public function actionPayment()
{
$merchant_id = Yii::$app->request->get('merchant_id');
//商家id
$discount_id = Yii::$app->request->get('discount_id');
//优惠id
$session = Yii::$app->session;
$user_id = $session->get('user_id', "");
//用户id
$model = new Merchant();
$res = $model->payment($merchant_id, $discount_id, $user_id);
return $this->render('payment', ['merchant' => $res['merchant'], 'discount' => $res['discount'], 'user' => $res['user']]);
}
