Question

我收到以下错误：

AttributeError: Got AttributeError when attempting to get a value for field `city` on serializer `SearchCitySerializer`

我的序列化器是正确的，除非我明显遗漏了一些东西。

这是我的模特：

class SearchCity(models.Model):
    city = models.CharField(max_length=200)

这是我的序列化程序

class SearchCitySerializer(serializers.ModelSerializer):
    class Meta:
        model = SearchCity
        fields = ('pk','city')

***我在字段中尝试了没有pk的序列化程序，但它仍然失败

在这里它用于视图：

 from serializers import SearchCitySerializer

 def get(self, request, format=None):
        searchcityqueryset = SearchCity.objects.all()
        serializedsearchcity = SearchCitySerializer(searchcityqueryset)

        return Response({
            'searchcity': serializedsearchcity.data,
        })

我得到的完整错误：

File "/home/rickus/Documents/softwareProjects/211hospitality/suitsandtables/backend/virtualsuits/suitsandtables/suitsandtablessettingsapp/views.py", line 37, in get
    'searchcity': serializedsearchcity.data,
  File "/home/rickus/Documents/softwareProjects/211hospitality/suitsandtables/backend/virtualsuits/local/lib/python2.7/site-packages/rest_framework/serializers.py", line 537, in data
    ret = super(Serializer, self).data
  File "/home/rickus/Documents/softwareProjects/211hospitality/suitsandtables/backend/virtualsuits/local/lib/python2.7/site-packages/rest_framework/serializers.py", line 262, in data
    self._data = self.to_representation(self.instance)
  File "/home/rickus/Documents/softwareProjects/211hospitality/suitsandtables/backend/virtualsuits/local/lib/python2.7/site-packages/rest_framework/serializers.py", line 491, in to_representation
    attribute = field.get_attribute(instance)
  File "/home/rickus/Documents/softwareProjects/211hospitality/suitsandtables/backend/virtualsuits/local/lib/python2.7/site-packages/rest_framework/fields.py", line 462, in get_attribute
    raise type(exc)(msg)
AttributeError: Got AttributeError when attempting to get a value for field `city` on serializer `SearchCitySerializer`.
The serializer field might be named incorrectly and not match any attribute or key on the `QuerySet` instance.
Original exception text was: 'QuerySet' object has no attribute 'city'.
[28/Feb/2018 02:41:43] "GET /api/dependancy/suitsadmin/settings/ HTTP/1.1" 500 20823

数据库目前在数据库中没有任何数据当前是空的

Answer 1

serializedsearchcity = SearchCitySerializer(searchcityqueryset)

更改为

serializedsearchcity = SearchCitySerializer(searchcityqueryset, many=True)

要序列化查询集或对象列表而不是单个对象实例，应在实例化序列化程序时传递many=True标志。然后，您可以传递要序列化的查询集或对象列表。

Dealing with multiple objects

序列化程序django rest framework

1 个答案: