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Man Pages


Manual Reference Pages  -  MOOSEX::TRAITS::PLUGGABLE (3)

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NAME

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

CONTENTS

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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perl v5.20.3 MOOSEX::TRAITS::PLUGGABLE (3) 2014-01-11

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