Disable double shipping costs when various Warehouses

[Eutanasio]

Hi,

How can I do to stop Prestashop v1.7.x charging twice shipping costs when an order contains products from various warehouses? for those cases we just collect items in 1 warehouse before proceeding with a single shipping, so no need to scare customers with double shipping costs!

Thanks

[Janett]

PrestaShop will create multiple package, each with a shipping cost : https://github.com/PrestaShop/PrestaShop/blob/1.7.7.x/classes/Cart.php#L2519

If you want customer paid only shipping cost for the first package, your carrier module should implement fonction getPackageShippingCost() in order to set shipping cost to zero for others packages. See https://github.com/PrestaShop/PrestaShop/blob/1.7.7.x/classes/Cart.php#L3878

[Eutanasio]

1 hour ago, Janett said:

PrestaShop will create multiple package, each with a shipping cost : https://github.com/PrestaShop/PrestaShop/blob/1.7.7.x/classes/Cart.php#L2519

If you want customer paid only shipping cost for the first package, your carrier module should implement fonction getPackageShippingCost() in order to set shipping cost to zero for others packages. See https://github.com/PrestaShop/PrestaShop/blob/1.7.7.x/classes/Cart.php#L3878

Thanks for the answer! I don't use any modules for carriers, just use the native Prestashop carriers system, so nothing I can configure from that side.

How would you suggest I can do it in my case?

Thanks

[Janett]

You should create your own carrier module and implement getPackageShippingCost() with logic to return free shipping after the first package.

A carrier module is not hard to do, you can find an example here : https://github.com/Xaconi/prestashopcarriertester

This example needs some changes to implement getPackageShippingCost() and recommendations of https://devdocs.prestashop.com/1.7/modules/carrier/

[Eutanasio]

here's the solution: