X-Git-Url: http://wagnertech.de/git?a=blobdiff_plain;f=SL%2FDB%2FInvoice.pm;h=c330084edcd8ecf38552257540afb49a55955e87;hb=07d65516a53475a8f40714da7b4d2f906cb62804;hp=91ee14c8584f404f23e50535c98d2b041a2a94cb;hpb=0e25aa33f76f465486d5fc36d23eabc829a7c29d;p=kivitendo-erp.git

diff --git a/SL/DB/Invoice.pm b/SL/DB/Invoice.pm
index 91ee14c85..c330084ed 100644
--- a/SL/DB/Invoice.pm
+++ b/SL/DB/Invoice.pm
@@ -93,7 +93,7 @@ sub taxamount {
   my $self = shift;
   die 'not a setter method' if @_;
 
-  return $self->amount - $self->netamount;
+  return ($self->amount || 0) - ($self->netamount || 0);
 }
 
 __PACKAGE__->meta->make_attr_helpers(taxamount => 'numeric(15,5)');
@@ -236,6 +236,22 @@ sub _post_update_allocated {
   }
 }
 
+sub invoice_type {
+  my ($self) = @_;
+
+  return 'ar_transaction'     if !$self->invoice;
+  return 'credit_note'        if $self->type eq 'credit_note' && $self->amount < 0 && !$self->storno;
+  return 'invoice_storno'     if $self->type ne 'credit_note' && $self->amount < 0 &&  $self->storno;
+  return 'credit_note_storno' if $self->type eq 'credit_note' && $self->amount > 0 &&  $self->storno;
+  return 'invoice';
+}
+
+sub displayable_state {
+  my $self = shift;
+
+  return $self->closed ? $::locale->text('closed') : $::locale->text('open');
+}
+
 1;
 
 __END__