NAME

Catalyst::Controller::ActionRole - Apply roles to action instances

VERSION

version 0.11

SYNOPSIS

      package MyApp::Controller::Foo;

      use parent qw/Catalyst::Controller::ActionRole/;

      sub bar : Local Does('Moo') { ... }

DESCRIPTION

This module allows to apply roles to the Catalyst::Actions for different controller methods.

For that a Does attribute is provided. That attribute takes an argument, that determines the role, which is going to be applied. If that argument is prefixed with +, it is assumed to be the full name of the role. If it's prefixed with ~, the name of your application followed by ::ActionRole:: is prepended. If it isn't prefixed with + or ~, the role name will be searched for in @INC according to the rules for role prefix searching.

Additionally it's possible to to apply roles to all actions of a controller without specifying the Does keyword in every action definition:

      package MyApp::Controller::Bar

      use parent qw/Catalyst::Controller::ActionRole/;

      __PACKAGE__->config(
          action_roles => ['Foo', '~Bar'],
      );

      # has Catalyst::ActionRole::Foo and MyApp::ActionRole::Bar applied
      # if MyApp::ActionRole::Foo exists and is loadable, it will take
      # precedence over Catalyst::ActionRole::Foo
      sub moo : Local { ... }

ROLE PREFIX SEARCHING

Roles specified with no prefix are looked up under a set of role prefixes. The first prefix is always MyApp::ActionRole:: (with MyApp replaced as appropriate for your application); the following prefixes are taken from the _action_role_prefix attribute.

ATTRIBUTES

_action_role_prefix

This class attribute stores an array reference of role prefixes to search for role names in if they aren't prefixed with + or ~. It defaults to [ 'Catalyst::ActionRole::' ]. See "role prefix searching".

_action_roles

This attribute stores an array reference of role names that will be applied to every action of this controller. It can be set by passing a action_roles argument to the constructor. The same expansions as for Does will be performed.

AUTHORS

  Florian Ragwitz <rafl@debian.org>
  Hans Dieter Pearcey <hdp@weftsoar.net>

COPYRIGHT AND LICENSE

This software is copyright (c) 2009 by Florian Ragwitz.

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