如何在Django Rest框架中对嵌套的Serailizer执行发布请求

卡姆维尔·坎古拉（Karmvir Khangura）

HII我是新来的Django的REST框架我能够执行把删除和获取操作，但无法执行后操作
的models.py

class User(auth.models.User, auth.models.PermissionsMixin):
def __str__(self):
    return "@{}".format(self.username)
class User_log(models.Model):
    user = models.OneToOneField(auth.models.User,on_delete=models.CASCADE,related_name='user_logs')
    fullname=models.CharField(max_length=255)
    fb_login=models.BooleanField(default=False)
    def __str__(self):
        return self.fullname

serializers.py

class userSerializers(serializers.ModelSerializer):
    password1=serializers.CharField(source="user.password1",write_only=True)
    password2=serializers.CharField(source="user.password2",write_only=True)
    fullname=serializers.CharField(source='user_logs.fullname')
    fb=serializers.BooleanField(source='user_logs.fb_login')
    class Meta:
        model = User
        fields=('id','username','email','password1','password2','fullname','fb')
        related_fields = ['user_logs']
    def update(self, instance, validated_data):
    # Handle related objects
        for related_obj_name in self.Meta.related_fields:
            data = validated_data.pop(related_obj_name)
            related_instance = getattr(instance, related_obj_name)

            # Same as default update implementation
            for attr_name, value in data.items():
                setattr(related_instance, attr_name, value)
            related_instance.save()
        return super(userSerializers,self).update(instance, validated_data)

urls.py

from django.urls import path,include
from django.contrib.auth import views as auth_views
from . import views
from rest_framework import routers
router=routers.DefaultRouter()
router.register('accounts',views.Userview,basename='user')
app_name = 'accounts'

urlpatterns = [
    path('login/', auth_views.LoginView.as_view(template_name="accounts/login.html"),name='login'),
    path('logout/', auth_views.LogoutView.as_view(), name="logout"),
    path('signup/', views.SignUp.as_view(), name="signup"),
    path('password-reset/',
         auth_views.PasswordResetView.as_view(
             template_name='accounts/password_reset_email.html'
         ),
         name='password_reset'),
    path('password-reset/done/',
         auth_views.PasswordResetDoneView.as_view(
             template_name='accounts/password_reset_done.html'
         ),
         name='password_reset_done'),
    path('password-reset-confirm/<uidb64>/<token>/',
         auth_views.PasswordResetConfirmView.as_view(
             template_name='accounts/password_reset_confirm.html'
         ),
         name='password_reset_confirm'),
    path('password-reset-complete/',
         auth_views.PasswordResetCompleteView.as_view(
             template_name='accounts/password_reset_complete.html'
         ),
         name='password_reset_complete'),
    path('',include(router.urls)),
]

views.py

class Userview(viewsets.ModelViewSet):
def get_serializer_class(self):
    return userSerializers
def get_queryset(self):
    return User.objects.all()
def list(self,request):
    queryset = User.objects.all()
    serializer=userSerializers(queryset,many=True)
    if serializer.is_valid:
        return Response(serializer.data)

这是我执行get请求时的json格式

[
{
    "id": 1,
    "username": "karm",
    "email": "[email protected]",
    "fullname": "ss",
    "fb": false
}
]

正如提到的earliew，每当我执行put delete或使其工作但不是post的情况时，我得到的错误是这样的：

AssertionError at /accounts/accounts/

.create()默认情况下，该方法不支持可写的点源字段。.create()为序列化器编写显式方法accounts.serializers.userSerializers，或read_only=True在点源序列化器字段上设置。

麦克风

这里要考虑两点：

DRF序列化器不支持write_only。而是extra_kwargs在序列化器的Meta块中使用。
create在序列化器中编写一个方法。下面是一个粗糙的例子。

请参阅文档，以获取有关DRF序列化器中只写字段的更多信息。

class userSerializers(serializers.ModelSerializer):
    password1=serializers.CharField(source="user.password1")
    password2=serializers.CharField(source="user.password2")
    fullname=serializers.CharField(source='user_logs.fullname')
    fb=serializers.BooleanField(source='user_logs.fb_login')
    class Meta:
        model = User
        fields
        fields=['id','username','email','password1','password2','fullname','fb']
        related_fields = ['user_logs']
        extra_kwargs = {
          'password1': {'write_only': True},
          'password2': {'write_only': True},
        }

    def create(self, validated_data): // adjust to fit your actual User model
        user = User(
            email=validated_data['email'],
            username=validated_data['username']
        )
        user.set_password(validated_data['password'])
        user.save()
        return user

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