+sub action_delete {
+ my ($self) = @_;
+
+ # allow deletion of unused Buchungsgruppen. Will fail, due to database
+ # constraint, if Buchungsgruppe is connected to a part
+
+ my $db = $self->{config}->db;
+ $db->do_transaction(sub {
+ my $taxzone_charts = SL::DB::Manager::TaxzoneChart->get_all(where => [ buchungsgruppen_id => $self->config->id ]);
+ foreach my $taxzonechart ( @{$taxzone_charts} ) { $taxzonechart->delete };
+ $self->config->delete();
+ flash_later('info', $::locale->text('The buchungsgruppe has been deleted.'));
+ }) || flash_later('error', $::locale->text('The buchungsgruppe is in use and cannot be deleted.'));
+
+ $self->redirect_to(action => 'list');
+
+}
+