TypeError repr（o）+“不是JSON可序列化的”

Question

这是我第一次使用rest框架。我正在尝试序列化我的家庭应用程序。在

文件模型.py：

class User(AbstractUser):
    """User model."""

    username = None
    email = models.EmailField(_('email address'), unique=True)
    location = map_fields.AddressField(max_length=200)
    preferred = models.ManyToManyField(Place, related_name='Preferred')
    disliked = models.ManyToManyField(Place, related_name='Disliked')
    maplocation = gis_models.PointField("longitude/latitude", geography=True, blank=False, null=True)
    USERNAME_FIELD = 'email'
    REQUIRED_FIELDS = []

    @classmethod
    def make_preferred(cls, current_email, new_pref_place):
        user, created = cls.objects.get_or_create(
            email=current_email
        )
        user.preferred.add(new_pref_place)

    @classmethod
    def remove_preferred(cls, current_email, pref_place):
        user, created = cls.objects.get_or_create(
            email=current_email
        )
        user.preferred.remove(pref_)lace

    @classmethod
    def make_dislike(cls, current_email, dislike_place):
        user, created = cls.objects.get_or_create(
            email=current_email
        )
        user.disliked.add(dislike_place)

    @classmethod
    def remove_dislike(cls, current_email, dislike_place):
        user, created = cls.objects.get_or_create(
            email=current_email
        )
        user.disliked.remove(dislike_place)

class Place(models.Model):
    name = models.CharField(max_length=200)
    id = models.UUIDField(primary_key=True, default=uuid.uuid4, help_text="Unique ID for this particular place across whole library")
    email = models.EmailField(max_length=70,blank=False)
    city = models.CharField('city', blank=False, default='Rabat', max_length=200, null=False)
    place_pic = models.ImageField(upload_to = 'pic_folder/', default = 'http://placehold.it/150x150', null= True)
    location = gis_models.PointField("longitude/latitude", geography=True, blank=False, null=True)
    #objects = gis_models.GeoManager()

    def __unicode__(self):
        return self.name, 'location'

文件视图.py：

^{pr2}$

文件序列化程序.py：

from rest_framework import serializers
from .models import Shop, User
from rest_framework_gis.serializers import GeoFeatureModelSerializer
from .views import *

class ShopSerializer(serializers.ModelSerializer):
    geo_field = "location"
    class Meta:
        model = Shop
        fields = ('location' ,'name', 'shop_pic')


 class UserSerializer(serializers.ModelSerializer):
    id = serializers.UUIDField(format='hex_verbose')
    geo_field = "maplocation"
    class Meta:
        model = User
        fields =  '__all__'

我有一个城市里的地方列表，想把它们显示给用户，我做了一个查询，按距离排序并显示在主页上，当我试图序列化时，我得到了这个错误：

Internal Server Error: /api/
Traceback (most recent call last):
File "~/.virtualenvs/my_django_environment/lib/python3.5/site-packages/django/core/handlers/exception.py", line 35, in inner
response = get_response(request)
File "~/.virtualenvs/my_django_environment/lib/python3.5/site-packages/django/core/handlers/base.py", line 158, in _get_response
response = self.process_exception_by_middleware(e, request)
File "~/.virtualenvs/my_django_environment/lib/python3.5/site-packages/django/core/handlers/base.py", line 156, in _get_response
response = response.render()
File "~/.virtualenvs/my_django_environment/lib/python3.5/site-packages/django/template/response.py", line 106, in render
self.content = self.rendered_content
File "~/.virtualenvs/my_django_environment/lib/python3.5/site-packages/rest_framework/response.py", line 72, in rendered_content
ret = renderer.render(self.data, accepted_media_type, context)
File "~/.virtualenvs/my_django_environment/lib/python3.5/site-packages/rest_framework/renderers.py", line 105, in render
allow_nan=not self.strict, separators=separators
File "~/.virtualenvs/my_django_environment/lib/python3.5/site-packages/rest_framework/utils/json.py", line 28, in dumps
return json.dumps(*args, **kwargs)
File "/usr/lib/python3.5/json/__init__.py", line 237, in dumps
**kw).encode(obj)
File "/usr/lib/python3.5/json/encoder.py", line 198, in encode
chunks = self.iterencode(o, _one_shot=True)
File "/usr/lib/python3.5/json/encoder.py", line 256, in iterencode
return _iterencode(o, 0)
File "~/.virtualenvs/my_django_environment/lib/python3.5/site-packages/rest_framework/utils/encoders.py", line 68, in default
return super(JSONEncoder, self).default(obj)
File "/usr/lib/python3.5/json/encoder.py", line 179, in default
raise TypeError(repr(o) + " is not JSON serializable")
TypeError: <Place: Place object (3773482c-862d-4cc3-b2dd-8967e00cd730)> is not JSON serializable
[18/Apr/2018 11:49:11] "GET /api/?format=json HTTP/1.1" 500 129970

