how to Json encode in yii2?

Question

Attempting to encode json and receive 400: Bad Request in yii2. I am trying to encode in Rest client but it is not working properly.

Answer 1

i think 400 have nothing to do with json_encode

google "yii2 csrf" for more information.

public function actionRegister()
{
    // is not safe
    Yii::$app->controller->enableCsrfValidation = false;

    // set response header
    \Yii::$app->response->format = \yii\web\Response::FORMAT_JSON;
  
    $model = new TblUserRegistration();
    $username = $_POST['username'];
    return $username;
}

or add scrf in view: form:

meta: