On Thu, Jul 21, 2011 at 12:00 PM, Branko Vukelic <[email protected]> wrote:
> myForm = form.Form(
> ....
> validators = [
> form.Validator('You need at least one field,
> lambda i: any([not_empty(i.field1), not_empty(i.field2)...]),
> ]
> )
One more note. The reason I say ``not_empty(i.field)`` instead of just
saying ``i.field`` is that in Python, a string that contains multiple
spaces is also True. So you cannot rely on that. A not_empty would do
something like this:
def not_empty(s):
return s.strip() and True or False
It's a slightly more robust check.
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Branko Vukelić
[email protected]
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