netbox-community-netbox/netbox/extras/migrations/0069_custom_object_field.py

from django.db import migrations, models
import django.db.models.deletion


class Migration(migrations.Migration):

    dependencies = [
        ('contenttypes', '0002_remove_content_type_name'),
        ('extras', '0068_configcontext_cluster_types'),
    ]

    operations = [
        migrations.AddField(
            model_name='customfield',
            name='object_type',
            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.PROTECT, to='contenttypes.contenttype'),
        ),
    ]