Hi Iam very new to web2py.
According to my understanding, if the c value is greater than zero the c
value has to be displayed.
I used the same code as yours but I did not see the c value printed.
Can you please clarify if Iam understanding it wrong.
On Friday, December 23, 2011 at 3:13:04 PM UTC-6, Massimo Di Pierro wrote:
>
> onvalidation = my_form_processing
>
> registers a callback (called after validation and before accepting).
> This does not work
>
> def my_form_processing(table_name, form): form.vars.field1 =
> table_name # I know useless, it just
>
> because the callback function must take a single parameter, the form.
> You can do instead
>
> def my_form_processing(form):
> form.vars.field1 = form.table.name # I know useless, it just
>
> Hope this helps.
>
>
> On Dec 23, 1:32 pm, Richard <ml.richard.vez...@gmail.com> wrote:
> > Hello,
> >
> > In the book there is this example :
> >
> > db.define_table('numbers',
> > Field('a', 'integer'),
> > Field('b', 'integer'),
> > Field('c', 'integer', readable=False, writable=False))
> >
> > def my_form_processing(form):
> > c = form.vars.a * form.vars.b
> > if c < 0:
> > form.errors.b = 'a*b cannot be negative'
> > else:
> > form.vars.c = c
> >
> > def insert_numbers():
> > form = SQLFORM(db.numbers)
> > if form.process(onvalidation=my_form_processing).accepted:
> > session.flash = 'record inserted'
> > redirect(URL())
> > return dict(form=form)
> >
> > Where "my_form_processing" function is called without bracket and
> > arguments...
> >
> > I try to do this that failed :
> >
> > def my_form_processing(table_name, form):
> > form.vars.field1 = table_name # I know useless, it just
> > demonstration for purpose of my question...
> >
> > ...
> >
> > if form.process(onvalidation=my_form_processing(request.args(0),
> > form)).accepted:
> >
> > Then I did :
> >
> > def my_form_processing(form):
> > form.vars.field1 = request.args(0)
> >
> > ...
> >
> > if form.process(onvalidation=my_form_processing).accepted:
> >
> > That actually works...
> >
> > I would like to make sure that I understand onvalidation properly...
> >
> > Is "my_form_processing" just a extension of the "insert_numbers()"
> > function?
> >
> > And if so, does it have access to all the same variables
> > (environnement) of "inser_numbers()"??
> >
> > Thank you!
> >
> > Richard
--
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- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
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