mamweb/split-apps-meta/create-ct-hack.py

# Správná migrace vypadá takto:
# Generated by Django 3.2.23 on 2023-12-11 19:19

def nastav_nove_contenttypes(apps, schema_editor):
    ContentType = apps.get_model('contenttypes', 'ContentType')
    old_ct = ContentType.objects.filter(app_label='seminar', model='nastaveni')
    # Pozn: tohle může být prázdné (pokud Django nedostalo signál o dokončených migracích, např. při vyrábění databáze z nuly)
    # Ale .update to nevadí…
    old_ct.update(app_label='various')

def nastav_stare_contenttypes(apps, schema_editor):
    ContentType = apps.get_model('contenttypes', 'ContentType')
    new_ct = ContentType.objects.filter(app_label='various', model='nastaveni')
    new_ct.update(app_label='seminar')

class Migration(migrations.Migration):

    initial = True

    dependencies = [
        ('seminar', '0115_alter_nastaveni_options'),
    ]

    operations = [
        migrations.CreateModel(
            name='Nastaveni',
            fields=[
                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                ('cena_sous', models.IntegerField(default=1000, verbose_name='Účastnický poplatek za soustředění')),
            ],
            options={
                'verbose_name': 'Nastavení semináře',
                'db_table': 'seminar_nastaveni',
                'managed': False,
            },
        ),
        migrations.RunPython(nastav_nove_contenttypes, nastav_stare_contenttypes),
    ]



#Hack: zkrácení
def nastav_nove_contenttypes(apps, schema_editor):
    ContentType = apps.get_model('contenttypes', 'ContentType')
    for m in ('resitel', 'organizator', 'osoba', 'skola', 'prijemce'):
        ContentType.objects.filter(app_label='seminar', model=m).update(app_label='personalni')

def nastav_stare_contenttypes(apps, schema_editor):
    ContentType = apps.get_model('contenttypes', 'ContentType')
    for m in ('resitel', 'organizator', 'osoba', 'skola', 'prijemce'):
        ContentType.objects.filter(app_label='personalni', model=m).update(app_label='seminar')