Yii2 behavior运用

 1 class ReturnDataTypeBehaviors extends Behavior
 2 {
 3
 4     public $type = ‘json‘;
 5     public $pcOrMobile = ‘pc‘; // or  mobile
 6
 7     //控制器执行之后事件
 8     public function events()
 9     {
10         return [Controller::EVENT_BEFORE_ACTION => ‘beforeType‘];
11     }
12
13     /**
14      * 返回数据类型判断
15      * @param $event
16      * @return bool
17      */
18     public function beforeType($event)
19     {
20         if ($this->pcOrMobile == ‘pc‘) {
21             if (Yii::$app->request->isAjax) {
22                 if ($this->type == ‘json‘) {
23                     Yii::$app->response->format = Response::FORMAT_JSON;
24                 } elseif ($this->type == ‘xml‘) {
25                     Yii::$app->response->format = Response::FORMAT_XML;
26                 }
27             }
28         } else {
29             if ($this->type == ‘json‘) {
30                 Yii::$app->response->format = Response::FORMAT_JSON;
31             } elseif ($this->type == ‘xml‘) {
32                 Yii::$app->response->format = Response::FORMAT_XML;
33             }
34         }
35         return true;
36     }
37
38 }

写在BaseController 里面 ，其他的控制器继承Base ,设定请求返回的数据

 1 <?php
 2
 3 namespace app\controllers;
 4
 5 use app\behaviors\ReturnDataTypeBehaviors;
 6 use app\helpers\Util;
 7 use yii\helpers\Url;
 8 use yii\web\Controller;
 9 use app\models\Configuration;
10 use Yii;
11
12 class BaseController extends Controller
13 {
14     /**
15      * 默认分页值 默认10
16     */
17     const PAGE_SIZE = 6;
18
19
20     public function behaviors()
21     {
22         return [
23
24             ‘myBehavior‘ => [
25
26                 ‘class‘ => ReturnDataTypeBehaviors::className(),
27                 # ‘type‘=>‘json‘,
28                 #‘pcOrMobile‘=>‘pc‘
29             ]
30         ];
31     }
32     public function init()
33     {
34         //设置回调url
35         $this->_redirectUrl();
36         // 登录验证
37         $this->_checkLogin();
38         //session存留时间
39         $this->_setSessionTime();
40     }
41
42     // 登录回调
43     private function _redirectUrl()
44     {
45         $redirectUrl = Yii::$app->request->url;
46
47         if ($redirectUrl == ‘/site/login‘) {
48
49             $redirectUrl = ‘/desktop‘;
50         }
51         //设置登录后的回调路径
52         Yii::$app->session->setFlash(‘redirectUrl‘, $redirectUrl);
53     }
54
55     // 权限验证
56     private function _rbac()
57     {
58
59         //超级管理员不用过滤
60
61
62     }
63
64     // 登录验证
65     private function  _checkLogin()
66     {
67         if (!(Yii::$app->request->url == ‘/site/login‘) && !Yii::$app->user->getId()) {
68         header(‘Location:‘.Yii::$app->request->getHostInfo().‘/site/login‘);
69         exit;
70     }
71
72     }
73     //弹出小框提示
74     public function TipsBox($msg=‘‘,$url=‘‘)
75     {
76
77     }
78     //设置session的存储时间
79     private function _setSessionTime()
80     {
81         Yii::$app->session->setTimeout(1440 * 2 );
82     }
83
84 }

Controller::EVENT_BEFORE_ACTION => ‘beforeType‘ 触发事件调用‘beforeType’方法