Thanks for all the help again. It should have been obvious to me
before but I am sure the problem is that values coming back from
get_last_names() are different when the form is generated compared to
when it is validated. So I really need to just get the list of last
names once and it use it both times.
The question is how to do that. Does this look like a good approach? I
tried it and it seems to work.
if request.vars:
db.reg_test.last_name.requires = IS_IN_SET( session.last_names,
zero = "Select a Last Name" )
else:
session.last_names = get_last_names()
db.reg_test.last_name.requires = IS_IN_SET( session.last_names,
zero = "Select a Last Name" )
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