class Message(models.Model):
subject = models.CharField(max_length=100)
pub_date = models.DateTimeField(default=datetime.now())
class Topic(models.Model):
title = models.CharField(max_length=100)
message = models.ManyToManyField(Message, verbose_name='Discussion')
I want to get order all the topics according to the latest message object attached to that topic. I executed this query but this does not give the distinct queryset.
>> Topic.objects.order_by('-message__pub_date').distinct()