Add answers to REST API

doc/api/resources/orders.rst

@@ -76,6 +76,10 @@ checkins                              list of objects            List of check-i
 downloads                             list of objects            List of ticket download options
 ├ output                              string                     Ticket output provider (e.g. ``pdf``, ``passbook``)
 └ url                                 string                     Download URL
+answers                               list of objects            Answers to user-defined questions
+├ question                            integer                    Internal ID of the answered question
+├ answer                              string                     Text representation of the answer
+└ options                             list of integers           Internal IDs of selected option(s)s (only for choice types)
 ===================================== ========================== =======================================================
 
 
@@ -152,6 +156,13 @@ Order endpoints
                     "datetime": "2017-12-25T12:45:23Z"
                   }
                 ],
+                "answers": [
+                  {
+                    "question": 12,
+                    "answer": "Foo",
+                    "options": []
+                  }
+                ],
                 "downloads": [
                   {
                     "output": "pdf",
@@ -248,6 +259,13 @@ Order endpoints
                 "datetime": "2017-12-25T12:45:23Z"
               }
             ],
+            "answers": [
+              {
+                "question": 12,
+                "answer": "Foo",
+                "options": []
+              }
+            ],
             "downloads": [
               {
                 "output": "pdf",
@@ -359,6 +377,13 @@ Order position endpoints
                 "datetime": "2017-12-25T12:45:23Z"
               }
             ],
+            "answers": [
+              {
+                "question": 12,
+                "answer": "Foo",
+                "options": []
+              }
+            ],
             "downloads": [
               {
                 "output": "pdf",
@@ -428,6 +453,13 @@ Order position endpoints
             "datetime": "2017-12-25T12:45:23Z"
           }
         ],
+        "answers": [
+          {
+            "question": 12,
+            "answer": "Foo",
+            "options": []
+          }
+        ],
         "downloads": [
           {
             "output": "pdf",

src/pretix/api/serializers/order.py

@@ -4,6 +4,7 @@ from rest_framework.reverse import reverse
 from pretix.api.serializers.i18n import I18nAwareModelSerializer
 from pretix.base.models import (
     Checkin, Invoice, InvoiceAddress, InvoiceLine, Order, OrderPosition,
+    QuestionAnswer,
 )
 from pretix.base.signals import register_ticket_outputs
 
@@ -14,6 +15,12 @@ class InvoiceAdddressSerializer(I18nAwareModelSerializer):
         fields = ('last_modified', 'company', 'name', 'street', 'zipcode', 'city', 'country', 'vat_id')
 
 
+class AnswerSerializer(I18nAwareModelSerializer):
+    class Meta:
+        model = QuestionAnswer
+        fields = ('question', 'answer', 'options')
+
+
 class CheckinSerializer(I18nAwareModelSerializer):
     class Meta:
         model = Checkin
@@ -72,13 +79,14 @@ class PositionDownloadsField(serializers.Field):
 
 class OrderPositionSerializer(I18nAwareModelSerializer):
     checkins = CheckinSerializer(many=True)
+    answers = AnswerSerializer(many=True)
     downloads = PositionDownloadsField(source='*')
     order = serializers.SlugRelatedField(slug_field='code', read_only=True)
 
     class Meta:
         model = OrderPosition
         fields = ('id', 'order', 'positionid', 'item', 'variation', 'price', 'attendee_name', 'attendee_email',
-                  'voucher', 'tax_rate', 'tax_value', 'secret', 'addon_to', 'checkins', 'downloads')
+                  'voucher', 'tax_rate', 'tax_value', 'secret', 'addon_to', 'checkins', 'downloads', 'answers')
 
 
 class OrderSerializer(I18nAwareModelSerializer):

src/pretix/api/views/order.py

@@ -36,7 +36,7 @@ class OrderViewSet(viewsets.ReadOnlyModelViewSet):
 
     def get_queryset(self):
         return self.request.event.orders.prefetch_related(
-            'positions', 'positions__checkins', 'positions__item',
+            'positions', 'positions__checkins', 'positions__item', 'positions__answers', 'positions__answers__options'
         ).select_related(
             'invoice_address'
         )
@@ -98,7 +98,7 @@ class OrderPositionViewSet(viewsets.ReadOnlyModelViewSet):
 
     def get_queryset(self):
         return OrderPosition.objects.filter(order__event=self.request.event).prefetch_related(
-            'checkins',
+            'checkins', 'answers', 'answers__options'
         ).select_related(
             'item', 'order', 'order__event', 'order__event__organizer'
         )

src/tests/api/test_orders.py

@@ -56,7 +56,8 @@ TEST_ORDERPOSITION_RES = {
     "secret": "z3fsn8jyufm5kpk768q69gkbyr5f4h6w",
     "addon_to": None,
     "checkins": [],
-    "downloads": []
+    "downloads": [],
+    "answers": []
 }
 TEST_ORDER_RES = {
     "code": "FOO",