public function getIncompleteOrder()
    {
        if (!\Yii::$app->user->isGuest) {
            $user = User::findOne(\Yii::$app->user->id);
            $order = Order::find()
                ->where(['user_id' => $user->id, 'status' => OrderStatus::STATUS_INCOMPLETE])
                ->one();
            if (!empty($order)) {
                return $order;
            }
        }
        return null;
    }