+# edit a collective order (consisting of one or more existing orders)
+sub action_edit_collective {
+ my ($self) = @_;
+
+ # collect order ids
+ my @multi_ids = map {
+ $_ =~ m{^multi_id_(\d+)$} && $::form->{'multi_id_' . $1} && $::form->{'trans_id_' . $1} && $::form->{'trans_id_' . $1}
+ } grep { $_ =~ m{^multi_id_\d+$} } keys %$::form;
+
+ # fall back to add if no ids are given
+ if (scalar @multi_ids == 0) {
+ $self->action_add();
+ return;
+ }
+
+ # fall back to save as new if only one id is given
+ if (scalar @multi_ids == 1) {
+ $self->order(SL::DB::Order->new(id => $multi_ids[0])->load);
+ $self->action_save_as_new();
+ return;
+ }
+
+ # make new order from given orders
+ my @multi_orders = map { SL::DB::Order->new(id => $_)->load } @multi_ids;
+ $self->{converted_from_oe_id} = join ' ', map { $_->id } @multi_orders;
+ $self->order(SL::DB::Order->new_from_multi(\@multi_orders, sort_sources_by => 'transdate'));
+
+ $self->action_edit();
+}
+