formatting

src/pretix/api/serializers/order.py

@@ -1282,7 +1282,7 @@ class OrderCreateSerializer(I18nAwareModelSerializer):
             raise ValidationError(
                 'Orders cannot have more than %(max)s positions.' % {'max': settings.PRETIX_MAX_ORDER_SIZE}
             )
-        errs = [{} for p in data]
+        errs = defaultdict(dict)
         if any([p.get('positionid') for p in data]):
             if not all([p.get('positionid') for p in data]):
                 for i, p in enumerate(data):
@@ -1311,16 +1311,16 @@ class OrderCreateSerializer(I18nAwareModelSerializer):
                 last_posid = p['positionid']
 
         elif any([p.get('addon_to') for p in data]):
-            errs = [
-                {'positionid': ["If you set addon_to on any position, you need to specify position IDs manually."]}
-                for p in data
-            ]
+            errs = {
+                i: {'positionid': ["If you set addon_to on any position, you need to specify position IDs manually."]}
+                for i, p in enumerate(data)
+            }
         else:
             for i, p in enumerate(data):
                 p['positionid'] = i + 1
 
-        if any(errs):
-            raise ValidationError(errs)
+        if errs:
+            raise ValidationError(dict(errs))
         return data
 
     def create(self, validated_data):
@@ -1437,7 +1437,7 @@ class OrderCreateSerializer(I18nAwareModelSerializer):
         # use further down
         del quota_diff_for_locking, voucher_diff_for_locking, seat_diff_for_locking
 
-        errs = [{} for p in positions_data]
+        errs = defaultdict(dict)
 
         for i, pos_data in enumerate(positions_data):
             if pos_data.get('voucher'):
@@ -1566,7 +1566,7 @@ class OrderCreateSerializer(I18nAwareModelSerializer):
                                     )
                                 ]
 
-        if any(errs):
+        if errs:
             raise ValidationError({'positions': errs})
 
         if validated_data.get('locale', None) is None:

src/pretix/api/serializers/voucher.py

@@ -19,6 +19,7 @@
 # You should have received a copy of the GNU Affero General Public License along with this program.  If not, see
 # <https://www.gnu.org/licenses/>.
 #
+from collections import defaultdict
 from decimal import Decimal
 
 from rest_framework import serializers
@@ -38,23 +39,20 @@ class VoucherListSerializer(serializers.ListSerializer):
 
         codes = set()
         seats = set()
-        errs = []
-        err = False
-        for voucher_data in validated_data:
+        errs = defaultdict(dict)
+        for i, voucher_data in enumerate(validated_data):
             if voucher_data.get('seat') and (voucher_data.get('seat'), voucher_data.get('subevent')) in seats:
-                err = True
-                errs.append({'code': ['Duplicate seat ID in request.']})
+                errs[i] = {'code': ['Duplicate seat ID in request.']}
                 continue
             else:
                 seats.add((voucher_data.get('seat'), voucher_data.get('subevent')))
 
             if voucher_data['code'] in codes:
-                err = True
-                errs.append({'code': ['Duplicate voucher code in request.']})
+                errs[i] = {'code': ['Duplicate voucher code in request.']}
             else:
                 codes.add(voucher_data['code'])
-                errs.append({})
-        if err:
+
+        if errs:
             raise ValidationError(errs)
         return super().create(validated_data)
 

src/pretix/settings.py

@@ -507,7 +507,6 @@ REST_FRAMEWORK = {
     ],
     'EXCEPTION_HANDLER': 'pretix.api.exception.custom_exception_handler',
     'UNICODE_JSON': False,
-    'LIST_SERIALIZER_ERRORS_AS_DICT': False
 }
 
 

src/setup.cfg

@@ -57,7 +57,6 @@ filterwarnings =
     ignore:teardown:pytest.PytestWarning
     ignore:avoid running initialization queries:RuntimeWarning
     ignore:.*The 'strip_cdata' option of HTMLParser.*:DeprecationWarning:
-    ignore:The list-based error format for `ListSerializer`:rest_framework.deprecation.RemovedInDRF320Warning
 
