Hi nysus, the intention of 
handles => 'Some::Role',

[download]
is that Some::Role simply acts as an interface i.e. it describes required methods but does not implement them.

There is an example of this in the Moose test suite: 

{
    package Foo::Bar;
    use Moose::Role;
 
    requires 'foo';
    requires 'bar';
 
    package Foo::Baz;
    use Moose;
 
    sub foo { 'Foo::Baz::FOO' }
    sub bar { 'Foo::Baz::BAR' }
    sub baz { 'Foo::Baz::BAZ' }
 
    package Foo::Thing;
    use Moose;
 
    has 'thing' => (
        is      => 'rw',
        isa     => 'Foo::Baz',
        handles => 'Foo::Bar',
    );
 
    package Foo::OtherThing;
    use Moose;
    use Moose::Util::TypeConstraints;
 
    has 'other_thing' => (
        is      => 'rw',
        isa     => 'Foo::Baz',
        handles => Moose::Util::TypeConstraints::find_type_constraint(
+'Foo::Bar'),
    );
}

[download]
Here you can see that the Foo::Bar role is used to specify delegation, but the actual methods are implemented in Foo::Baz.

In reply to Re: Delegating to a role in Moose by Arunbear
in thread Delegating to a role in Moose by nysus

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