Using formencode.validators to validate a field as Int and NotEmpty

[Julian Yap]

Using formencode.validators, I have a field which accepts an Int. I
also want it to validate NotEmpty.

How can I add both validations? The Int validator also accepts an
empty field.

Below is what I have. I want field foo to also validate against being
NotEmpty.
----
from tw.api import WidgetsList
from tw.forms import TableForm, TextField, Spacer
from formencode.validators import Int, NotEmpty

class BazForm(TableForm):

show_errors = True

fields = [
TextField('bar', validator=NotEmpty),
TextField('foo', validator=Int(min=100, max=999))]

create_baz_form = BazForm("create_baz_form", action='savenew')

[Christoph Zwerschke]

Julian Yap schrieb:

> Using formencode.validators, I have a field which accepts an Int. I
> also want it to validate NotEmpty.
>
> How can I add both validations? The Int validator also accepts an
> empty field.

As most validators, Int also supports a "not_empty" option. I.e. you can
use Int(min=100, max=999, not_empty=True).

-- Christoph

[Marco Mariani]

Julian Yap wrote:
> Using formencode.validators, I have a field which accepts an Int. I
> also want it to validate NotEmpty.
>

I sugges you to Read The Formencode Manual

Two ways:

from formencode.validators import Int, NotEmpty, All

validator=Int(min=100, max=999, not_empty=True)

validator = All(Int(min=100, max=999), NotEmpty)

[Julian Yap]

Thanks all. That works for me. I am less confused.

Background noise: (... deletes the custom validator class...)