I searched for "compute" in the scribd document on the website and
didn't find this. It should be included as it is quite helpful.
On Feb 5, 11:42 pm, Thadeus Burgess <thade...@thadeusb.com> wrote:
> Is this not in the book or did I miss it?
>
> -Thadeus
>
>
>
> On Fri, Feb 5, 2010 at 5:34 AM, Adi <aditya.sa...@gmail.com> wrote:
> > Awesome, works as expected.
>
> > Only change is that the request variables were strings and had to be
> > converted into respective data types. Thanks a lot.
>
> > On Feb 5, 4:19 pm, hywang <why00...@163.com> wrote:
> >> something like this
> >> def _compute():
> >> return request.vars.in_time + request.vars.duration##
>
> >> db.define_table('mytable', Field('in_time','datetime'),
> >> Field('duration', 'integer'), Field('end_time','datetime', compute =
> >> _compute))
>
> >> On Feb 5, 6:51 pm, Adi <aditya.sa...@gmail.com> wrote:
>
> >> > Hi,
>
> >> > I have a table with 3 fields:
>
> >> > db.define_table('mytable', Field('in_time','datetime'),
> >> > Field('duration', 'integer'), Field('end_time','datetime'))
>
> >> > The user enters in_time and duration (in hours) in SQLFORM, but now I
> >> > want to calculate and store end_time using
> >> > end_time = in_time + timeinterval(hours = duration).
>
> >> > I'm not able to achieve this. How do I refer to a record's other
> >> > fields to specify default value of a field?
>
> >> > Thanks.
>
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