Getting a count of objects in a queryset in django

Question

How can I add a field for the count of objects in a database. I have the following models:

class Item(models.Model):
    name = models.CharField()

class Con         


        

Answer 1

Use related name to count votes for a specific contest

class Item(models.Model):
    name = models.CharField()

class Contest(models.Model);
    name = models.CharField()

class Votes(models.Model):
    user = models.ForeignKey(User)
    item = models.ForeignKey(Item)
    contest = models.ForeignKey(Contest, related_name="contest_votes")
    comment = models.TextField()

>>> comments = Contest.objects.get(id=contest_id).contest_votes.count()