add date time behaviour to ugiro reques assignment type

common/models/UgiroRequestAssignment.php

@@ -3,6 +3,8 @@
 namespace common\models;
 
 use Yii;
+use yii\behaviors\TimestampBehavior;
+use yii\helpers\ArrayHelper;
 
 /**
  * This is the model class for table "ugiro_request_assignment".
@@ -48,4 +50,14 @@ class UgiroRequestAssignment extends \yii\db\ActiveRecord
             'updated_at' => Yii::t('common/ugiro_request_assignment', 'Updated At'),
         ];
     }
+
+      public function behaviors()
+    {
+    	return ArrayHelper::merge(  [
+    			[
+    					'class' => TimestampBehavior::className(),
+    					'value' => function(){  return date('Y-m-d H:i:s'   ); }
+    			],
+    			], parent::behaviors());
+    }
 }