feat: Allow location to be null in SearchSubscription

src/fellchensammlung/migrations/0031_alter_searchsubscription_location_and_more.py

@@ -0,0 +1,24 @@
+# Generated by Django 5.1.4 on 2024-12-31 12:42
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('fellchensammlung', '0030_rename_radius_searchsubscription_max_distance'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='searchsubscription',
+            name='location',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.PROTECT, to='fellchensammlung.location'),
+        ),
+        migrations.AlterField(
+            model_name='searchsubscription',
+            name='max_distance',
+            field=models.IntegerField(choices=[(20, '20 km'), (50, '50 km'), (100, '100 km'), (200, '200 km'), (500, '500 km')], null=True),
+        ),
+    ]