How to add additional Property in Response triggered through BadRequestHttpException()

Yii 2.0
1

Hi Experts,

When throwing BadRequestHttpException() in Yii2 Response has following fields
{
“name”: “Bad Request”,
“message”: “The Refresh Token is invalid”,
“code”: 0,
“status”: 400,
“type”: “yii\web\BadRequestHttpException”
}
This is OK. However we are integrating our system with one of Google Assistant Service and in case of invalid refresh token the expect “error” property with “Invalid_grant” in 400 response. I am struggling for last 3 days but unable to add additional property in Http response. I need to send response like below
{
“name”: “Bad Request”,
“error”: “invalid_grant”,
“message”: “The Refresh Token is invalid”,
“code”: 0,
“status”: 400,
“type”: “yii\web\BadRequestHttpException”
}

Tried multiple ways but not able to add additional filed “error” in the response. As a result automated test suite set by Google is failing for invalid refresh token (google documentation). Can you please guide me how to add additional filed.

2

Hi.
As long as the Response extends Component you can manipulate its content for example by attaching to the Response’s EVENT_AFTER_PREPARE event.

In a hurry so maybe bit ugly but works. In action:

Yii::$app->response->on(Response::EVENT_AFTER_PREPARE, function($event){
        $event->sender->data = array_merge ($event->sender->data, $event->data);
        $event->sender->formatters['json']->format($event->sender);
    }, ['error' => 'Invalid_grant']
    );
    // Yii::$app->response->format = \yii\web\Response::FORMAT_JSON;
    throw new BadRequestHttpException('The Refresh Token is invalid');