On Mar 29, 2009, at 9:35 AM, Matthew Somerville wrote:

>
> Jack Orenstein wrote:
>> On Mar 28, 2009, at 12:26 PM, Daniel Roseman wrote:
>>
>>> On Mar 28, 4:14 pm, Jack Orenstein <j...@geophile.com> wrote:
>>>> My application needs to validate data from a from beyond the
>>>> validation of Fields done by django. So in my form handler, I check
>>>> Form.is_valid, and if that returns true, then I do my own  
>>>> validation.
>
> If you have a field you need to perform more validation on, what you
> should do is give your Form subclass a clean_<fieldname>() method  
> which
> will be called automatically, and should raise a ValidationError if  
> the
> data doesn't validate (which will then put the error in the right  
> place
> for you). Then is_valid() will do Django and your validation together.
> For more information, see
> http://docs.djangoproject.com/en/dev/ref/forms/validation/

Thanks, that's really useful to know about. This works for most of  
the additional validation I need to do, but doesn't fit so well for  
the cross-field validation, (e.g. password and confirm_password  
fields match). Or can I do that by overriding Form.is_valid?

Jack


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