On Jun 3, 11:31 pm, dlin <[email protected]> wrote: > There is a field which I want user to enter different answer, or just > keep in empty.
empty, or unique answer: db.table.answer.requires=IS_NULL_OR( IS_NOT_IN_DB( db, 'table.answer' ) ) > > I've tried by: > > db.table.field.requires=IS_NOT_IN_DB(db, 'table.field') > > But, it will failed, if the second empty field entered. > > How could I do the validation for this case? > Is there any method?
