在Django迁移中，如何创建一个对象并将其用作另一个字段中的默认对象？

from django.db import models

class MyModel(models.Model):
    name = models.CharField(max_length=100)
    default_object = models.ForeignKey('MyOtherModel', on_delete=models.SET_NULL, null=True)

class MyOtherModel(models.Model):
    # 其他字段

from django.db import migrations

def create_default_object(apps, schema_editor):
    MyOtherModel = apps.get_model('your_app_name', 'MyOtherModel')
    my_object = MyOtherModel.objects.create(name='Default Object')

    MyModel = apps.get_model('your_app_name', 'MyModel')
    MyModel.objects.update(default_object=my_object)

class Migration(migrations.Migration):

    dependencies = [
        ('your_app_name', '0001_initial'),
    ]

    operations = [
        migrations.RunPython(create_default_object),
    ]

python manage.py makemigrations
python manage.py migrate