Yes, you are right but that is the case when you can compare the value from
one field with the one from another field. It's a bit complicated. There
are more than 2 fields and different cases like:
if field_1 == '"some value"'
if field_2 == "some value"
field_3 must be ....
if field_2 == "other value"
field_3 must be.....
Anyway, solved the issue (don't have the code here but as I recall it it
goes something like):
args = ()
args = args + (form inputs.....,)
class page():
def __init__(self): - will define validators and the form as class
variables
self.v=[] - this will hold the validators
self.myform =form.Form(validators=self.v, *args)
def GET()
define the classic GET here
def POST():
pdata = web.input(checkboxes_array_with_same_name=[])
if not self.myform.validates(pdata):
return render.page(self.myform)
else:
if pdata.some_input == do all the checks here
if pdata.some_other_input - do some other checks
and if necessary make another if
self.v.append(form.Validator("error message",
False)
self.myform = form.Form(validators=self.v,
*args)
return render.page(self.myform)
elif .....add additional restrictions based on any post data
received
else:
code for form valid
I don't see anything wrong with this approach, it loops the same page until
the form data is valid. Do you see something wrong?
On Thu, Jun 6, 2013 at 1:20 PM, Matteo Landi <[email protected]> wrote:
> On Wed, Jun 5, 2013 at 6:02 PM, Daniel Crisan <[email protected]>
> wrote:
> > Hello,
> >
> > I have a form with 2 inputs (textboxes, checkboxes, doesn't matter) and I
> > need to add a validator for another field only if one of the inputs is
> equal
> > to some value.
> >
> > Is this possible?
>
> Sure, by using a general form validator. Have a look at the following
> snippet:
>
> signup = form.Form(
> form.Textbox('username'),
> form.Password('password'),
> form.Password('password_again'),
> validators = [form.Validator("Passwords didn't match.", lambda i:
> i.password == i.password_again)]
> )
>
> As you can see, when you create a form you can pass an additional list
> of which that can work on the form as whole (i.e. access all the
> registered fields); there shouldn't be too hard to adapt the previous
> example to your specific use case.
>
> Please, get back to us if you need further help.
>
>
> Cheers,
>
> Matteo
>
>
> >
> > --
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