Let's say there's a Room model.  And let's say there's a ManyToMany
relationship with User to specify which users can schedule certain
rooms.  How should a person in such a circumstance create a SelectField
on a form with a user's rooms as choices?  Or more generally, how should
I go about changing a field's parameters based on information that can't
be known until the form is instantiated?

My instinct is to override __init__ on the form to provide choices to
it, which then overrides room_field.choices.  Is that right, or is there
a cleaner or more idiomatic way of doing it?

(And by the way, Adrian, thanks for the select date widget.  It's
exactly what I was looking for and has served as a great model for
similar widgets.)

-- 
Brian


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