Thank you, I originally had featured_place as a foreign key and ran
into a problem:
null value in column "featured_id" violates not-null constraint
That is because before there is a place there has to be a city.
On Apr 19, 9:37 pm, Doug B <[EMAIL PROTECTED]> wrote:
> > What is the best practice for making it so when I toggle is_featured
> > to on for Balboa Park the admin enforces a rule that only one place
> > can be featured for a city. Hope that makes sense, thank you.
>
> You could override save on Place and unset the other places. Although
> I think it might be better to change your models slightly:
>
> class City(models.Model):
> city = models.CharField(max_length=100, unique=True)
> featured_place=models.ForeignKey('Place')
>
> class Place(models.Model):
> city = models.ForeignKey(City)
> title = models.CharField(max_length=255)
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