Found it:
http://docs.djangoproject.com/en/dev/ref/contrib/admin/#adding-custom-validation-to-the-admin
Thanks anyway... :-)
Diogo
On May 27, 6:16 pm, diogobaeder <diogobae...@gmail.com> wrote:
> Thanks a lot, V! That answers my question...
>
> I agree with you at the architecture point... could you provide a URL
> to documentation concerning specific form validation inside the admin
> site?
>
> Diogo
>
> On May 27, 5:36 am, V <viktor.n...@gmail.com> wrote:
>
> > On May 27, 5:56 am, Diogo Baeder <diogobae...@gmail.com> wrote:
>
> > > Hi,
>
> > > I've got two fields, in a model object: "from_date" and "to_date". How
> > > can I make the admin controller or model validate if the "from_date"
> > > field has always a lower value than "to_date"? Both are
> > > "django.db.models.DateField", but how can I create a validation between
> > > them?
>
> > > Thanks!
>
> > There are at least two answers to this questions :)
>
> > First you can add this logic in your model's save method, and raise a
> > ValueError if incoherent data gets there.
>
> > def save(self, force_insert=False, force_update=False):
> > if self.to_date<self.from_date:
> > raise ValueError("You shouldn't get here with these data. Please
> > contact someone!")
> > super(MyModel, self).save(force_insert, force_update)
>
> > Second, clearly, incoherent data should never get to the model level,
> > but should be traped at form validation. So you should write a form
> > that implements a clean method where you can check the dates. This
> > holds true even if you submit the data only over the admin interface!
>
> > V
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