Hi eleith,
How about following using validator instead?
class AtLeastOne(ForEach):
validator = Int
def _to_python(self, value, state=None):
value = super(AtLeastOne, self)._to_python(value, state)
if len(value) < 1:
raise Invalid("at least one item must be selected",
value, state)
return value
I got same error before, and found the following post.
http://groups.google.com/group/toscawidgets-discuss/browse_thread/thread/a5bf406e8d63c739?tvc=2&q=MultipleSelectionMixin&pli=1
On 1ζ26ζ₯, εεΎ7:33, eleith <[email protected]> wrote:
> for my schema, i want to handle
> ----------------------------------------
> delete?id=100
> delete?id=100&id=101&id=102
>
> and throw an error for
>
> delete?
> -----------------------------------------
> my validators look like this:
>
> id = ForEach(Int(), not_empty=True, convert_to_list=True)
>
> however, this passes when even when i don't pass in an 'id'
>
> i've even tried
>
> All(NotEmpty(), ForEach(....))
>
> that doesn't work either. i've ended up writing my own function and
> subclassing into SimpleFormValidator to handle this case for me (i
> just check if the len(values['id']) < 1, and return an error message)
>
> so either i'm going about this the wrong way, or there is an error in
> ForEach and/or All.
>
> any suggestions? (although, i'm happy with my solution, just thought i
> would publish my findings)
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