public function actionDeleteTrainUsers()
{
$trainId = \Yii::$app->request->get('id');
$model = TrainUsers::deleteAll(['id' => $trainId]);
if ($model) {
return $this->redirect('index');
} else {
throw new ServerErrorHttpException('删除失败，原因：' . json_encode($model->errors, JSON_UNESCAPED_UNICODE));
}
}
