On Mon, 2007-22-10 at 11:36 -0500, Lukasz Szybalski wrote:
> Hello,
> I am trying to force a user to put in a 4 character year 1999,2004 etc
> How do I do it in validators?
>
> This code below gives me a number and size of the field. Is there
> another attribute that will force it to be 4 long?
>
> YEAR=widgets.TextField(validator=validators.Number(not_empty='True'),attrs={'size':4})
>
> Lucas
Hi Lucas, you should look in the turbogears docs and formencode docs for
how to make your own validator by subclassing Fancy Validator. It's not
too hard, and once you've done it once, it's dead easy to do it the rest
of time, allowing you to cusomize exactly how your constraints combine
and what error messages you want to produce.
The other option is to combine the above with the regular expression
validator and pass in the re "\d{4}" or "\d\d\d\d". However, that won't
let you as easily put in reasonable limits too. With a custom one you
could make it accept and convert only a sensible range of years.
Iain
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