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pkg://MooseX-Traits-0.11.tar.gz:23071/MooseX-Traits-0.11/  downloads

README

NAME
    MooseX::Traits - automatically apply roles at object creation time

SYNOPSIS
    Given some roles:

      package Role;
      use Moose::Role;
      has foo => ( is => 'ro', isa => 'Int' required => 1 );

    And a class:

      package Class;
      use Moose;
      with 'MooseX::Traits';

    Apply the roles to the class at "new" time:

      my $class = Class->with_traits('Role')->new( foo => 42 );

    Then use your customized class:

      $class->isa('Class'); # true
      $class->does('Role'); # true
      $class->foo; # 42

DESCRIPTION
    Often you want to create components that can be added to a class
    arbitrarily. This module makes it easy for the end user to use these
    components. Instead of requiring the user to create a named class with
    the desired roles applied, or apply roles to the instance one-by-one, he
    can just create a new class from yours with "with_traits", and then
    instantiate that.

    There is also "new_with_traits", which exists for compatibility reasons.
    It accepts a "traits" parameter, creates a new class with those traits,
    and then insantiates it.

       Class->new_with_traits( traits => [qw/Foo Bar/], foo => 42, bar => 1 )

    returns exactly the same object as

       Class->with_traits(qw/Foo Bar/)->new( foo => 42, bar => 1 )

    would. But you can also store the result of "with_traits", and call
    other methods:

       my $c = Class->with_traits(qw/Foo Bar/);
       $c->new( foo => 42 );
       $c->whatever( foo => 1234 );

    And so on.

METHODS
    $class->with_traits( @traits )
        Return a new class with the traits applied. Use like:

    $class->new_with_traits(%args, traits => \@traits)
        "new_with_traits" can also take a hashref, e.g.:

          my $instance = $class->new_with_traits({ traits => \@traits, foo => 'bar' });

ATTRIBUTES YOUR CLASS GETS
    This role will add the following attributes to the consuming class.

  _trait_namespace
    You can override the value of this attribute with "default" to
    automatically prepend a namespace to the supplied traits. (This can be
    overridden by prefixing the trait name with "+".)

    Example:

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

      package Another::Class;
      use Moose;
      with 'MooseX::Traits';
      has '+_trait_namespace' => ( default => 'Another' );

      my $instance = Another::Class->new_with_traits(
          traits => ['Trait'], # "Another::Trait", not "Trait"
          bar    => 'bar',
      );
      $instance->does('Trait')          # false
      $instance->does('Another::Trait') # true

      my $instance2 = Another::Class->new_with_traits(
          traits => ['+Trait'], # "Trait", not "Another::Trait"
      );
      $instance2->does('Trait')          # true
      $instance2->does('Another::Trait') # false

AUTHORS and CONTRIBUTORS
    Jonathan Rockway "<jrockway@cpan.org>"

    Stevan Little "<stevan.little@iinteractive.com>"

    Tomas Doran "<bobtfish@bobtfish.net>"

    Matt S. Trout "<mst@shadowcatsystems.co.uk>"

    Jesse Luehrs "<doy at tozt dot net>"

    Shawn Moore "<sartak@bestpractical.com>"

    Florian Ragwitz "<rafl@debian.org>"

    Chris Prather "<chris@prather.org>"

    Yuval Kogman "<nothingmuch@woobling.org>"

COPYRIGHT AND LICENSE
    Copyright 2008 Infinity Interactive, Inc.

    <http://www.iinteractive.com>

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

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