Note, IS_IN_DB(..., multiple=True), which is the default validator for a
list:reference field, does allow zero options to be selected, so I suppose
the behavior of required=True was made consistent with the validator.
Perhaps that should be changed. In any case, using the validator, you can
do:
IS_IN_DB(db, 'mytable.id', db.mytable._format, multiple=[1, float('inf')])
The "multiple" argument to IS_IN_DB and IS_IN_SET can be a list/tuple
specifying minimum and maximum number of values.
Anthony
On Monday, September 2, 2013 5:31:33 AM UTC-7, Mirko wrote:
>
> Hi,
> I expected this to be validated when at least one entry is selected
> but validation let this pass when nothing is selected.
> Any ideas ?
>
> Thanks,
> Mirko
>
> PS: after validation, the correponding db field contains "||" which may be
> should be considered as an empty value by the DAL ?
>
>
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