InteractionWorkflow: check the object still exists when executing before commit

This fixes several unit tests (with not executable activities) where an object
is created and deleted in the same transaction, whereas an interaction
(ex: document_security_interaction_workflow) creates activities for this object
just before committing. The 'flush' happens earlier.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@42281 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/InteractionWorkflow.py

@@ -303,8 +303,9 @@ class InteractionWorkflowDefinition (DCWorkflowDefinition, ActiveObject):
 
               # Execute Before Commit
               for script_name in tdef.before_commit_script_name:
-                script = self.scripts[script_name]
-                transaction.get().addBeforeCommitHook(script, (sci,))
+                del sci.object
+                transaction.get().addBeforeCommitHook(self._before_commit,
+                  (sci, ob.getPhysicalPath(), script_name))
 
               # Execute "activity" scripts
               for script_name in tdef.activate_script_name:
@@ -312,6 +313,13 @@ class InteractionWorkflowDefinition (DCWorkflowDefinition, ActiveObject):
                     .activeScript(script_name, ob.getRelativeUrl(),
                                   status, tdef.id)
 
+    def _before_commit(self, sci, path, script_name):
+      try:
+        sci.object = self.unrestrictedTraverse(path)
+      except KeyError:
+        return
+      self.scripts[script_name](sci)
+
     security.declarePrivate('activeScript')
     def activeScript(self, script_name, ob_url, status, tdef_id):
           script = self.scripts[script_name]