slapos_accounting: creation causality link between the deposit payment and invoice

master/bt5/slapos_accounting/SkinTemplateItem/portal_skins/slapos_simulation/SaleInvoiceTransaction_postSlapOSGeneration.py

@@ -23,6 +23,14 @@ if invoice.getCausality(None) is None:
           causality_list.append(causality)
   invoice.setCausalityList(causality_list)
 
+# Link the Invoice to the original Deposit payment
+# this allow the invoice and payment to be automatilly grouped (lettering)
+if invoice.getCausality(None) is not None:
+  new_causality = invoice.getCausalityValue()
+  original_payment = new_causality.getCausalityValue(None, portal_type="Payment Transaction")
+  if original_payment is not None:
+    original_payment.setCausalityList(original_payment.getCausalityList() + [invoice.getRelativeUrl()])
+
 
 comment = translateString('Initialised by Delivery Builder.')