On Thu, 2007-11-29 at 13:15 -0800, mamcxyz wrote:
> I have a model of events and city.
>
> class Event(models.Model):
> city = models.ForeignKey(City, blank=True, null=True,
> core=True, verbose_name='ciudad')
>
> Then, I wanna let the user filter the events by city. But I don't
> wanna show ALL the city, because a lot can't have events attached. So,
> Exist New York, Miami & Chicago, but only chnicago have events.
>
> How get all the citys that have a event?
This should be close:
City.objects.filter(event__pk__isnull=False).distinct()
Regards,
Malcolm
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