修改已经弃用的classname

backend/modules/file/models/ars/TemFile.php

@@ -2,8 +2,8 @@
 
 namespace backend\modules\file\models\ars;
 
-use Yii;
 use yii\behaviors\TimestampBehavior;
+use yii\db\ActiveRecord;
 
 /**
  * This is the model class for table "ats_tem_file".
@@ -17,7 +17,7 @@ use yii\behaviors\TimestampBehavior;
  * @property int $updated_at 更新时间
  * @property int $created_at 创建时间
  */
-class TemFile extends \yii\db\ActiveRecord
+class TemFile extends ActiveRecord
 {
 
     /**
@@ -69,7 +69,7 @@ class TemFile extends \yii\db\ActiveRecord
     {
         return [
             [
-                'class' => TimestampBehavior::className(),
+                'class' => TimestampBehavior::class,
                 'createdAtAttribute' => 'created_at',
                 'updatedAtAttribute' => 'updated_at',
                 'value' => function() {