yii2怎么自适应切换模板

1、创建behavior

// frontend/behaviors/MobileBehavior.php class MobileBehavior extends \yii\base\Behavior{    public function events()         {            return [                     \yii\web\Controller::EVENT_BEFORE_ACTION => 'beforeAction'                 ];         }        public function beforeAction($event)         {            if (strpos($_SERVER['HTTP_USER_AGENT'], 'iPhone') || strpos($_SERVER['HTTP_USER_AGENT'], 'Android') {                     $event->sender->module->setViewPath($event->sender->module->getBasePath().DIRECTORY_SEPARATOR.'H5Views');                 }          } }

2、建一个基类BaseController.php（免费学习教程分享：php教程）

/ frontend/controllers/BaseController.php class BaseController extends \yii\web\Controller{    public function behaviors()         {            return [                     \frontend\behaviors\MobileBehavior::className()                 ];         }        // 其他action}

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