Added method getViewPermissionOwner to retrieved Owner user ID whenever Owner...

Added method getViewPermissionOwner to retrieved Owner user ID whenever Owner has View permission. Please suggest better name if you can.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@13059 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/Base.py

@@ -33,6 +33,7 @@ import ExtensionClass
 from Globals import InitializeClass, DTMLFile, PersistentMapping
 from AccessControl import ClassSecurityInfo
 from AccessControl.Permission import pname, Permission
+from AccessControl.PermissionRole import rolesForPermissionOn
 from Acquisition import aq_base, aq_inner, aq_acquire, aq_chain
 import OFS.History
 
@@ -357,11 +358,14 @@ def initializePortalTypeDynamicWorkflowMethods(self, klass, prop_holder):
                                       method_id)
             else:
               # Wrap method into WorkflowMethod is needed
-              if getattr(klass,method_id,None) is not None:
+              if getattr(klass, method_id, None) is not None:
                 method = getattr(klass, method_id)
                 if callable(method):
                   if not isinstance(method, WorkflowMethod):
                     method = WorkflowMethod(method, method_id)
+                    # We must set the method on the klass
+                    # because klass has priority in lookup over
+                    # _ac_dynamic
                     setattr(klass, method_id, method)
               else:
                 method = getattr(prop_holder, method_id)
@@ -1419,6 +1423,18 @@ class Base( CopyContainer,
 
     return tuple(permission_list)
 
+  security.declareProtected( Permissions.AccessContentsInformation, 'getViewPermissionOwner' )
+  def getViewPermissionOwner(self):
+    """
+      Returns the user ID of the owner if Owner role
+      has View permission. Returns None else.
+    """
+    path, user_id = self.getOwnerTuple()
+    if 'Owner' in rolesForPermissionOn(Permissions.View, self):
+      path, user_id = self.getOwnerTuple()
+      return user_id
+    return None
+
   # Private accessors for the implementation of relations based on
   # categories
   security.declareProtected( Permissions.ModifyPortalContent, '_setValue' )