re2o/users/migrations/0062_auto_20171231_0056.py

# -*- coding: utf-8 -*-
# Generated by Django 1.10.7 on 2017-12-30 23:56
from __future__ import unicode_literals

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


class Migration(migrations.Migration):

    dependencies = [
        ("auth", "0008_alter_user_username_max_length"),
        ("users", "0061_auto_20171230_2033"),
    ]

    def create_groups(apps, schema_editor):
        group = apps.get_model("auth", "Group")
        listrights = apps.get_model("users", "ListRight")
        db_alias = schema_editor.connection.alias
        for gr in listrights.objects.using(db_alias).all():
            grp = group()
            grp.name = gr.unix_name
            grp.save()
            gr.group_ptr = grp
            gr.save()

    def delete_groups(apps, schema_editor):
        group = apps.get_model("auth", "Group")
        db_alias = schema_editor.connection.alias
        group.objects.using(db_alias).all().delete()

    operations = [
        migrations.RenameField(
            model_name="listright", old_name="listright", new_name="unix_name"
        ),
        migrations.AddField(
            model_name="listright",
            name="group_ptr",
            field=models.OneToOneField(
                blank=True,
                null=True,
                auto_created=True,
                on_delete=django.db.models.deletion.CASCADE,
                serialize=False,
                to="auth.Group",
            ),
            preserve_default=False,
        ),
        migrations.RunPython(create_groups, delete_groups),
    ]