[albatross-users] User input sought

[Dave Cole]

>>>>> "Andrew" == Andrew McNamara <andrewm at object-craft.com.au> writes:

>>> Another possible option is to have add_session_vars raise an
>>> exception if the variable doesn't already exist
>>  The problem I've run into a few times is having multiple paths
>> into the current page, some of which set 'blah' into the session
>> (with an appropriate value), some of which don't.
>> 
>> So I do something like: ctx.add_session_vars('blah') try:
>> ctx.locals.blah except AttributeError: ctx.locals.blah = 1 which is
>> ugly and long_winded.

Andrew> Yep - Dave and I have been considering this - I also find
Andrew> myself doing something like the above all the time. I guess a
Andrew> setdefault() method for ctx.locals has the virtue of mirroring
Andrew> the setdefault() method for mapping types. I'm not sure I like
Andrew> the idea of poluting the locals namespace, however.

Andrew> I guess my perfered option is a default_session_vars() method
Andrew> that both registers and, if not already set, sets session
Andrew> vars. Should it set one variable at a time, or should it take
Andrew> tuples as args? I think I'd prefer the former - less chance of
Andrew> mistakes.

Perhaps

    ctx.default_session_var(name, value)

- Dave

-- 
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