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.\" ========================================================================
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.IX Title "Validation::Class::Directive::Validation 3pm"
.TH Validation::Class::Directive::Validation 3pm "2023-06-11" "perl v5.36.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.SH "NAME"
Validation::Class::Directive::Validation \- Validation Directive for Validation Class Field Definitions
.SH "VERSION"
.IX Header "VERSION"
version 7.900059
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\&    use Validation::Class::Simple;
\&
\&    my $rules = Validation::Class::Simple\->new(
\&        fields => {
\&            example_data => {
\&                validation => sub {
\&
\&                    my ($self, $proto, $field, $params) = @_;
\&                    # user\-defined validation should return true/false
\&
\&                }
\&            }
\&        }
\&    );
\&
\&    # set parameters to be validated
\&    $rules\->params\->add($parameters);
\&
\&    # validate
\&    unless ($rules\->validate) {
\&        # handle the failures
\&    }
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Validation::Class::Directive::Validation is a core validation class field
directive that is used to execute user-defined validation routines. This
directive always takes a sub-routine and should return true or false.
.SH "AUTHOR"
.IX Header "AUTHOR"
Al Newkirk <anewkirk@ana.io>
.SH "COPYRIGHT AND LICENSE"
.IX Header "COPYRIGHT AND LICENSE"
This software is copyright (c) 2011 by Al Newkirk.
.PP
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.