NAME
    FormValidator::Simple::Plugin::CustomConstraint - Custom constraint
    support for FormValidator::Simple

SYNOPSIS
      use FormValidator::Simple qw/CustomConstraint/;

      my $input_params = {
        username => 'someone'
      };

      #limit search to 10 records for example
      my $arg_limit = 'LIMIT 10';

      #run the check
      my $result = FormValidator::Simple->check(
        $input_params => [
          username => [ 'NOT_BLANK', [ 'CUSTOM_CONSTRAINT', \&validate_username, $arg_limit ] ]
        ]
      );

      #define our custom validation rule
      sub validate_username {
        my ( $constraint_value, $other_args ) = @_;
        #check the database to see if username exists for example and use passed in argument ...
        $exists = $dbh->selectrow_arrayref( $sql, {}, $other_args->[0] )->[0];
        return $exists ? 1 : 0;
      }

DESCRIPTION
     This module provides a plugin for FormValidator::Simple that allows for custom constraint definitions
     or custom validation rules to be specified.

  EXPORT
    None by default.

SEE ALSO
    Catalyst::Plugin::FormValidator::Simple, FormValidator::Simple

AUTHOR
    Alex Pavlovic, <alex.pavlovic@taskforce-1.com>

COPYRIGHT AND LICENSE
    Copyright (C) 2012 by Alex Pavlovic ( alex.pavlovic@taskforce-1.com )

    This library is free software; you can redistribute it and/or modify it
    under the same terms as Perl itself, either Perl version 5.12.4 or, at
    your option, any later version of Perl 5 you may have available.

