[web2py] session[id]=Storage(id=id) problem

[Annet]

I have a router function in which I have the following lines of code:

session[id]=Storage(id=id)
    session[id].accountID=ADVANCEDACCOUNTID
    session[id].pluralID=account.pluralID
    redirect(URL('site','index',args=id))

in site/index/id I store settings in session[id]: 

if not session[id].sitenav:
    retrieve setting and store in session[id]
    ....
    session[id].sitenav=True
if not session[id].aboutnav
    ....
etc.


In a cms users can change these settings, to make these changes visible in 
site/index/id I thought I could do:

form=crud.update(table=db.nodeNav,record=row,onaccept=onaccept_functions,deletable=False)

def onaccept_functions(form):
    id=get_ID(auth,session)
    if session[id]:
        if session[id].sitenav:
            session[id].sitenav=False
        if session[id].aboutnav:
            session[id].aboutnav=False

However, session[id].sitenav results in an attribute error: 

AttributeError: 'NoneType' object has no attribute 'sitenav'


I don't understand why, site/index/6 displays the index page and allows me 
to navigate through the application based on id=6. {{=session}} in a view 
shows the content of session including sitenav=True, but {{=session[6]}} 
displays None.

Is there an other way to have the index function reset the settings?


Kind regards,

Annet.


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