slapos_accounting: Extend the invoice causality with the parent simulation movement explanation

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

@@ -3,6 +3,9 @@ the new Invoice.
 """
 from Products.ERP5Type.Message import translateString
 from DateTime import DateTime
+
+portal = context.getPortalObject()
+
 if related_simulation_movement_path_list is None:
   raise RuntimeError, 'related_simulation_movement_path_list is missing. Update ERP5 Product.'
 
@@ -11,17 +14,19 @@ price_currency = invoice.getPriceCurrency()
 if invoice.getResource() != price_currency:
   invoice.setResource(price_currency)
 
-if invoice.getCausality(None) is None:
-  causality_list = []
-  for line in invoice.objectValues():
-    related_delivery = line.getDeliveryRelatedValue()
-    if related_delivery is not None:
-      root_applied_rule = related_delivery.getRootAppliedRule()
-      if root_applied_rule is not None:
-        causality = root_applied_rule.getCausality()
-        if causality is not None and causality not in causality_list:
+# Extend the invoice causality with the parent simulation movement explanation
+# usually, Sale Packing List
+causality_list = invoice.getCausalityList()
+for simulation_movement in related_simulation_movement_path_list:
+  simulation_movement = portal.restrictedTraverse(simulation_movement)
+  applied_rule = simulation_movement.getParentValue()
+  if applied_rule.getParentId() != 'portal_simulation':
+    causality = applied_rule.getParentValue().getExplanationValue()
+    if causality is not None:
+      causality = causality.getRelativeUrl()
+      if causality not in causality_list:
         causality_list.append(causality)
-  invoice.setCausalityList(causality_list)
+invoice.setCausalityList(causality_list)
 
 # Link the Invoice to the original Deposit payment
 # this allow the invoice and payment to be automatilly grouped (lettering)