Question

I have the relationship follow as:

class Question(models.Model):
  content = models.CharField(max_length=128)

class Answer(models.Model):
  content = models.CharField(max_length=128)
  question = models.ForeignKey(Question)
  num_vote = models.IntegerField()

I want to retrieve the answers, which have the max voting. I tried this statement but it isn’t correctly.

answers = Answer.objects.filter(question__exact=1).annotate(Max('num_vote'))

Answer 1

Some predefined number of answers? You you need e.g. 5 high-scored answers use

answers = Answer.objects.filter(question=somequestion).order_by('-num_vote')[:5]

If you need all the answers with max num_vote you need 2 queries.

max_score = Answer.objects.filter(question=somequestion).aggregate(score=Max('num_vote'))
answers = Answer.objects.filter(question=somequestion, num_vote=max_score['score'])