django - 带有mongodb的Django rest-framework不创建自动字段主键ID

Question

我正在使用 Django rest 框架在 MongoDB 中保存记录。迁移如下 -

# Generated by Django 3.0.5 on 2021-01-17 10:39

from django.db import migrations, models


class Migration(migrations.Migration):

    initial = True

    dependencies = [
    ]

    operations = [
        migrations.CreateModel(
            name='Demo',
            fields=[
                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                ('description', models.CharField(default='', max_length=1000)),
                ('user_id', models.IntegerField()),
                ('published', models.BooleanField(default=False)),
            ],
        ),
    ]

但是 MongoDB 中的记录没有自动创建的 id

{
    "_id" : ObjectId("6004354240e7097e5b392e5c"),
    "description" : "sdf asdaaaaaaaaaaaaaaaaaaaaaaaaaaa ass d",
    "user_id" : 11,
    "published" : false
}

使用插入记录serializer.save()

添加记录的功能如下

def demo_add(request):
user_id=request.user.id
tutorial_data = JSONParser().parse(request)
demo_serializer = DemoSerializer(data=tutorial_data)

if demo_serializer.is_valid():
    demo_serializer.save({"user_id":user_id ,"description":tutorial_data['description']})
    return JsonResponse({"result": True})
return JsonResponse({"result":False,"msg":"Invalid validation"}, status=status.HTTP_400_BAD_REQUEST)

Answer 1

如您所见，Django 已经在后台为您处理好了，所以您不必这样做：

auto_created=True，primary_key=True，serialize=False，verbose_name='ID')

{
    "_id" : ObjectId("6004354240e7097e5b392e5c"),
    "description" : "sdf asdaaaaaaaaaaaaaaaaaaaaaaaaaaa ass d",
    "user_id" : 11,
    "published" : false
}

第一行是你的ID，每次创建一个对象，ID都会不同。

虽然没有更多的代码很难更具体