我想按平均收视率排序所有故事,当我输入url ... / stories?ordering = average_rating时会出现错误:'list' object has no attribute 'model'
def get_queryset(self):
queryset = Story.objects.all()
ordering = self.request.query_params.get('ordering', None)
if ordering == 'average_rating':
return sorted(queryset, key=lambda s: s.average_rating)
return queryset
class Story(models.Model):
...
@property
def average_rating(self):
average_rating = self.ratings.all().aggregate(Avg('rating'))['rating__avg']
if average_rating is not None:
return round(float(average_rating), 2)
return None
[sorted(queryset, key=lambda s: s.average_rating)
这将返回一个列表,而get_queryset
应返回一个queryset
顾名思义,get_queryset
需要返回查询集,而不是列表。