/ 
MooseX-ClassAttribute-0.07
River stage two • 47 direct dependents • 80 total dependents
/ MooseX::ClassAttribute

NAME

MooseX::ClassAttribute - Declare class attributes Moose-style

SYNOPSIS

package My::Class;

use Moose;
use MooseX::ClassAttribute;

class_has 'Cache' =>
    ( is      => 'rw',
      isa     => 'HashRef',
      default => sub { {} },
    );

__PACKAGE__->meta()->make_immutable();

no Moose;
no MooseX::ClassAttribute;

# then later ...

My::Class->Cache()->{thing} = ...;

DESCRIPTION

This module allows you to declare class attributes in exactly the same way as object attributes, using class_has() instead of has().

You can use any feature of Moose's attribute declarations, including overriding a parent's attributes, delegation (handles), and attribute metaclasses, and it should just work. The one exception is the "required" flag, which is not allowed for class attributes.

The accessor methods for class attribute may be called on the class directly, or on objects of that class. Passing a class attribute to the constructor will not set it.

FUNCTIONS

This class exports one function when you use it, class_has(). This works exactly like Moose's has(), but it declares class attributes.

One little nit is that if you include no Moose in your class, you won't remove the class_has() function. To do that you must include no MooseX::ClassAttribute as well.

Implementation and Immutability

This module will add a role to your class's metaclass, See MooseX::ClassAttribute::Role::Meta::Class for details. This role provides introspection methods for class attributes.

Class attributes themselves do the MooseX::ClassAttribute::Role::Meta::Attribute role.

There is also a MooseX::ClassAttribute::Meta::Method::Accessor which provides part of the inlining implementation for class attributes.

Cooperation with Metaclasses and Traits

This module should work with most attribute metaclasses and traits, but it's possible that conflicts could occur. This module has been tested to work with MooseX::AttributeHelpers.

DONATIONS

If you'd like to thank me for the work I've done on this module, please consider making a "donation" to me via PayPal. I spend a lot of free time creating free software, and would appreciate any support you'd care to offer.

Please note that I am not suggesting that you must do this in order for me to continue working on this particular software. I will continue to do so, inasmuch as I have in the past, for as long as it interests me.

Similarly, a donation made in this way will probably not make me work on this software much more, unless I get so many donations that I can consider working on free software full time, which seems unlikely at best.

To donate, log into PayPal and send money to autarch@urth.org or use the button on this page: http://www.urth.org/~autarch/fs-donation.html

AUTHOR

Dave Rolsky, <autarch@urth.org>

BUGS

Please report any bugs or feature requests to bug-moosex-classattribute@rt.cpan.org, or through the web interface at http://rt.cpan.org. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.

COPYRIGHT & LICENSE

Copyright 2007-2008 Dave Rolsky, All Rights Reserved.

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