+ if (!$params{ar_id}) {
+ my $chart = SL::DB::Manager::Chart->get_all(query => [ SL::DB::Manager::Chart->link_filter('AR') ],
+ sort_by => 'id ASC',
+ limit => 1)->[0];
+ croak("No AR chart found and no parameter `ar_id' given") unless $chart;
+ $params{ar_id} = $chart->id;
+ }