# phpman > perldoc > Moose::Cookbook::Basics::DateTime_ExtendingNonMooseParent

## NAME
    [Moose::Cookbook::Basics::DateTime_ExtendingNonMooseParent](https://www.chedong.com/phpMan.php/perldoc/Moose%3A%3ACookbook%3A%3ABasics%3A%3ADateTimeExtendingNonMooseParent/markdown) - Extending a non-Moose parent class

## VERSION
    version 2.2200

## SYNOPSIS
      package [My::DateTime](https://www.chedong.com/phpMan.php/perldoc/My%3A%3ADateTime/markdown);

      use Moose;
      use [MooseX::NonMoose](https://www.chedong.com/phpMan.php/perldoc/MooseX%3A%3ANonMoose/markdown);
      use [DateTime::Calendar::Mayan](https://www.chedong.com/phpMan.php/perldoc/DateTime%3A%3ACalendar%3A%3AMayan/markdown);
      extends qw( DateTime );

      has 'mayan_date' => (
          is        => 'ro',
          isa       => '[DateTime::Calendar::Mayan](https://www.chedong.com/phpMan.php/perldoc/DateTime%3A%3ACalendar%3A%3AMayan/markdown)',
          init_arg  => undef,
          lazy      => 1,
          builder   => '_build_mayan_date',
          clearer   => '_clear_mayan_date',
          predicate => 'has_mayan_date',
      );

      after 'set' => sub {
          $_[0]->_clear_mayan_date;
      };

      sub _build_mayan_date {
          [DateTime::Calendar::Mayan](https://www.chedong.com/phpMan.php/perldoc/DateTime%3A%3ACalendar%3A%3AMayan/markdown)->from_object( object => $_[0] );
      }

## DESCRIPTION
    This recipe demonstrates how to use Moose to subclass a parent which is not Moose based. This
    recipe only works if the parent class uses a blessed hash reference for object instances. If
    your parent is doing something funkier, you should check out [MooseX::NonMoose::InsideOut](https://www.chedong.com/phpMan.php/perldoc/MooseX%3A%3ANonMoose%3A%3AInsideOut/markdown) and
    [MooseX::InsideOut](https://www.chedong.com/phpMan.php/perldoc/MooseX%3A%3AInsideOut/markdown).

    The meat of this recipe is contained in [MooseX::NonMoose](https://www.chedong.com/phpMan.php/perldoc/MooseX%3A%3ANonMoose/markdown), which does all the grunt work for you.

## AUTHORS
    *   Stevan Little <<stevan@cpan.org>>

    *   Dave Rolsky <<autarch@urth.org>>

    *   Jesse Luehrs <<doy@cpan.org>>

    *   Shawn M Moore <<sartak@cpan.org>>

    *   יובל קוג'מן (Yuval Kogman) <<nothingmuch@woobling.org>>

    *   Karen Etheridge <<ether@cpan.org>>

    *   Florian Ragwitz <<rafl@debian.org>>

    *   Hans Dieter Pearcey <<hdp@cpan.org>>

    *   Chris Prather <<chris@prather.org>>

    *   Matt S Trout <<mstrout@cpan.org>>

## COPYRIGHT AND LICENSE
    This software is copyright (c) 2006 by Infinity Interactive, Inc.

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