关于python：该字段是在序列化程序中声明的，但是在django rest中没有包含错误

The field was declared on serializer , but has not been included error in django rest

我在DjangoRESTAPI中创建了一些序列化程序，并陷入了奇怪的问题。当我访问http://127.0.0.1:8000/api/register/URL时，我得到错误：

Environment:

Request Method: GET Request URL: http://localhost:8000/api/users/

Django Version: 1.10.2 Python Version: 3.5.2 Installed Applications:
['django.contrib.admin', 'django.contrib.auth',
'django.contrib.contenttypes', 'django.contrib.sessions',
'django.contrib.messages', 'django.contrib.staticfiles',
'rest_framework', 'api'] Installed Middleware:
['django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware']

Traceback:

File
"D:\code\active\Python\Django\photo-hub\photo-hub\env\lib\site-packages\django\core\handlers\exception.py"
in inner
39. response = get_response(request)

File
"D:\code\active\Python\Django\photo-hub\photo-hub\env\lib\site-packages\django\core\handlers\base.py"
in _legacy_get_response
249. response = self._get_response(request)

File
"D:\code\active\Python\Django\photo-hub\photo-hub\env\lib\site-packages\django\core\handlers\base.py"
in _get_response
217. response = self.process_exception_by_middleware(e, request)

File
"D:\code\active\Python\Django\photo-hub\photo-hub\env\lib\site-packages\django\core\handlers\base.py"
in _get_response
215. response = response.render()

File
"D:\code\active\Python\Django\photo-hub\photo-hub\env\lib\site-packages\django\template
esponse.py"
in render
109. self.content = self.rendered_content

File
"D:\code\active\Python\Django\photo-hub\photo-hub\env\lib\site-packages
est_framework
esponse.py"
in rendered_content
72. ret = renderer.render(self.data, accepted_media_type, context)

File
"D:\code\active\Python\Django\photo-hub\photo-hub\env\lib\site-packages
est_framework
enderers.py"
in render
697. context = self.get_context(data, accepted_media_type, renderer_context)

File
"D:\code\active\Python\Django\photo-hub\photo-hub\env\lib\site-packages
est_framework
enderers.py"
in get_context
630. raw_data_post_form = self.get_raw_data_form(data, view, 'POST', request)

File
"D:\code\active\Python\Django\photo-hub\photo-hub\env\lib\site-packages
est_framework
enderers.py"
in get_raw_data_form
553. content = renderer.render(serializer.data, accepted, context)

File
"D:\code\active\Python\Django\photo-hub\photo-hub\env\lib\site-packages
est_framework\serializers.py"
in data
508. ret = super(Serializer, self).data

File
"D:\code\active\Python\Django\photo-hub\photo-hub\env\lib\site-packages
est_framework\serializers.py"
in data
244. self._data = self.get_initial()

File
"D:\code\active\Python\Django\photo-hub\photo-hub\env\lib\site-packages
est_framework\serializers.py"
in get_initial
387. for field in self.fields.values()

File
"D:\code\active\Python\Django\photo-hub\photo-hub\env\lib\site-packages
est_framework\serializers.py"
in fields
340. for key, value in self.get_fields().items():

File
"D:\code\active\Python\Django\photo-hub\photo-hub\env\lib\site-packages
est_framework\serializers.py"
in get_fields
947. field_names = self.get_field_names(declared_fields, info)

File
"D:\code\active\Python\Django\photo-hub\photo-hub\env\lib\site-packages
est_framework\serializers.py"
in get_field_names
1046. serializer_class=self.class.name

Exception Type: AssertionError at /api/users/ Exception Value: The
field 'photos' was declared on serializer UserSerializer, but has not
been included in the 'fields' option.

号

但我的用户序列化程序甚至没有"photos"字段。我是刚来Django的，请帮助我了解这个问题的根源。

序列化程序.py

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from django.utils import timezone
from django.contrib.auth.models import User

from rest_framework import serializers

from api.models import Album, Photo

class PhotoSerializer(serializers.HyperlinkedModelSerializer):
#url = serializers.HyperlinkedIdentityField(view_name="photo-detail")
album = serializers.HyperlinkedRelatedField(view_name='album-detail', queryset=Album.objects)
owner = serializers.HyperlinkedRelatedField(view_name='user-detail', queryset=User.objects)

class Meta:
model = Photo
fields = ('url', 'name', 'image', 'creation_date', 'owner', 'album')
read_only_fields=('creation_date')

class AlbumSerializer(serializers.HyperlinkedModelSerializer):
#url = serializers.HyperlinkedIdentityField(view_name="album-detail")
owner = serializers.HyperlinkedRelatedField(view_name='user-detail', queryset=User.objects)
photos = serializers.HyperlinkedRelatedField(view_name='photo-list', queryset=Photo.objects, many=True)

def get_validation_exclusions(self):
# Need to exclude `author` since we'll add that later based off the request
exclusions = super(AlbumSerializer, self).get_validation_exclusions()
return exclusions + ['user']

class Meta:
model = Album
fields = ('pk', 'name', 'creation_date', 'owner', 'photos')
read_only_fields=('creation_date')

class UserSerializer(serializers.HyperlinkedModelSerializer):
#url = serializers.HyperlinkedIdentityField(view_name="user-detail", read_only=True)
albums = serializers.HyperlinkedRelatedField(many=True, view_name='album-list', queryset=Album.objects)

password = serializers.CharField(write_only=True, required=True)
confirm_password = serializers.CharField(write_only=True, required=True)

class Meta:
model = User
fields = ('url', 'pk', 'username', 'email', 'password', 'is_staff', 'albums')
write_only_fields = ('password')
read_only_fiels = ('pk')

def create(self, validated_data):
user = User.objects.create(
username=validated_data['username'],
email=validated_data['email'],
)
user.set_password(validated_data['password'])
user.save()
return user

def update(self, instance, validated_data):
user = super(UserSerializer, self).update(instance, validated_data)
user.set_password(validated_data['password'])
user.save()
return user

def validate(self, data):
if data['password']:
if data['password'] != data['confirm_password']:
raise serializers.ValidationError(
"The passwords have to be the same"
)
return data

AuthRegister视图

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class AuthRegister(APIView):
serializer_class = UserSerializer
permission_classes = (permissions.AllowAny,)

def post(self, request, format=None):
serializer = self.serializer_class(data=request.data)
if serializer.is_valid():
serializer.save()
return Response(serializer.data, status=status.HTTP_201_CREATED)
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)

号

api/urls.py版

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from django.conf.urls import include, url
from .views import AuthRegister
from rest_framework_jwt.views import obtain_jwt_token, refresh_jwt_token, verify_jwt_token
from rest_framework import routers
from api import views

router = routers.DefaultRouter()
router.register(r'users', views.UserViewSet)
router.register(r'albums', views.AlbumViewSet)
router.register(r'photos', views.PhotoViewSet)

urlpatterns = [
url(r'^', include(router.urls)),
url(r'^login/', obtain_jwt_token),
url(r'^token-refresh/', refresh_jwt_token),
url(r'^token-verify/', verify_jwt_token),
url(r'^register/$', AuthRegister.as_view()),