Rafael Kitover

NAME

MooseX::Traits::Pluggable - trait loading and resolution for Moose

DESCRIPTION

See MooseX::Traits for usage information.

Use new_with_traits to construct an object with a list of traits and apply_traits to apply traits to an instance.

Adds support for class precedence search for traits and some extra attributes, described below.

TRAIT SEARCH

If the value of "_trait_namespace" in MooseX::Traits starts with a + the namespace will be considered relative to the class_precedence_list (ie. @ISA) of the original class.

Example:

  package Class1
  use Moose;

  package Class1::Trait::Foo;
  use Moose::Role;
  has 'bar' => (
      is       => 'ro',
      isa      => 'Str',
      required => 1,
  );

  package Class2;
  use parent 'Class1';
  with 'MooseX::Traits';
  has '+_trait_namespace' => (default => '+Trait');
  has '+_traits_behave_like_roles' => (default => 1);

  package Class2::Trait::Bar;
  use Moose::Role;
  has 'baz' => (
      is       => 'ro',
      isa      => 'Str',
      required => 1,
  );

  package main;
  my $instance = Class2->new_with_traits(
      traits => ['Foo', 'Bar'],
      bar => 'baz',
      baz => 'quux',
  );

  $instance->does('Class1::Trait::Foo'); # true
  $instance->does('Class2::Trait::Bar'); # true

NAMESPACE ARRAYS

You can search multiple namespaces for traits, for example:

  has '+_trait_namespace' => (
      default => sub { [qw/+Trait +Role ExtraNS::Trait/] }
  );

Will search in the class_precedence_list for ::Trait::TheTrait and ::Role::TheTrait and then for ExtraNS::Trait::TheTrait.

CORRECT ROLE BEHAVIOR

By default, a method from a role will override a class method, this however is not the behavior one expects when applying a Moose role using the normal methods.

If you want the behavior to be consistent with Moose roles, then use this configuration attribute in your class:

  has '+_traits_behave_like_roles' => (default => 1);

This may or may not become the default in the future, for now you have to ask for it for backward compatibility reasons.

EXTRA ATTRIBUTES

_original_class_name

When traits are applied to your class or instance, you get an anonymous class back whose name will be not the same as your original class. So ref $self will not be Class, but $self->_original_class_name will be.

_traits

List of the (unresolved) traits applied to the instance.

_resolved_traits

List of traits applied to the instance resolved to full package names.

SEE ALSO

MooseX::Traits, MooseX::Object::Pluggable, CatalystX::Component::Traits

BUGS

Please report any bugs or feature requests to bug-moosex-traits-pluggable at rt.cpan.org, or through the web interface at http://rt.cpan.org/NoAuth/ReportBug.html?Queue=MooseX-Traits-Pluggable. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.

AUTHOR

Rafael Kitover <rkitover@cpan.org>

CONTRIBUTORS

Tomas Doran, <bobtfish@bobtfish.net> Fitz Elliott, <fitz.elliott@gmail.com> Andreas Marienborg, <andreas.marienborg@gmail.com> Alexander Hartmaier, <abraxxa@cpan.org>

COPYRIGHT & LICENSE

Copyright (c) 2014 by the aforementioned "AUTHOR" and "CONTRIBUTORS".

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




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