我有一个类,比如GetStudentDetails,我正在使用一个序列化程序,序列化程序MethodField,比如posal\u address,我希望根据这个字段对结果进行排序
我尝试过添加ordering=('posal\u address',),由于它不是一个模型字段,所以遇到了错误。你知道吗
class GetStudentDetails(viewsets.GenericViewSet, mixins.ListModelMixin):
model = Student
queryset = Student.objects.all()
serializer_class = StudentCreateSerializer
filter_backends =
(filters.OrderingFilter,filters.DjangoFilterBackend,)
class StudentCreateSerializer(serializers.ModelSerializer):
postal_address = serializers.SerializerMethodField()
def get_postal_address(self, obj):
return Address.objects.get(name=obj.name).address
class Meta:
model = Vehicle
fields = ('name','city','state',postal_address')
class Address(models.Model):
name=models.ForeignKey(Student, on_delete=models.CASCADE)
address=models.CharField(max_length=60)
class Student(models.Model):
name=models.CharField(max_length=45)
city=models.CharField(max_length=10)
state=models.CharField(max_length=10)
def __str__(self):
return name
实际结果:
[{"name":test",
"city":"abc",
"state":"def",
"postal_address":"abcdef"
},
{
"name":"test2",
"city":"aa",
"state":"bb",
"postal_address":"aabb"
}]
预期结果:
[{
"name":"test2",
"city":"aa",
"state":"bb",
"postal_address":"aabb"
},
{"name":test",
"city":"abc",
"state":"def",
"postal_address":"abcdef"
}]
我会尝试按您组合的两个字段排序:
更新:
根据您更改的标准,尝试:
尽管根据this post,这种方法存在一些问题,答案者通过将排序硬编码到相关模型中来解决。所以在你的情况下:
然后在另一个模型/序列化程序中:
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