創建模塊modules;

在main.php中配置文件：（1）

（2）控制器層：

namespace frontend\modules\v1\controllers;
use frontend\modules\v1\models\Fruit;
use  yii\rest\ActiveController;
class FruitController extends ActiveController{
   protected $result=array(
       ‘code‘=>0,
       ‘data‘=>‘‘,
       ‘error‘=>‘‘,
 
   );

public $modelClass = ‘frontend\modules\v1\models\Fruit‘;
 public function actions(){
     $actions = parent::actions();
     unset($actions[‘index‘], $actions[‘update‘], $actions[‘create‘], $actions[‘delete‘], $actions[‘view‘]);
     return $actions;
 }
//查詢單條  get
 public function actionView(){
     $id=\Yii::$app->request->get(‘id‘);
 
     $FruitList=Fruit::get($id);
     $this->result[‘data‘]=$FruitList;
     return  $this->result;
 }
//查詢全部  get
 public function actionIndex(){
     $FruilList=Fruit::getAll();
     $this->result[‘data‘]=$FruilList;
     return $this->result;
 }
 //添加 post
 public function actionCreate(){
     $name=\Yii::$app->request->post(‘name‘);
 
     $num=\Yii::$app->request->post(‘num‘);
     if(empty($name)){
         $this->result[‘code‘]=1000;
         return $this->result;
     }if(empty($num)){
         $this->result[‘code‘]=1001;
         return $this->result;
     }
     $fruit=array(
         ‘name‘=>$name,
         ‘num‘=>$num
     );
     if (false === Fruit::add($fruit)){
         $this->result[‘code‘]=1002;
         $this->result[‘error‘]=‘add is error‘;
     }
      return $this->result;
 }

//修改 post
 public function actionUpdate(){
     $id=\Yii::$app->request->post(‘id‘);
     $num=\Yii::$app->request->post(‘num‘);
     if($id<1){
         $this->result[‘code‘]=1001;
         return $this->result;
     }
     if($num<1){
         $this->result[‘code‘]=1002;
         return $this->result;
     }
     $params=array(
         ‘num‘=>$num,
     );
     if (false === Fruit::modify($id,$params)){
         $this->result[‘code‘]=1012;
         $this->result[‘error‘]=‘update is error‘;
     }
 }
//刪除 get
 public function actionDelete(){
     $id=\Yii::$app->request->get(‘id‘);
     if($id<1){
         $this->result[‘code‘]=1020;
         return $this->result;
     }
     if (false === Fruit::del($id)){
         $this->result[‘code‘]=1022;
         $this->result[‘error‘]=‘delete is error‘;
     }
     return $this->result;
 }

(3)模型層
<?php

namespace frontend\modules\v1\models;
use Yii;
class Fruit extends \yii\base\Model{
    private static $_tbl = ‘fruit‘;
//查詢所有
    public static function getAll(){
        $db = Yii::$app->db->createCommand(‘SELECT `id`,`name`,`num` FROM ‘ . self::$_tbl);
        $result = $db->queryAll();
        if( is_array($result) ){
            return $result;
        }
        return array();
    }
//查詢單條
    public static function get($id){
        $db = Yii::$app->db->createCommand(‘SELECT `id`,`name`,`num` FROM ‘ . self::$_tbl . ‘ WHERE id=:id‘);
        $result = $db->bindValue(‘:id‘, $id)->queryOne();
        if( is_array($result) ){
            return $result;
        }
        return array();
    }
    //添加
    public static function add(array &$params){
       $res=Yii::$app->db->createCommand()->insert(self::$_tbl,[
          ‘name‘=>$params[‘name‘],
          ‘num‘=>$params[‘num‘],
       ])->execute();
       if($res){
           return true;
       }else{
           return false;
       }
    }

//修改
    public  static  function modify($id,array &$params){
        $res=Yii::$app->db->createCommand()->update(self::$_tbl,$params,‘id=‘.$id)->execute();
        if($res===0){
            return false;
        }
        return true;
    }
//刪除
    public static function del($id){
        $res=Yii::$app->db->createCommand()->delete(self::$_tbl,‘id=‘.$id)->execute();
        if($res===0){
            return false;
        }
        return true;
    }

}

（4）模塊初始化 

<?php
namespace frontend\modules\v1;
class Module extends \yii\base\Module{
    public $controllerNamespace = ‘frontend\modules\v1\controllers‘;
    public function init(){
        parent::init();
    }
}

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