projekt kivitendo

  my $sort_by_str = $sort_spec->{columns}->{$sort_by};

  $sort_by_str    = [ $sort_by_str ] unless ref($sort_by_str) eq 'ARRAY';

  push @$sort_by_str, @{ $sort_spec->{tiebreaker} };

  $sort_by_str    = join(', ', map { "${_} ${sort_dir_str}${nulls_str}" } @{ $sort_by_str });