[Zope3-Users] New Request Variable?

[Jean-Marc Orliaguet]

Jim Washington wrote:
> I have an expensive function (the result is a long list of IntIds) 
> that I only want to call once in a request.  It only gets calculated 
> the first time it is called, and the results may be used anytime after 
> that.  But only for the current request.  A subsequent request has to 
> recalculate from the beginning.
>
> Session is the wrong place to stash this.  I do not want want it to 
> persist beyond the current request.
>
> Request is also the wrong place.  It's slotted; I cannot add variables.
>
> So where is the proper place to hold on to something like this just 
> for the duration of one request?
>
> Suggestions (or solutions), anyone?  I fear I may have missed 
> something obvious.
>
> -Jim Washington

Hi, use request annotations, they're writable:

self.request.annotations['namespace.var'] = var
self.request.annotations.get('namespace.var')

/JM