘./favicon.ico‘);//路径web/favicon.ico
    }
    //查询数据
    public function  actionQuery()
    {
        echo ‘my db‘;
        $sql = ‘select * from first_test where id = :id‘;
        $list = FirstTest::findBySql($sql,array(‘:id‘=>1))->all();
        print_r($list).‘<br/>‘;
        //批量查询每次查询2条记录
        $sql = ‘select * from first_test‘;
        foreach(FirstTest::find()->batch(2) as $test)
        {
            echo count($test);
        }
    }
    //删除数据
    public function actionDelete()
    {
//        $sql = ‘select * from first_test where id = :id‘;
//        $list = FirstTest::findBySql($sql,array(‘:id‘=>4))->all();
//        $list[0]->delete();
        //或
         FirstTest::deleteAll(‘id = :id‘,array(‘:id‘=>3));
    }
    //添加数据
    public function actionAdd()
    {
         $test1 = new FirstTest();
         $test1->name = ‘张杰‘;
         $test1->title = ‘逆战‘;
         $test1->age = 32;
        //启动校验规则
        $test1->validate();
        if($test1->hasErrors())
        {
            echo ‘名称过长,不符合规则‘;
            die;
        }
        $test1->save();
    }

}

<?php
/**
 * Created by PhpStorm.
 * User: forr
 * Date: 15/10/2
 * Time: 16:40
 */
namespace app\models;

use yii\db\ActiveRecord;

class FirstTest extends ActiveRecord{

    public function rules()
    {
        return [
            // 有个有效的名字
            [‘name‘, ‘string‘,‘length‘=>[0,10]],
        ];
    }
}

<?php
/**
 * Created by PhpStorm.
 * User: forr
 * Date: 15/10/2
 * Time: 16:40
 */
namespace app\models;

use yii\db\ActiveRecord;

class Orders extends ActiveRecord{
    public function getCustomer()
    {
        $customer = $this->hasOne(Customer::className(),[‘id‘=>‘customer_id‘])->asArray();
        return $customer;
    }
}

<?php
/**
 * Created by PhpStorm.
 * User: forr
 * Date: 15/10/2
 * Time: 16:40
 */
namespace app\models;

use yii\db\ActiveRecord;

class Customer extends ActiveRecord{
    public function getOrders()
    {
        $order =  $this->hasMany(Orders::className(),[‘customer_id‘=>‘id‘])->asArray();
        return $order;
    }

}