一对一字段抛出错误“此字段必须唯一。”Django rest框架

Question

当我向django服务器发送post请求时，我被这个错误卡住了，它似乎只会返回

   "user": [
       "This field must be unique."
       ]
   }

我做了一点调试，发现它与我使用一对一字段有关，这是我的： models.py

from django.contrib.auth.models import User
class EventPost(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    event_name = models.CharField(max_length=50 )
    event_time = models.CharField(max_length = 50, default = '')
    event_date = models.CharField(max_length = 50, default = '')

    def __str__(self):
        return self.event_time

序列化程序.py

from rest_framework import serializers
from .models import EventPost
from django import forms
from django.contrib.auth.validators import UnicodeUsernameValidator
class EventPostSerializer(serializers.ModelSerializer):
    class Meta:
        model = EventPost
        fields = (
            'user',
            'event_name',
            'event_time',
            'event_date',
        )

还有我的观点

from django.shortcuts import render
from rest_framework.response import Response
from rest_framework.views import APIView
from .models import EventPost
from .serializers import EventPostSerializer
from rest_framework.permissions import IsAuthenticated
# Create your views here.
class PostViews(APIView):

    permission_classes = (IsAuthenticated,)

    def get(self, request, *args, **kwargs):
        data = {
            'GET':'True',
        }
        return Response(data)

    def post(self, request,*args, **kwargs):
        serializer = EventPostSerializer(data=request.data)
        if serializer.is_valid():
            serializer.save()
            return Response(serializer.data)
        else:
            return Response(serializer.errors)

我是django rest框架的新手，请原谅。如果你需要更多的信息，也请告诉我

Answer 1

当模型a的一条记录恰好与模型B的一条记录相关时，应使用一对一字段。如果某个对象以某种方式扩展了另一个对象，则此字段可用作该对象的主键。而是使用多对一关系：

user = models.ForeignKey(User, on_delete=models.CASCADE)