[Zope] Persistant session.

[Brenton Bills]

Greetings guys,

We have a small demo site that we would like to record who vists and
if they come back give a little message saying we know who they are
and we welcome them back. To do this I am using Session. The thing is
we want the data to be persistant so we are attempting to write the
data out to a db.

So we set the add/del to be two python scripts.

our add one is something like this,

args==item,container.
<start>
ZopeID = container.browser_id_manager.getBrowserId()

records = container.sqlLstSession(zsession_key=ZopeID)

if len(records) == 0:
    # Database hold no session row for this session
    # Create a new row for this session
    container.sqlInsSession(zsession_key=ZopeID)

# Regardless of wether we just created the session row, or one existed already, update it with item
container.sqlUpdSessionData(zsession_key=ZopeID, zsession_value=item)

</end>

Except when we call REQUEST.SESSION.set('test_item','test_value'), the data in the
contents of the SESSION data structure contains no data, eg.

demo=# select * from zsession_data;
    zsession_key     |                           zsession_value
---------------------+--------------------------------------------------------------------
 76055663A0wuh14y-MQ | id: 10500762450365664153, token: 76055663A0wuh14y-MQ, contents: []
(1 row)

Have we done something wrong in where we presume the update gets called? How do we
get just the contents of the item?

Regards,
Brenton Bills.