主键字段上的serialize = False是什么意思? [英] What means the serialize=False on Primary-key field?

问题描述

我在Django文档和源代码中没有找到主键字段上 serialize = False 的原因.设置它是否有特殊原因?

I didn't found in the Django docs and Source Code the reason for serialize=False on primary key fields. Is there a special reason to set it?

谢谢

推荐答案

Azd325，

听起来很简单，该字段不会成为序列化对象的一部分.

it is as simple as it sounds, this field will not be part of the serialized object..

尽管，我想您的问题与正在迁移的模型有关，并且模型的生成ID带有serialize = False，对吗?例如在此处中.确实是一个文档，因为创建内在ID是Django的引擎技巧，因为您决定不为对象声明显式ID.

Although, I guess your question concerns to models that are being migrated and have a generated ID with serialize=False, right? such as in here.. There isn't really a documentation on this because it is Django's engine trick to create an intrinsic ID since you decided not to declare an explicit ID for your object..

我刚刚做了一些测试

创建一个没有明确ID的模型

Create a model without an explicit ID

class Model1Test(models.Model):
    justafield = models.CharField(max_length=1000)

迁移结果

class Migration(migrations.Migration):

    dependencies = [
    ]

    operations = [
        migrations.CreateModel(
            name='Model1Test',
            fields=[
                ('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
                ('justafield', models.CharField(max_length=1000)),
            ],
        ),
    ]

数据库级脚本

CREATE TABLE public.module1_model1test
(
  id integer NOT NULL DEFAULT nextval('module1_model1test_id_seq'::regclass),
  justafield character varying(1000) NOT NULL,
  CONSTRAINT module1_model1test_pkey PRIMARY KEY (id)
)

从 Quassnoi :

1. 您需要您的表可以与某些东西连接
2. 如果要对表进行集群，则需要某种主键
3. 如果您的表设计不需要主键，请重新考虑您的设计:很可能您丢失了某些东西.为什么要保留相同的记录?

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