You do this in the validation:
http://docs.djangoproject.com/en/dev/ref/forms/validation/#cleaning-and-validating-fields-that-depend-on-each-other
-leond
On Sep 21, 11:34 pm, lance <lan...@gmail.com> wrote:
> Newbie question...
>
> In defining my model, I have two CharFields of a given class. The
> business logic requires that one or both of the fields be filled in.
> Either of the fields can be blank as long as the other one isn't.
>
> Is there a Django best practice way to solve this? Should this be
> handled in the Model or down stream in the View or...?
>
> I was thinking something along these lines would be useful...
>
> one = models.CharField(max_length=50, optional_blank='two')
> two = models.CharField(max_length=50, optional_blank='one')
>
> such that the "one" field can be optionally left blank if the two
> field is not blank and vice-versa.
>
> Additionally, the functionality could be extended out to include:
>
> three = models.CharField(max_length=50, optional_blank=('one', two',))
>
> such that the "three" field can be optionally left blank if both the
> one and two fields are not blank.
>
> Or should all of the fields be set to blank=True and the field
> requirements are handled downstream in the View?
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