验证秘钥必须是数字类型

@@ -44,7 +44,7 @@ class Room extends \yii\db\ActiveRecord
             [['app', 'secret'], 'string', 'max' => 50],
             [['pic', 'background_pic'], 'string', 'max' => 255],
             [['room_id'], 'unique'],
-            [['room_id'], 'number'],
+            [['room_id'], 'numerical', 'integerOnly'=>true],
             [['secret'], 'unique'],
             [['pic', 'background_pic'], 'required'],
         ];