Стоимость доставки отдельной строкой в Minishop2 (после </body>)

index.js

	<script>
miniShop2.Order.deliveryCost = '#ms2_delivery_cost';

miniShop2.Callbacks.Order.getcost.response.success = function(response) {

    var rdc = response.data['delivery_cost'];

    if(rdc) $(miniShop2.Order.deliveryCost, miniShop2.Order.order).text(miniShop2.Utils.formatPrice(rdc));
    else $(miniShop2.Order.deliveryCost, miniShop2.Order.order).text('0');
}

miniShop2.Callbacks.Order.getcost.response.error = function(response) {

    var cost = response.data['cost'];

    $(miniShop2.Order.orderCost).text(miniShop2.Utils.formatPrice(cost));
    $(miniShop2.Order.deliveryCost, miniShop2.Order.order).text('0');
}

miniShop2.Callbacks.Order.add.response.success = function(response) {
     miniShop2.Order.getcost();
    }
</script>

index.tpl

<span id="deliveryprice">Стоимость доставки: <span id="ms2_delivery_cost"></span> руб.</span>

mscustomorderhandler.class.php

<?php
if(!class_exists('msOrderInterface')) {
	require_once dirname(dirname(dirname(__FILE__))) . '/model/minishop2/msorderhandler.class.php';
}

class detaliOrderHandler extends msOrderHandler implements msOrderInterface {

	public function getCost($with_cart = true, $only_cost = false)
    {
        $response = $this->ms2->invokeEvent('msOnBeforeGetOrderCost', array(
            'order' => $this,
            'cart' => $this->ms2->cart,
            'with_cart' => $with_cart,
            'only_cost' => $only_cost,
        ));
        if (!$response['success']) {
            return $this->error($response['message']);
        }

        $cart = $this->ms2->cart->status();
        $cost = $with_cart
            ? $cart['total_cost']
            : 0;

        /** @var msDelivery $delivery */
        if (!empty($this->order['delivery']) && $delivery = $this->modx->getObject('msDelivery',
                $this->order['delivery'])
        ) {
            $cost = $delivery->getCost($this, $cost);
            $deliveryCost = $delivery->getCost($this, 0);//Добавил переменную где получаем price доставки
        }

        /** @var msPayment $payment */
        if (!empty($this->order['payment']) && $payment = $this->modx->getObject('msPayment',
                $this->order['payment'])
        ) {
            $cost = $payment->getCost($this, $cost);
        }

        $response = $this->ms2->invokeEvent('msOnGetOrderCost', array(
            'order' => $this,
            'cart' => $this->ms2->cart,
            'with_cart' => $with_cart,
            'only_cost' => $only_cost,
            'cost' => $cost,
        ));
        if (!$response['success']) {
            return $this->error($response['message']);
        }
        $cost = $response['data']['cost'];

        return $only_cost
            ? $cost
            : $this->success('', array('cost' => $cost, 'delivery_cost'=>$deliveryCost));
    }
    
}

Дайте код, что бы правильно зарегистрировать класс?

Дайте код, что бы правильно зарегистрировать класс?
Выполни в Console и в "Системные настройки & События" ключу ms2_order_handler_class укажи значение detaliOrderHandler
<?php if ($miniShop2 = $modx->getService('miniShop2')) { $miniShop2->addService('order', 'detaliOrderHandler', '{core_path}components/minishop2/custom/order/mscustomorderhandler.class.php' ); }
После чего в чанке tpl.msOrder можешь выводить переменную
<span id="deliveryprice">Стоимость доставки: <span id="ms2_delivery_cost"></span> руб.</span>