Allow for gt and gte selection of change_allow_user_price (#1746)

src/pretix/base/migrations/0161_order_changes_retain_old_default.py

@@ -0,0 +1,20 @@
+from django.db import migrations
+
+
+def migrate_change_allow_user_price(apps, schema_editor):
+    # Previously, the "gt" value was meant to represent "greater or equal", which became an issue the moment
+    # we introduced a "greater" and "greater or equal" option. This migrates any previous "greater or equal"
+    # selection to the new "gte".
+    Event_SettingsStore = apps.get_model('pretixbase', 'Event_SettingsStore')
+    Event_SettingsStore.objects.filter(key="change_allow_user_price", value="gt").update(value="gte")
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('pretixbase', '0160_multiple_confirm_texts'),
+    ]
+
+    operations = [
+        migrations.RunPython(migrate_change_allow_user_price, migrations.RunPython.noop),
+    ]