+sub init_all_parts_time_unit {
+ my ($self) = @_;
+
+ return [] unless $self->h_unit_name;
+
+ my @convertible_unit_names = map { $_->name } @{ SL::DB::Manager::Unit->find_by(name => $self->h_unit_name)->convertible_units };
+
+ return SL::DB::Manager::Part->get_all_sorted(where => [ unit => \@convertible_unit_names ]);
+}
+