Další pokus o migraci, I guess (po týdnu, lol)

personalni/migrations/0003_initial.py

@@ -5,6 +5,17 @@ import django.utils.timezone
 import django_countries.fields
 import imagekit.models.fields
 
+def nastav_nove_contenttypes(apps, schema_editor):
+    ContentType = apps.get_model('contenttypes', 'ContentType')
+    for m in ('resitel', 'organizator', 'osoba', 'skola', 'prijemce'):
+        oct = ContentType.objects.filter(app_label='seminar', model=m)
+        oct.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'):
+        nct = ContentType.objects.filter(app_label='personalni', model=m)
+        nct.update(app_label='seminar')
 
 class Migration(migrations.Migration):
 
@@ -16,6 +27,7 @@ class Migration(migrations.Migration):
     ]
 
     operations = [
+        migrations.RunPython(nastav_nove_contenttypes, nastav_stare_contenttypes),
         migrations.CreateModel(
             name='Organizator',
             fields=[

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

@@ -0,0 +1,52 @@
+# 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')
+

split-apps-meta/create.notes

@@ -1,4 +1,5 @@
 Prostě zkopírovat vedle, s původními (=správnými) related names.
 makemigrations
+! Doplnit hack kolem content-types
 doplnit závislost na unmanage
 migrate