Response from umbraco author Søren Spelling Lund:
"Hi Fabio,
You're correct that there is no validation in the XSLT store. It's really only meant to show you how the APIs work.
If you validation you'll have to do checks server side with XSLT on all the posted values or use a Javascript based validation framework like jQuery validation.
An alternative is to use the brand new Razor store for uCommerce 3 which is full featured including validation and best pratices.
uCommerce: How to validate the forms?
Just realized that the forms in the checkout don't have any validation built-in.
What/Where do I need to do to validate the form fields?
Im courius on that subject to...
Im currently relying on jQuery for that purpose...
Response from umbraco author Søren Spelling Lund:
"Hi Fabio,
You're correct that there is no validation in the XSLT store. It's really only meant to show you how the APIs work.
If you validation you'll have to do checks server side with XSLT on all the posted values or use a Javascript based validation framework like jQuery validation.
An alternative is to use the brand new Razor store for uCommerce 3 which is full featured including validation and best pratices.
You can check it out at https://bitbucket.org/uCommerce/ucommerce-razor-store (only works with the uCommerce 3)."
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