HTML::...llback(3pm)

✨ HTML::FormFu::Constraint::Callback ✨

okay bestie, so this is a page from the User Contributed Perl Documentation — and it's literally about HTML::FormFu::Constraint::Callback, aka the Code Callback Constraint 💅

version 2.07 btw. noted. 🎀

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🦋 SYNOPSIS 🦋

here's the vibe, in Perl:

$field->constraint({
    type => 'Callback',
    callback => \&foo,
});

---
elements:
  - type: Text
    name: foo
    constraints:
      - type: Callback
        callback: "main::my_constraint"

sub foo {
    my ( $value, $params ) = @_;

    # return true or false
}

like. you hand it a callback. the callback says yes or no. that's the whole gig. slay. 💖

---

🌸 DESCRIPTION 🌸

so here's what's actually happening under the hood, bestie, listen up:

• the first argument passed to the callback is the submitted value for the associated field ✨
• the second argument passed to the callback is a hashref of name/value pairs for all input fields 🌈

ngl this constraint doesn't honour the not() value. like, it just doesn't. not me finding that out the hard way 😭

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👑 METHODS 👑

💅 callback

• Arguments: \&code-reference 🔥
• Arguments: "subroutine-name" 🔥

that's it. that's the method. give it a code ref or give it a subroutine name, both are valid, both are iconic. periodt. ✨

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🧚 SEE ALSO 🧚

• Is a sub-class of, and inherits methods from HTML::FormFu::Constraint 💜
• HTML::FormFu 💜

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⭐ AUTHOR ⭐

Carl Franks cfranks@cpan.org 🫶

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🌈 LICENSE 🌈

This library is free software, you can redistribute it and/or modify it under the same terms as Perl itself. 💖 (yes, fr fr, go off.)

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⭐ AUTHOR ⭐

Carl Franks <cpan@fireartist.com> 💫

(yes there are two AUTHOR sections. the icon himself appears twice. we stan.)

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🎀 COPYRIGHT AND LICENSE 🎀

This software is copyright (c) 2018 by Carl Franks.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself. 🌸

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perl v5.28.1 · 2019-01-12 — and that's the whole page bestie, go build something cute with it 💅✨🦋