if causality state is still draft, we don't need to call diverge() or solve()...

if causality state is still draft, we don't need to call diverge() or solve() and it causes an exception if called.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@35629 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/Delivery.py

@@ -375,8 +375,10 @@ class Delivery(XMLObject, ImmobilisationDelivery, CompositionMixin):
       deliver is convergent, and if so it will put the delivery
       in a solved state, if not convergent in a diverged state
       """
-      if getattr(self, 'diverge', None) is not None \
-            and getattr(self, 'converge', None) is not None:
+      isTransitionPossible = \
+          self.getPortalObject().portal_workflow.isTransitionPossible
+      if isTransitionPossible(self, 'diverge') and \
+          isTransitionPossible(self, 'converge'):
         if self.isDivergent(**kw):
           self.diverge()
         else: