The 'requires' attribute of a field has to be a validator or list of
validators (validators are callable objects), not just any boolean test. I
think you'll need a custom validator:
http://web2py.com/book/default/chapter/07#Custom-Validators. You might also
consider using an 'onvalidation' function with your form:
http://web2py.com/book/default/chapter/07#onvalidation.
Anthony
On Friday, April 22, 2011 3:35:22 AM UTC-4, 黄祥 wrote:
> hi,
>
> is it possible to compare db field datetime during form validation?
> e.g.
> db.define_table('duration',
> Field('from',
> 'datetime',
> requires = IS_DATE()
> ),
> Field('to',
> 'datetime',
> requires = [IS_DATE(),
> request.vars.from < request.vars.to]
> )
> )
>
> an error occured said:
> TypeError: 'bool' object is not callable
>
> also i tried:
>
> db.define_table('duration',
> Field('from',
> 'datetime',
> requires = IS_DATE()
> ),
> Field('to',
> 'datetime',
> requires = [IS_DATE(),
> form.vars.from < form.vars.to]
> )
> )
>
> an error occured said :
> NameError: name 'form' is not defined
>
> does anyone have a clue to solve it?
>
> thank you very much for your kind attention
