CGI::Application::Plugin::RunmodeDeclare - Declare runmodes with keywords

version 0.09

    package My::CgiApp;

    use base 'CGI::Application';
    use CGI::Application::Plugin::RunmodeDeclare;

    startmode hello { "Hello!" }

    runmode world($name) {
        return $self->hello
        . ', '
        . $name || "World!";
    }

    errormode oops($c: $exception) {
        return "Something went wrong at "
        . $c->get_current_runmode
        . ". Exception: $exception";
    }

This module allows you to declare run modes with a simple keyword. It provides the same features as Method::Signatures::Simple.

It respects inheritance: run modes defined in the superclass are also available in the subclass.

Beyond automatically registering the run mode, and providing $self, it also optionally pulls named parameters from $self->query->param or $self->param.

* Basic example

    runmode foo { $self->bar }

This declares the run mode "foo". Notice how $self is ready for use.

* Rename invocant

    runmode bar ($c:) { $c->baz }

Same as above, only use $c instead of $self.

    use CGI::Application::Plugin::RunmodeDeclare invocant => '$c';
    runmode baz { $c->quux }

Same as above, but every runmode gets $c by default. You can still say runmode ($self:) to rename the invocant.

* With a parameter list

    runmode baz ( $id, $name ) {
        return $self->wibble("I received $id and $name from a form submission
                              or a method invocation.");
    }

Here, we specify that the method expects two parameters, $id and $name. Values can be supplied through a method call (e.g. $self->baz(1, "me")), or from the cgiapp object (e.g. $self->param( id => 42 )), or from the query object (e.g. from /script?id=42;name=me).

* Code attributes

    runmode secret :Auth { ... }

Code attributes are supported as well.

* Combining with other ways to set run modes

This all works:

    sub setup {
        my $self = shift;
        $self->run_modes([ qw/ foo / ]);
    }

    sub foo {
        my $self = shift;
        return $self->other;
    }

    runmode bar {
        return $self->other;
    }

    sub other : Runmode {
        my $self = shift;
        return $self->param('other');
    }

So you can still use the classic way of setting up run modes, and you can still use CGI::Application::Plugin::AutoRunmode, *and* you can mix and match.

* errormode

Define the run mode that serves as $self->error_mode. You can only declare one errormode per package.

* startmode

Define the run mode that serves as $self->start_mode. You can only declare one startmode per package.

* runmode

Define run mode.

Rhesa Rozendaal, <rhesa at cpan.org>

* error mode redefined (from %s) at %s line %s

You tried to install another errormode. Placeholders are filled with

 * fully qualified name of existing errormode
 * file name
 * line number

* start mode redefined (from %s) at %s line %s

You tried to install another startmode. Placeholders are filled with

 * fully qualified name of existing startmode
 * file name
 * line number

Please report any bugs or feature requests to bug-cgi-application-plugin-runmodedeclare at rt.cpan.org, or through the web interface at http://rt.cpan.org/NoAuth/ReportBug.html?Queue=CGI-Application-Plugin-RunmodeDeclare. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.

You can find documentation for this module with the perldoc command.

    perldoc CGI::Application::Plugin::RunmodeDeclare

You can also look for information at:

* RT: CPAN's request tracker

http://rt.cpan.org/NoAuth/Bugs.html?Dist=CGI-Application-Plugin-RunmodeDeclare

* AnnoCPAN: Annotated CPAN documentation

http://annocpan.org/dist/CGI-Application-Plugin-RunmodeDeclare

* CPAN Ratings

http://cpanratings.perl.org/d/CGI-Application-Plugin-RunmodeDeclare

* Search CPAN

http://search.cpan.org/dist/CGI-Application-Plugin-RunmodeDeclare

Matt S. Trout for Devel::Declare, and Michael G. Schwern for providing the inspiration with Method::Signatures.

Copyright 2008 Rhesa Rozendaal, all rights reserved.

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