#!/usr/bin/perl

use strict;
use warnings;
use HTML::FormFu::Constraint::Email;

print (Email::Valid->address('somebody@somewhere.com') ? "yes\n": "no\
+n");
[download]

Indeed I did that on the first email field.

My question is how do I make it check that the second "repeat email" field is the same as the first "email" field?

Either I'm being thick, or there is a hidden trap of some sort, or you can just if (isValid ($email1) && $email1 eq $email2).

I don't want to call it after getting control back. I want the form to do that as part of its "validate" process, so it automatically interacts with the page and doesn't go through my code path that all is "submitted and validated".

The instructions show "validators" as being classes. Seems overkill to write a class, in a separate file in a structured directory branch I don't even have now, to do a simple comparison.

So, does this particular validator already exist, or is there a way to do equals between two fields (not just with constants) in the form definition, or can I just pass a code ref somewhere?

HTML::FormFu::Constraint::Equal

elements:
    - name: email
      constraints:
        - type: Email
        - type: Equal
          others:
            - email
    - name: repeat_email
[download]

That's it! Thanks.

Typo - it should have been:

elements:
    - name: email
      constraints:
        - type: Email
        - type: Equal
          others:
            - repeat_email
    - name: repeat_email
[download]

Thanks to ikegami for the heads-up