Json 仅返回响应中的资助字段（Django Rest SearchFilter）

我有

ViewSet

，在

filter\u后端中有
SearchFilter
和两个search\u字段。如何返回JSON表示的唯一字段结果？
例如，如果我使用“jo”子字符串发送搜索响应，则此搜索只有一个字段（用户名或全名），而不是每个JSON对象中的用户名和电子邮件：

{
    [{
        "username": "jonh";
     },
     {
        "fullname": "Jonh";
     },
     {
        "username": "jo";
     },
     {
        "fullname": "Johnson";
     }
    ]
}

viewsets.py：

class UserViewSet(mixins.RetrieveModelMixin,
                  mixins.UpdateModelMixin,
                  mixins.ListModelMixin,
                  viewsets.GenericViewSet):

    queryset = User.objects.all()
    permission_classes = (IsUserOrReadOnly,)
    filter_backends = (filters.SearchFilter,)
    search_fields = ('^username', '^fullname',)

    def get_serializer_class(self):
        if hasattr(self, 'action') and self.action == 'list':
            return UserListSerializer
        return UserDetailSerializer

serializers.py：

class UserListSerializer(serializers.ModelSerializer):

    class Meta:
        model = User
        fields = ('id', 'username', 'email', 'fullname')

我将创建一个序列化程序工厂函数，该函数将搜索参数作为参数：

def generate_user_list_serializer(search_terms):

    class UserListSerializer(serializers.ModelSerializer):

        class Meta:
            model = User
            fields = tuple(search_terms)

    return UserListSerializer

然后在您看来，让序列化程序动态生成：

def get_serializer_class(self):

    # make sure that the fields are available
    validated_params = [p for p in self.query_params if p in Myfields]

    return generate_user_list_serializer(self.query_params)