6 Moose::Cookbook::Extending::Recipe2 - Providing a role for the base object class
10 package MooseX::Debugging;
16 use Moose::Util::MetaRole;
17 use MooseX::Debugging::Role::Object;
19 Moose::Exporter->setup_import_methods();
25 Moose::Util::MetaRole::apply_base_object_roles(
26 for_class => $options{for_class},
27 role => ['MooseX::Debugging::Role::Object'],
32 package MooseX::Debugging::Role::Object;
34 after 'BUILD' => sub {
37 warn "Made a new " . ref $self . " object\n";
42 In this example, we provide a role for the base object class that adds
43 some simple debugging output. Every time an object is created, it
44 spits out a warning saying what type of object it was.
46 Obviously, a real debugging role would do something more interesting,
47 but this recipe is all about how we apply that role.
49 In this case, with the combination of L<Moose::Exporter> and
50 L<Moose::Util::MetaRole>, we ensure that when a module does "S<use
51 MooseX::Debugging>", it automatically gets the debugging role applied
52 to its base object class.
56 Dave Rolsky E<lt>autarch@urth.orgE<gt>
58 =head1 COPYRIGHT AND LICENSE
60 Copyright 2008 by Infinity Interactive, Inc.
62 L<http://www.iinteractive.com>
64 This library is free software; you can redistribute it and/or modify
65 it under the same terms as Perl itself.