Create a default questionnaire for new events

src/pretix/base/models/event.py

@@ -737,6 +737,9 @@ class Event(EventMixin, LoggedModel):
         self.settings.mail_send_order_approved_attendee = True
         self.settings.mail_send_order_approved_free_attendee = True
         self.settings.mail_send_download_reminder_attendee = True
+        from . import Questionnaire
+        q = self.questionnaires.create(internal_name=str(_('Attendee data')), type=Questionnaire.QuestionnaireType.ORDER_POSITION_SALE, position=0)
+        q.children.create(label=str(_('Attendee name')), system_datafield='attendee_name_parts', position=0)
 
     @property
     def social_image(self):

src/pretix/control/views/event.py

@@ -1670,6 +1670,7 @@ class QuickSetupView(EventPermissionRequiredMixin, FormView):
                                 user=self.request.user)
 
         subevent = self.request.event.subevents.first()
+        questionnaire = self.request.event.questionnaires.first()
         for i, f in enumerate(self.formset):
             if f in self.formset.deleted_forms or not f.has_changed():
                 continue
@@ -1685,6 +1686,8 @@ class QuickSetupView(EventPermissionRequiredMixin, FormView):
                 position=i,
                 all_sales_channels=True,
             )
+            if questionnaire:
+                item.questionnaires.add(questionnaire)
             item.log_action('pretix.event.item.added', user=self.request.user, data=dict(f.cleaned_data))
             if f.cleaned_data['quota'] or not form.cleaned_data['total_quota']:
                 quota = self.request.event.quotas.create(