[Zope] Keeping data throughout a session

[Michael.Rinner at cellzome.com]

Hi,

I've got the following problem:

I want to keep several choices users make during a site visit persistent 
in memory during their session. Not all of those fields appear on each 
page or are needed, but the values should still be available all the time 
so they can be used for various selections.

Now I could simply use hidden input fields and carry the values over and 
over from one page to another, but that seems quite an awkward way to do 
this. So I store them as Session data, which works fine so far except for 
if a user opens several browser windows, which however happens quite 
often. In that case, changes done in one window affect the selection in 
another window, as there is only one shared session object obviously.

Does anyone have an idea what the best way would be to handle this? I'd 
like to automatically keep values valid that are selected at random times 
for seperate windows and their subwindows, without affecting values stored 
for other windows. And all of that hopefully without major changes to 
various places in the DTML and script files...

Thanks in advance,

Michael Rinner
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