我不知道这是否是最好的方法，但我正在努力得到一个最喜欢的地方列表和一个黑名单的地方。在

编辑问题 在使用@Jerin Peter George response之后，我得到一个关于http的错误状态码必须是一个整数

Internal Server Error: /api/
Traceback (most recent call last):
File "~/.virtualenvs/my_django_environment/lib/python3.5/site-packages/django/http/response.py", line 49, in __init__
self.status_code = int(status)
TypeError: int() argument must be a string, a bytes-like object or a number, not 'dict'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "~/.virtualenvs/my_django_environment/lib/python3.5/site-packages/django/core/handlers/exception.py", line 35, in inner
response = get_response(request)
File "~/.virtualenvs/my_django_environment/lib/python3.5/site-packages/django/core/handlers/base.py", line 128, in _get_response
response = self.process_exception_by_middleware(e, request)
File "~/.virtualenvs/my_django_environment/lib/python3.5/site-packages/django/core/handlers/base.py", line 126, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "~/.virtualenvs/my_django_environment/lib/python3.5/site-packages/django/contrib/auth/decorators.py", line 21, in _wrapped_view
return view_func(request, *args, **kwargs)
File "~/.virtualenvs/my_django_environment/lib/python3.5/site-packages/django/views/decorators/csrf.py", line 54, in wrapped_view
return view_func(*args, **kwargs)
File "~/.virtualenvs/my_django_environment/lib/python3.5/site-packages/django/views/generic/base.py", line 69, in view
return self.dispatch(request, *args, **kwargs)
File "~/.virtualenvs/my_django_environment/lib/python3.5/site-packages/rest_framework/views.py", line 494, in dispatch
response = self.handle_exception(exc)
File "~/.virtualenvs/my_django_environment/lib/python3.5/site-packages/rest_framework/views.py", line 454, in handle_exception
self.raise_uncaught_exception(exc)
File "~/.virtualenvs/my_django_environment/lib/python3.5/site-packages/rest_framework/views.py", line 491, in dispatch
response = handler(request, *args, **kwargs)
File "~/.virtualenvs/my_django_environment/lib/python3.5/site-packages/rest_framework/decorators.py", line 53, in handler
return func(*args, **kwargs)
File "~/Projects/Places/city_Place/views.py", line 38, in home
return Response({'place_list': PlaceSerializer(place_list,many=True).data}, {'place_order': PlaceSerializer(place_order,many=True).data}, {'disliked_list': PlaceSerializer(disliked_list,many=True).data}, {'preferred_list': PlaceSerializer(preferred_list,many=True).data},)
File "~/.virtualenvs/my_django_environment/lib/python3.5/site-packages/rest_framework/response.py", line 32, in __init__
super(Response, self).__init__(None, status=status)
File "~/.virtualenvs/my_django_environment/lib/python3.5/site-packages/django/template/response.py", line 36, in __init__
super().__init__('', content_type, status, charset=charset)
File "~/.virtualenvs/my_django_environment/lib/python3.5/site-packages/django/http/response.py", line 283, in __init__
super().__init__(*args, **kwargs)
File "~/.virtualenvs/my_django_environment/lib/python3.5/site-packages/django/http/response.py", line 51, in __init__
raise TypeError('HTTP status code must be an integer.')
TypeError: HTTP status code must be an integer.
[19/Apr/2018 04:05:36] "GET /api/ HTTP/1.1" 500 168031

Answer 1

home()中的此行导致异常，

return Response({'place_list': place_list,
                 'preferred_list': preferred_list,
                 'disliked_list': disliked_list,
                 'place_order': place_order, })

在这个语句中，将Place实例/queryset传递给响应，而响应不是JSON Serializable。所以你要做的是，在返回之前序列化queryset。

示例，
将上述语句替换为以下内容：

^{pr2}$