add order-level QuestionAnswers

src/pretix/base/migrations/0310_alter_questionanswer_order_level.py

@@ -0,0 +1,28 @@
+# Generated by Django 5.2.15 on 2026-08-07 19:44
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('pretixbase', '0309_questionnaire_questionnairechild'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='questionanswer',
+            name='checkoutsession',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, related_name='answers', to='pretixbase.checkoutsession'),
+        ),
+        migrations.AddField(
+            model_name='questionanswer',
+            name='order',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, related_name='answers', to='pretixbase.order'),
+        ),
+        migrations.AlterUniqueTogether(
+            name='questionanswer',
+            unique_together={('cartposition', 'question'), ('checkoutsession', 'question'), ('order', 'question'), ('orderposition', 'question')},
+        ),
+    ]

src/pretix/base/models/orders.py

@@ -1336,6 +1336,14 @@ class QuestionAnswer(models.Model):
         'CartPosition', null=True, blank=True,
         related_name='answers', on_delete=models.CASCADE
     )
+    order = models.ForeignKey(
+        'Order', null=True, blank=True,
+        related_name='answers', on_delete=models.CASCADE
+    )
+    checkoutsession = models.ForeignKey(
+        'CheckoutSession', null=True, blank=True,
+        related_name='answers', on_delete=models.CASCADE
+    )
     question = models.ForeignKey(
         Question, related_name='answers', on_delete=models.CASCADE
     )
@@ -1351,7 +1359,12 @@ class QuestionAnswer(models.Model):
     objects = ScopedManager(organizer='question__event__organizer')
 
     class Meta:
-        unique_together = [['orderposition', 'question'], ['cartposition', 'question']]
+        unique_together = [
+            ['orderposition', 'question'],
+            ['cartposition', 'question'],
+            ['order', 'question'],
+            ['checkoutsession', 'question'],
+        ]
 
     @property
     def backend_file_url(self):