gistfile1.pl

package MusicBrainz::Server::Controller::Artist;

BEGIN
{
    use Moose;
    extends 'MusicBrainz::Server::Controller';
    with 'MusicBrainz::Server::Controller::Annotation';
}

__PACKAGE__->config(
    model       => 'Artist',
    entity_name => 'artist',
);

# ...

# ----------

package MusicBrainz::Server::Controller::Annotation;
use Moose::Role;

sub latest : Chained('entry') PathPart('annotation') CaptureArgs(1)
{
    my ($self, $c, $gid) = @_;

    my $entity = $c->stash->{$self->{entity_name}};
    my $annotation = $c->model($self->{model})->annotation->get_latest($entity->id);

    $c->stash(
        annotation => $annotation,
    );
}

sub view : Chained('latest') PathPart('') { }

no Moose::Role;
1;

# --------