How to programmatically change the payer type in bitrix:sale.order.ajax?

Question

1C-Bitrix

On the checkout page, you need to remove the payer type selection radiobuttons and set the payer type programmatically. How to do it?

Answer 1

Managed to do this by subscribing to the OnSaleComponentOrderOneStepPersonType event.
/bitrix/php_interface/init.php file code:

AddEventHandler("sale", "OnSaleComponentOrderOneStepPersonType", "selectSavedPersonType");
function selectSavedPersonType(&$arResult, &$arUserResult, $arParams)
{
    global $USER;
    if($USER->IsAuthorized())
    {
        $rsUser = $USER->GetByID($USER->GetID());
        $arUser = $rsUser->Fetch();
        $entity = $arUser['UF_ENTITY']; //поле принадлежности к юр. лицу

        $personType = 0;
        if ($entity) {
            $personType = 2;
        } else {
            $personType = 1;
        }
        //очищаем текущее значение типа плательщика
        foreach($arResult['PERSON_TYPE'] as $key => $type){
            if($type['CHECKED'] == 'Y'){
                $arResult['PERSON_TYPE'][$key]['CHECKED'] = '';
            }
        }
        //устанавливаем новое значение типа плательщика
        $arResult['PERSON_TYPE'][$personType]['CHECKED'] = 'Y';
        $arUserResult['PERSON_TYPE_ID'] = $personType;
    }
}

Answer 2

You can just hide it with css and use jquery to select$("#PERSON_TYPE_2").click();