NAME

HTML::FormHandler::TraitFor::Captcha - generate and validate captchas

VERSION

version 0.40054

SYNOPSIS

A role to use in a form to implement a captcha field.

package MyApp::Form;
use HTML::FormHandler::Moose;
with 'HTML::FormHandler::TraitFor::Captcha';

or

my $form = MyApp::Form->new( traits => ['HTML::FormHandler::TraitFor::Captcha'],
    ctx => $c );

Needs a context object set in the form's 'ctx' attribute which has a session hashref in which to store a 'captcha' hashref, such as is provided by Catalyst session plugin.

METHODS

get_captcha

Get a captcha stored in $form->ctx->{session}

set_captcha

Set a captcha in $self->ctx->{session}

captcha_image_url

Default is '/captcha/image'. Override in a form to change.

sub captcha_image_url { '/my/image/url/' }

Example of a Catalyst action to handle the image:

sub image : Local {
    my ( $self, $c ) = @_;
    my $captcha = $c->session->{captcha};
    $c->response->body($captcha->{image});
    $c->response->content_type('image/'. $captcha->{type});
    $c->res->headers->expires( time() );
    $c->res->headers->header( 'Last-Modified' => HTTP::Date::time2str );
    $c->res->headers->header( 'Pragma'        => 'no-cache' );
    $c->res->headers->header( 'Cache-Control' => 'no-cache' );
}

AUTHOR

FormHandler Contributors - see HTML::FormHandler

COPYRIGHT AND LICENSE

This software is copyright (c) 2013 by Gerda Shank.

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