使用序列化程序使用 ForeignKey 更新 django 模型数据库

Question

我创建了一个 django model，其中包含用户的外键，如下所示：

from authentication.models import User
from django.db import models

class Event(models.Model):
    
    user = models.ForeignKey(User, on_delete=models.CASCADE, null=True)
    dr_notice_period = models.IntegerField(blank=True, null=True)
    dr_duration = models.IntegerField(blank=True, null=True)
    dr_request = models.FloatField(blank=True, null=True)

我的serializers.py文件如下：

class EventSerializer(serializers.ModelSerializer):

    user = UserSerializer(many=True, read_only=True)

    class Meta:
        model = Event
        fields = ['user', 'dr_notice_period', 'dr_duration', 'dr_request']

我需要做的是转到 url 并通过 POST 请求将数据上传到数据库，但没有具体指定用户。

我的views.py如下：

from rest_framework.response import Response
from rest_framework.decorators import api_view
from rest_framework import status

from vpp_optimization.serializers import EventSerializer

@api_view(['POST'])
def event(request):

    serializer = EventSerializer(data=request.data)

    if serializer.is_valid():
        instance = serializer.save(commit=False)
        instance.user = request.user
        instance.save()
        return Response({"status": "success", "data": serializer.data}, status=status.HTTP_200_OK)
    else:
        return Response({"status": "error", "data": serializer.errors}, status=status.HTTP_400_BAD_REQUEST)

在我研究的过程中，我认为通过在 save 中使用 commit=False 可以解决问题，但我收到以下错误：

'commit' is not a valid keyword argument to the 'save()' method. If you need to access data before committing to the database then inspect 'serializer.validated_data' instead. You can also pass additional keyword arguments to 'save()' if you need to set extra attributes on the saved model instance. For example: 'serializer.save(owner=request.user)'.'

有没有更好的方法来完成我打算做的事情？

Answer 1

您将用户作为参数传递，因此：

if serializer.is_valid():
    instance = serializer.save(<strong>user=request.user</strong>)
        return Response({'status': 'success', 'data': serializer.data}, status=status.HTTP_200_OK)

Note: It is normally better to make use of the settings.AUTH_USER_MODEL ^[Django-doc] to refer to the user model, than to use the User model ^[Django-doc] directly. For more information you can see the referencing the User model section of the documentation.

使用序列化程序使用 ForeignKey 更新 django 模型数据库

Update django model database with ForeignKey by using serializer

django

django-models

python-3.x

django-rest-framework