 
 [coverage:run]

src/tests/api/test_cart.py

@@ -424,7 +424,7 @@ def test_cartpos_create_answer_validation(token_client, organizer, event, item,
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {'answers': [{'question': ['The specified question does not belong to this event.']}]}
+    assert resp.data == {'answers': {0: {'question': ['The specified question does not belong to this event.']}}}
 
     res['answers'][0]['question'] = question.pk
     res['answers'][0]['options'] = [question.options.first().pk]
@@ -434,8 +434,9 @@ def test_cartpos_create_answer_validation(token_client, organizer, event, item,
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {
-        'answers': [{'non_field_errors': ['You should not specify options if the question is not of a choice type.']}]}
+    assert resp.data == {'answers': {
+        0: {'non_field_errors': ['You should not specify options if the question is not of a choice type.']}
+    }}
 
     question.type = Question.TYPE_CHOICE
     question.save()
@@ -447,7 +448,7 @@ def test_cartpos_create_answer_validation(token_client, organizer, event, item,
     )
     assert resp.status_code == 400
     assert resp.data == {
-        'answers': [{'non_field_errors': ['You need to specify options if the question is of a choice type.']}]}
+        'answers': {0: {'non_field_errors': ['You need to specify options if the question is of a choice type.']}}}
 
     with scopes_disabled():
         question.options.create(answer="L")
@@ -461,7 +462,8 @@ def test_cartpos_create_answer_validation(token_client, organizer, event, item,
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {'answers': [{'non_field_errors': ['You can specify at most one option for this question.']}]}
+    assert resp.data == {
+        'answers': {0: {'non_field_errors': ['You can specify at most one option for this question.']}}}
 
     r = token_client.post(
         '/api/v1/upload',
@@ -533,7 +535,7 @@ def test_cartpos_create_answer_validation(token_client, organizer, event, item,
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {'answers': [{'non_field_errors': ['A valid number is required.']}]}
+    assert resp.data == {'answers': {0: {'non_field_errors': ['A valid number is required.']}}}
 
     question.type = Question.TYPE_BOOLEAN
     question.save()
@@ -573,7 +575,8 @@ def test_cartpos_create_answer_validation(token_client, organizer, event, item,
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {'answers': [{'non_field_errors': ['Please specify "true" or "false" for boolean questions.']}]}
+    assert resp.data == {
+        'answers': {0: {'non_field_errors': ['Please specify "true" or "false" for boolean questions.']}}}
 
     question.type = Question.TYPE_DATE
     question.save()
@@ -599,7 +602,7 @@ def test_cartpos_create_answer_validation(token_client, organizer, event, item,
     )
     assert resp.status_code == 400
     assert resp.data == {
-        'answers': [{'non_field_errors': ['Date has wrong format. Use one of these formats instead: YYYY-MM-DD.']}]}
+        'answers': {0: {'non_field_errors': ['Date has wrong format. Use one of these formats instead: YYYY-MM-DD.']}}}
 
     question.type = Question.TYPE_DATETIME
     question.save()
@@ -624,9 +627,9 @@ def test_cartpos_create_answer_validation(token_client, organizer, event, item,
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {'answers': [{'non_field_errors': [
+    assert resp.data == {'answers': {0: {'non_field_errors': [
         'Datetime has wrong format. Use one of these formats instead: '
-        'YYYY-MM-DDThh:mm[:ss[.uuuuuu]][+HH:MM|-HH:MM|Z].']}]}
+        'YYYY-MM-DDThh:mm[:ss[.uuuuuu]][+HH:MM|-HH:MM|Z].']}}}
 
     question.type = Question.TYPE_TIME
     question.save()
@@ -651,8 +654,8 @@ def test_cartpos_create_answer_validation(token_client, organizer, event, item,
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {'answers': [
-        {'non_field_errors': ['Time has wrong format. Use one of these formats instead: hh:mm[:ss[.uuuuuu]].']}]}
+    assert resp.data == {'answers': {0: {'non_field_errors': [
+        'Time has wrong format. Use one of these formats instead: hh:mm[:ss[.uuuuuu]].']}}}
 
