1 package Moose::Cookbook::Basics::Recipe11;
3 # ABSTRACT: Extending a non-Moose base class
14 'DateTime::Calendar::Mayan' => '0',
15 'MooseX::NonMoose' => '0',
26 extends qw( DateTime );
30 isa => 'DateTime::Calendar::Mayan',
33 builder => '_build_mayan_date',
34 clearer => '_clear_mayan_date',
35 predicate => 'has_mayan_date',
39 $_[0]->_clear_mayan_date;
42 sub _build_mayan_date {
43 DateTime::Calendar::Mayan->from_object( object => $_[0] );
48 This recipe demonstrates how to use Moose to subclass a parent which
49 is not Moose based. This recipe only works if the parent class uses a
50 blessed hash reference for object instances. If your parent is doing
51 something funkier, you should check out L<MooseX::NonMoose::InsideOut> and L<MooseX::InsideOut>.
53 The meat of this recipe is contained in L<MooseX::NonMoose>, which does all
54 the grunt work for you.
58 my $dt = My::DateTime->new( year => 1970, month => 2, day => 24 );
60 can_ok( $dt, 'mayan_date' );
61 isa_ok( $dt->mayan_date, 'DateTime::Calendar::Mayan' );
62 is( $dt->mayan_date->date, '12.17.16.9.19', 'got expected mayan date' );
64 $dt->set( year => 2009 );
65 ok( ! $dt->has_mayan_date, 'mayan_date is cleared after call to ->set' );