NAME

       Catalyst::Plugin::Authorization::Roles - Role based authorization for Catalyst based on
       Catalyst::Plugin::Authentication

SYNOPSIS

           use Catalyst qw/
               Authentication
               Authorization::Roles
           /;

           sub delete : Local {
               my ( $self, $c ) = @_;

               $c->assert_user_roles( qw/admin/ ); # only admins can delete

               $c->model("Foo")->delete_it();
           }

DESCRIPTION

       Role based access control is very simple: every user has a list of roles, which that user is allowed to
       assume, and every restricted part of the app makes an assertion about the necessary roles.

       With "assert_user_roles", if the user is a member in all of the required roles access is granted.
       Otherwise, access is denied. With "assert_any_user_role" it is enough that the user is a member in one
       role.

       There are alternative approaches to do this on a per action basis, see Catalyst::ActionRole::ACL.

       For example, if you have a CRUD application, for every mutating action you probably want to check that
       the user is allowed to edit. To do this, create an editor role, and add that role to every user who is
       allowed to edit.

           sub edit : Local {
               my ( $self, $c ) = @_;
               $c->assert_user_roles( qw/editor/ );
               $c->model("TheModel")->make_changes();
           }

       When this plugin checks the roles of a user it will first see if the user supports the self check method.

       When this is not supported the list of roles is extracted from the user using the "roles" method.

       When this is supported, the "check_roles" method will be used to delegate the role check to the user
       class. Classes like the one provided with iCatalyst::Authentication::Store::DBIx::Class optimize the
       check this way.

METHODS

       assert_user_roles [ $user ], @roles
           Checks that the user (as supplied by the first argument, or, if omitted, "$c->user") has the
           specified roles.

           If for any reason ("$c->user" is not defined, the user is missing a role, etc) the check fails, an
           error is thrown.

           You can either catch these errors with an eval, or clean them up in your "end" action.

       check_user_roles [ $user ], @roles
           Takes the same args as "assert_user_roles", and performs the same check, but instead of throwing
           errors returns a boolean value.

       assert_any_user_role [ $user ], @roles
           Checks that the user (as supplied by the first argument, or, if omitted, "$c->user") has at least one
           of the specified roles.

           Other than that, works like "assert_user_roles".

       check_any_user_role [ $user ], @roles
           Takes the same args as "assert_any_user_role", and performs the same check, but instead of throwing
           errors returns a boolean value.

SEE ALSO

       Catalyst::Plugin::Authentication
       Catalyst::ActionRole::ACL
       Catalyst::Manual::Tutorial::06_Authorization

AUTHOR

       Yuval Kogman <nothingmuch@woobling.org>

COPYRIGHT & LICENSE

       Copyright (c) 2005-2011 the Catalyst::Plugin::Authorization::Roles "AUTHOR" as listed above.

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