etesync-server/django_etesync/migrations/0029_auto_20200312_1849.py

# Generated by Django 3.0.3 on 2020-03-12 18:49

from django.db import migrations
from django.utils.crypto import get_random_string


def generate_rev_uid(length=32):
    return get_random_string(length)


def add_collection_main_item(apps, schema_editor):
    Collection = apps.get_model('django_etesync', 'Collection')
    CollectionItem = apps.get_model('django_etesync', 'CollectionItem')
    CollectionItemRevision = apps.get_model('django_etesync', 'CollectionItemRevision')

    for col in Collection.objects.all():
        main_item = CollectionItem.objects.create(uid=None, encryptionKey=None, version=col.version, collection=col)
        col.mainItem = main_item
        col.save()

        CollectionItemRevision.objects.create(
            uid=generate_rev_uid(),
            hmac='hmac-hash',
            item=main_item)


class Migration(migrations.Migration):

    dependencies = [
        ('django_etesync', '0028_auto_20200312_1819'),
    ]

    operations = [
        migrations.RunPython(add_collection_main_item),
    ]