From f10cd3aba5bb8451bcf8dce4434f32f268d3a206 Mon Sep 17 00:00:00 2001
From: Jonathan Weth <git@jonathanweth.de>
Date: Tue, 6 Aug 2024 17:57:11 +0200
Subject: [PATCH] Create migration checking for old data requiring Lesrooster
to be installed
---
.../migrations/0024_check_new_models.py | 27 +++++++++++++++++++
1 file changed, 27 insertions(+)
create mode 100644 aleksis/apps/alsijil/migrations/0024_check_new_models.py
diff --git a/aleksis/apps/alsijil/migrations/0024_check_new_models.py b/aleksis/apps/alsijil/migrations/0024_check_new_models.py
new file mode 100644
index 000000000..da52a8722
--- /dev/null
+++ b/aleksis/apps/alsijil/migrations/0024_check_new_models.py
@@ -0,0 +1,27 @@
+from django.db import migrations, models
+
+from django.apps import apps as global_apps
+
+def check_for_migration(apps, schema_editor):
+ if global_apps.is_installed('aleksis.apps.lesrooster'):
+ return
+
+ ExcuseType = apps.get_model('alsijil', 'ExcuseType')
+ PersonalNote = apps.get_model('alsijil', 'PersonalNote')
+ LessonDocumentation = apps.get_model('alsijil', 'LessonDocumentation')
+
+ model_types = [ExcuseType, PersonalNote, LessonDocumentation]
+
+ for model in model_types:
+ if model.objects.exists():
+ raise RuntimeError("You have legacy data. Please install AlekSIS-App-Lesrooster to migrate them.")
+
+class Migration(migrations.Migration):
+
+ dependencies = [
+ ('alsijil', '0023_add_tardiness_and_rework_constraints'),
+ ]
+
+ operations = [
+ migrations.RunPython(check_for_migration),
+ ]
--
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