Accessor: Generate Portal Type accessors for transitions date of Workflow History.

product/ERP5Type/Accessor/WorkflowHistory.py

+##############################################################################
+#
+# Copyright (c) 2018 Nexedi SARL and Contributors. All Rights Reserved.
+#
+# WARNING: This program as such is intended to be used by professional
+# programmers who take the whole responsability of assessing all potential
+# consequences resulting from its eventual inadequacies and bugs
+# End users who are looking for a ready-to-use solution with commercial
+# garantees and support are strongly adviced to contract a Free Software
+# Service Company
+#
+# This program is Free Software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+#
+##############################################################################
+
+from Products.ERP5Type.PsycoWrapper import psyco
+from Base import Getter as BaseGetter
+from Acquisition import aq_base
+
+class Getter(BaseGetter):
+    """
+    Get a property from Workflow History. A default value can be
+    provided if needed.
+    """
+    def __init__(self, id, workflow_id, transition_id, key):
+      self._id = id
+      self.__name__ = id
+      self._workflow_id = workflow_id
+      self._transition_id = transition_id
+      self._key = key
+
+    def __call__(self, instance, default=None):
+      instance = aq_base(instance)
+      try:
+        workflow_history_dict_list = instance.workflow_history[self._workflow_id]
+      except (AttributeError, KeyError):
+        return default
+      else:
+        for workflow_history_dict in workflow_history_dict_list:
+          if workflow_history_dict['action'] == self._transition_id:
+            return workflow_history_dict.get(self._key, default)
+
+    psyco.bind(__call__)

product/ERP5Type/Base.py

@@ -481,6 +481,7 @@ def getClassPropertyList(klass):
         if p not in ps_list])
   return ps_list
 
+from Products.ERP5Type.Accessor.WorkflowHistory import Getter as WorkflowHistoryGetter
 def initializePortalTypeDynamicWorkflowMethods(ptype_klass, portal_workflow):
   """We should now make sure workflow methods are defined
   and also make sure simulation state is defined."""
@@ -518,6 +519,15 @@ def initializePortalTypeDynamicWorkflowMethods(ptype_klass, portal_workflow):
 
       storage = dc_workflow_dict
       transitions = wf.transitions
+
+      for transition in transitions.objectValues():
+        transition_id = transition.getId()
+        method_id = 'get%sTransitionDate' % UpperCase(transition_id)
+        if not hasattr(ptype_klass, method_id):
+          method = WorkflowHistoryGetter(method_id, wf_id, transition_id, 'time')
+          ptype_klass.registerAccessor(method,
+                                       Permissions.AccessContentsInformation)
+
     elif wf_type == "InteractionWorkflowDefinition":
       storage = interaction_workflow_dict
       transitions = wf.interactions