Validate custom field before checkout

[philipp1992]

Hi,

 

i have a product with a custom field, that has to be unique among all clients. how can i validate this (against the whmcs database?) before the client can continue with the ordering process?

kind regards

Philipp

thanks and kind

[brian!]

Hi Philipp,

On 20/04/2020 at 10:21, philipp1992 said:

i have a product with a custom field, that has to be unique among all clients. how can i validate this (against the whmcs database?) before the client can continue with the ordering process?

if you have to check the database, then you couldn't really use regular expressions in the validation field, you would require a cart validation hook to check the entered value against the existing values already in the database.