[Zope-dev] SessionDataManager oddness

[Chris McDonough]

Mark,

Try putting the code which adds the session data manager from your class'
__init__ into a manage_afterAdd method of your class, e.g.:

def manage_afterAdd(self, item, container):
    ob = SessionDataManager(
      id='session_data_mgr', title='', path=None, timeout_mins=20)
    self._setObject('session_data_mgr', ob)

manage_afterAdd is called automagically by the _setObject machinery at init
time, but it gets the object in its acquisition-wrapped context.

----- Original Message -----
From: "Matt Hamilton" <matth@netsight.co.uk>
To: <zope-dev@zope.org>
Sent: Friday, March 02, 2001 5:19 AM
Subject: [Zope-dev] SessionDataManager oddness


> Dear All,
>   I am trying to add session tracking to a Product of mine.  I am trying
> to add a SessionDataManager to a Folderish object in the __init__ method
> of the class, but having troubles.  I think I am importing everything:
>
> from Globals import HTMLFile
> from Globals import Persistent
> from Globals import default__class_init__
> import Acquisition
> import AccessControl.Role
> import OFS.Folder
> from Products.ZCatalog import ZCatalog
> from Products.BTreeFolder import BTreeFolder
> from Products.CoreSessionTracking.SessionDataManager import
SessionDataManager
> from Products.CoreSessionTracking.SessionDataContainer import
SessionDataContainerMount
> from Products.CoreSessionTracking.SessionData import SessionData
> try:
>     from Products.CoreSessionTracking.SessioningInterfaces import
SessionDataManagerInterface
> except:
>     # pre-2.3 Zopes don't have an Interfaces module
>     class SessionDataManagerInterface:
>         pass
>
> then in my __init__ method:
>
 >       ob = SessionDataManager(
>         id='session_data_mgr', title='', path=None, timeout_mins=20)
>       self._setObject('session_data_mgr', ob)
>
> However I get an attribute error when trying to add an intance of the
> product.  _sdc not found.
>
> I have traced it using pdb, and from what I can find out it appears as if
> it fails in _setObject.  More specifically SessionDataContainerMount
> seems to not returning the correct thing.
>
> I have tried tracing the normal addition of a SessionDataManager in Zope
> and it works fine.  SessionDataContainerMount doesn't have an __init__
> method, but it looks like when I add a S.D.M via the normal web interface
> __of__ gets called, but when my product tries to add it __del__ gets
> called.
>
> Any ideas?  I am at the end of my Zope internals knowledge.... if there is
> anything else I can provide to help diagnose, let me know.
>
> TIA,
> Matt
>
> --
> Matt Hamilton                                         matth@netsight.co.uk
> Netsight Internet Solutions, Ltd.          Business Vision on the Internet
> http://www.netsight.co.uk                               +44 (0)117 9090901
> Web Hosting | Web Design  | Domain Names  |  Co-location  | DB Integration
>
>
>
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