Question

我正在尝试将一个User字段添加到模型中，但它不会在迁移文件中生成。

// models.py

from django.db import models
from django.contrib.auth.models import User


class Foo(models.Model):
    """This class represents the Foo model."""
    name = models.CharField(max_length=255, blank=False, unique=True)
    owner = models.OneToOneField(User,
                                 related_name='foos',
                                 on_delete=models.CASCADE),
    date_created = models.DateTimeField(auto_now_add=True)
    date_modified = models.DateTimeField(auto_now=True)

    def __str__(self):
        """Return a human readable representation of the model instance."""
        return "{}".format(self.name)

我运行python3 manage.py makemigrations并获得此输出：

// 0001_initial.py

migrations.CreateModel(
            name='Foo',
            fields=[
                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                ('name', models.CharField(max_length=255, unique=True)),
                ('date_created', models.DateTimeField(auto_now_add=True)),
                ('date_modified', models.DateTimeField(auto_now=True)),
            ],
        ),

任何人都知道该怎么做？是否应该避免使用Django提供的User对象并只创建自己的？

Answer 1

我发现您的模型的第一个问题是comma字段中有OneToOne。删除。
然后，从官方文档中，他们使用settings.AUTH_USER_MODEL作为参考。因此，请尝试以下代码段并执行makemigrations和migrate Db。

from django.db import models
from django.conf import settings


class Foo(models.Model):
    """This class represents the Foo model."""
    name = models.CharField(max_length=255, blank=False, unique=True)
    owner = models.OneToOneField(settings.AUTH_USER_MODEL, related_name='foos', on_delete=models.CASCADE)
    date_created = models.DateTimeField(auto_now_add=True)
    date_modified = models.DateTimeField(auto_now=True)

    def __str__(self):
        """Return a human readable representation of the model instance."""
        return "{}".format(self.name)

希望这有帮助！

迁移没有用户字段

1 个答案: