Set role "padawan" to all users

apps/rp/migrations/0018_add_groups_to_users.py

+from django.db import migrations
+from django.contrib.auth.models import Group, User
+
+def add_groups(apps, schema_editor):
+    users = User.objects.all()
+    padawanGroup = Group.objects.get(name='Padawan')
+
+    for user in users:
+        user.groups.add(padawanGroup)
+        user.save()
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('rp', '0017_groups'),
+    ]
+
+    operations = [
+        migrations.RunPython(add_groups),
+    ]