freedelivery.php

См. документацию.

<?php
 
namespace Sale\Handlers\DiscountPreset;
 
use Bitrix\Main\Localization\Loc;
use Bitrix\Sale\Discount\Preset\Manager;
use Bitrix\Sale\Discount\Preset\State;
 
class FreeDelivery extends Delivery
{
    public function getTitle()
    {
        return Loc::getMessage('SALE_HANDLERS_DISCOUNTPRESET_FREEDELIVERY_NAME');
    }
 
    public function getDescription()
    {
        return '';
    }

    public function getCategory()
    {
        return Manager::CATEGORY_DELIVERY;
    }
 
    protected function renderDiscountValue(State $state, $currency)
    {
        return '';
    }
 
    public function processSaveInputAmount(State $state)
    {
        $state['discount_type'] = 'Perc';
        $state['discount_value'] = '100';
 
        return parent::processSaveInputAmount($state);
    }
}