Forms library and server-side validation

[ataylor32]

I'm trying to use the PrimeVue forms library, but I don't know how to incorporate server-side validation. I know there is an emphasis on client-side validation, but sometimes error messages must come from the server. For example, some websites are set up so that when you change your password, you're not allowed to change it to one that you've used recently.

My question is: when client-side validation passes, so you submit the form to the server, but then the server says that one or more of the fields have errors, how should I get those fields' errors to display to the user?