Hi,
I was wondering if there is a way to modify a checkout field value after the client has filled everything in the form and before the shipping rates are shown.
A use case for this would be to extend functionality for the Local Delivery service, provided by Shopify, because it’s only configured to take into account the zip code, while we need the city field to be considered. So the desired checkout flow would be something like this: the client goes to checkout → fills all the required fields of the checkout form (name, phone, email, city, etc.) → some sort of middleware that updates the zip field with the value from the city field → the client can see the shipping rates from local delivery.
Thanks!