NAME
    Validation::Class - Centralized Input Validation For Any Application

DESCRIPTION
    Validation::Class is a different approach to data validation, it
    attempts to simplify and centralize data validation rules to ensure DRY
    (don't repeat yourself) code. The primary intent of this module is to
    provide a simplistic validation work-flow and promote code (validation)
    reuse. The following is an example of that...

        use MyApp::Validation;
    
        my $input = MyApp::Validation->new($params);
        unless ($input->validate('login', 'password')){
            return $input->errors;
        }

WEB FRAMEWORKS
    In the context that within our MyApp web application structure we have a validation
    class named MyApp::Validation which is defined as follows:
    
    package MyApp::Validation;
    use Validation::Class;
    
    field 'login' => {
	required => 1,
	filter   => 'strip'
    };
    
    field 'password' => {
	required => 1,
	filter   => 'strip'
    };
    
    1;
    
  CATALYST - validation within a controller
    package MyApp::Index;
    use base qw/Catalyst::Controller/;
    sub index : Global {
        my ( $self, $c, @args ) = @_;
	my $input = MyApp::Validation->new($c->req->params);
        unless ($input->validate('login', 'password')){
            $c->res->body("FAIL - " . join ", ", @{ $input->errors });
        }
        $c->res->body('PASS');
    }
    

  MOJOLICIOUS - validation within a controller
    package MyApp::Index;
    use base 'Mojolicious::Controller';
    use MyApp::Validation;

    sub index {
        my $self = shift;
	my $input = MyApp::Validation->new($self->req->params);
        unless ($input->validate('login', 'password')){
            $self->render(text => "FAIL - " . join ", ", @{ $input->errors });
        }
        $self->render(text => 'PASS');
    }

  DANCER - validation within a controller
    package MyApp::Index;
    use Dancer;
    use MyApp::Validation;

    post '/login' => sub {
	my $params = {params};
	my $input = MyApp::Validation->new($params);
        unless ($input->validate('login', 'password')){
            return "FAIL - " . join ", ", @{ $input->errors };
        }
        return "PASS";
    };

AUTHOR
    Al Newkirk <awncorp@cpan.org>

COPYRIGHT AND LICENSE
    This software is copyright (c) 2010 by awncorp.

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