mybuddy/babybuddy/migrations/0002_add_settings.py

# -*- coding: utf-8 -*-
from django.db import migrations


def add_settings(apps, schema_editor):
    Settings = apps.get_model("babybuddy", "Settings")
    User = apps.get_model("auth", "User")
    for user in User.objects.all():
        if Settings.objects.filter(user=user).count() == 0:
            settings = Settings.objects.create(user=user)
            settings.save()


class Migration(migrations.Migration):

    initial = True

    dependencies = [
        ("babybuddy", "0001_initial"),
    ]

    operations = [
        migrations.RunPython(add_settings, reverse_code=migrations.RunPython.noop),
    ]