Invoicing: Configurable service date

src/pretix/base/migrations/0289_invoiceline_period.py

@@ -0,0 +1,78 @@
+# Generated by Django 4.2.17 on 2025-09-08 08:14
+from django.core.cache import cache
+from django.db import migrations
+
+
+def set_invoice_period(apps, schema_editor):
+    EventSettingsStore = apps.get_model("pretixbase", "Event_SettingsStore")
+    ev_seen = set()
+    insert_queue = []
+    flush_queue = []
+
+    def store():
+        EventSettingsStore.objects.bulk_create(
+            insert_queue,
+            update_conflicts=True,
+            update_fields=["value"],
+            unique_fields=["object", "key"],
+        )
+        cache.delete_many(flush_queue)
+        flush_queue.clear()
+        insert_queue.clear()
+
+    # Existing events that use pretix-zugferd and have explicitly disabled delivery dates
+    for setting in EventSettingsStore.objects.filter(key="zugferd_include_delivery_date", value="False"):
+        flush_queue.append("hierarkey_{}_{}".format("event", setting.object_id))
+        insert_queue.append(
+            EventSettingsStore(
+                object_id=setting.object_id,
+                key="invoice_period",
+                value="invoice_date",
+            )
+        )
+        ev_seen.add(setting.object_id)
+
+        if len(insert_queue) > 1000:
+            store()
+
+    # Existing events that previously hid their date on invoices
+    for setting in EventSettingsStore.objects.filter(key="show_dates_on_frontpage", value="False"):
+        if setting.object_id in ev_seen:
+            continue
+
+        flush_queue.append("hierarkey_{}_{}".format("event", setting.object_id))
+        insert_queue.append(
+            EventSettingsStore(
+                object_id=setting.object_id,
+                key="invoice_period",
+                value="auto_no_event",
+            )
+        )
+
+        if len(insert_queue) > 1000:
+            store()
+
+    store()
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("pretixbase", "0288_invoice_transmission"),
+    ]
+
+    operations = [
+        migrations.RenameField(
+            model_name="invoiceline",
+            old_name="event_date_to",
+            new_name="period_end",
+        ),
+        migrations.RenameField(
+            model_name="invoiceline",
+            old_name="event_date_from",
+            new_name="period_start",
+        ),
+        migrations.RunPython(
+            set_invoice_period,
+            migrations.RunPython.noop,
+        )
+    ]