Django Rest框架模型排序过滤器方法
我有一个模型，它有计算平均评级的方法。如何将此方法添加到排序筛选器字段？我尝试使用FilterSet进行自定义筛选，但无法做到这一点。当我测试我的尝试时，我收到了错误。没有订单筛选的任何示例 我为“大于查找”的平均评分添加了一个筛选器，因为它在下面共享，但我无法为订单筛选添加该筛选器 模型类：Django Rest框架模型排序过滤器方法,django,django-rest-framework,django-filters,Django,Django Rest Framework,Django Filters,我有一个模型，它有计算平均评级的方法。如何将此方法添加到排序筛选器字段？我尝试使用FilterSet进行自定义筛选，但无法做到这一点。当我测试我的尝试时，我收到了错误。没有订单筛选的任何示例 我为“大于查找”的平均评分添加了一个筛选器，因为它在下面共享，但我无法为订单筛选添加该筛选器 模型类： class Establishment(models.Model): owner = models.ForeignKey(User, on_delete=models.PROTECT)
class Establishment(models.Model):
owner = models.ForeignKey(User, on_delete=models.PROTECT)
name = models.CharField(max_length=255, null= False, blank = False, unique=True)
description = models.TextField(max_length=360, blank = True, null=True)
address = models.TextField(max_length=360, blank = True, null=True)
phone = PhoneNumberField(null=False, blank=False)
city = models.CharField(max_length=15, null= False, blank = False)
district = models.CharField(max_length=50, null= False, blank = False)
latitude = models.DecimalField(max_digits=9, decimal_places=6, null=False, blank=False)
longitude = models.DecimalField(max_digits=9, decimal_places=6, null=False, blank=False)
cuisine = models.CharField(max_length=255, null= False, blank = False)
zipcode = models.IntegerField(null=True, blank=True)
average_price = models.IntegerField(blank = True, null=True)
profile_photo = models.ImageField(blank=True, null=True, upload_to=upload_path('profile_image'))
def no_of_ratings(self):
ratings = EstablishmentRating.objects.filter(establishment=self)
return len(ratings)
def average_rating(self):
ratings = EstablishmentRating.objects.filter(establishment=self)
return sum(rate.rating for rate in ratings) / (len(ratings) or 1)
def __str__(self):
return self.name
class EstablishmentViewSet(viewsets.ModelViewSet):
queryset = Establishment.objects.all()
serializer_class = EstablishmentSerializer
authentication_classes = (TokenAuthentication,)
filter_backends = (DjangoFilterBackend,filters.SearchFilter, filters.OrderingFilter,)
filterset_class = [EstablishmentFilter,]
search_fields = ['$name',"$cuisine"]
ordering_fields = ('name','average_rating','average_price','cuisine')