我有这样的模型:
class Program(models.Model):
votes_sum = models.IntegerField(max_length=10, default=0)
voters_counter = models.IntegerField(max_length=10, default=0)
...
我需要10个评分最高的程序,所以,我在我的views.py中尝试过:
best_rated = Program.objects.filter(Q(creator__profile__type ='us')).extra(select = {'total':'votes_sum/votes_counter'}).extra(order_by = ['total'])[:10]
问题是当没有用户投票时,因为发生了除零.
我找不到另一种方法来解决这个问题.有帮助吗？请.
我有一个比我想象的更简单的解决方案.只需排除没有投票的记录!
best_rated = Program.objects.filter(Q(creator__profile__type ='us')&~Q(votes_counter = 0)).extra(select = {'total':'votes_sum/votes_counter'}).extra(order_by = ['total "])[10]