 
 @pytest.mark.django_db
@@ -1387,7 +1390,7 @@ def test_cartpos_create_bulk_validation_error_in_addon(token_client, organizer,
                 'data': None,
                 'success': False,
                 'errors': {
-                    'addons': [{'item': ['Invalid pk "-1" - object does not exist.']}]
+                    'addons': {0: {'item': ['Invalid pk "-1" - object does not exist.']}}
                 }
             }
         ]

src/tests/api/test_items.py

@@ -958,9 +958,9 @@ def test_item_create_with_addon(token_client, organizer, event, item, category,
         format='json'
     )
     assert resp.status_code == 400
-    assert resp.content.decode() in [
-        '{"addons":["The minimum count needs to be equal to or greater than zero."]}',
-        '{"addons":[{"min_count":["Ensure this value is greater than or equal to 0."]}]}',
+    assert resp.data in [
+        {"addons": {0: "The minimum count needs to be equal to or greater than zero."}},
+        {"addons": {0: {"min_count": ["Ensure this value is greater than or equal to 0."]}}},
     ]
     with scopes_disabled():
         assert 2 == Item.objects.all().count()

src/tests/api/test_order_create.py

@@ -978,7 +978,7 @@ def test_order_create_position_secret_optional(token_client, organizer, event, i
     )
     assert resp.status_code == 400
 
-    assert resp.data == {'positions': [{'secret': ['You cannot assign a position secret that already exists.']}]}
+    assert resp.data == {'positions': {0: {'secret': ['You cannot assign a position secret that already exists.']}}}
 
 
 @pytest.mark.django_db
@@ -1024,7 +1024,7 @@ def test_order_create_fee_type_validation(token_client, organizer, event, item,
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {'fees': [{'fee_type': ['"unknown" is not a valid choice.']}]}
+    assert resp.data == {'fees': {0: {'fee_type': ['"unknown" is not a valid choice.']}}}
 
 
 @pytest.mark.django_db
@@ -1143,7 +1143,7 @@ def test_order_create_tax_rule_wrong_event(token_client, organizer, event, item,
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {'fees': [{'tax_rule': ['The specified tax rate does not belong to this event.']}]}
+    assert resp.data == {'fees': {0: {'tax_rule': ['The specified tax rate does not belong to this event.']}}}
 
 
 @pytest.mark.django_db
@@ -1158,7 +1158,7 @@ def test_order_create_subevent_not_allowed(token_client, organizer, event, item,
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {'positions': [{'subevent': ['You cannot set a subevent for this event.']}]}
+    assert resp.data == {'positions': {0: {'subevent': ['You cannot set a subevent for this event.']}}}
 
 
 @pytest.mark.django_db
@@ -1185,7 +1185,7 @@ def test_order_create_subevent_validation(token_client, organizer, event, item,
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {'positions': [{'subevent': ['You need to set a subevent.']}]}
+    assert resp.data == {'positions': {0: {'subevent': ['You need to set a subevent.']}}}
 
     res['positions'][0]['subevent'] = subevent2.pk
     resp = token_client.post(
@@ -1194,7 +1194,7 @@ def test_order_create_subevent_validation(token_client, organizer, event, item,
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {'positions': [{'subevent': ['The specified subevent does not belong to this event.']}]}
+    assert resp.data == {'positions': {0: {'subevent': ['The specified subevent does not belong to this event.']}}}
 
 
 @pytest.mark.django_db
@@ -1210,7 +1210,7 @@ def test_order_create_item_validation(token_client, organizer, event, item, item
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {'positions': [{'item': ['The specified item is not active.']}]}
+    assert resp.data == {'positions': {0: {'item': ['The specified item is not active.']}}}
     item.active = True
     item.save()
 
@@ -1222,7 +1222,7 @@ def test_order_create_item_validation(token_client, organizer, event, item, item
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {'positions': [{'item': ['The specified item does not belong to this event.']}]}
+    assert resp.data == {'positions': {0: {'item': ['The specified item does not belong to this event.']}}}
 
     with scopes_disabled():
         var2 = item2.variations.create(value="A")
@@ -1236,7 +1236,7 @@ def test_order_create_item_validation(token_client, organizer, event, item, item
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {'positions': [{'variation': ['You cannot specify a variation for this item.']}]}
+    assert resp.data == {'positions': {0: {'variation': ['You cannot specify a variation for this item.']}}}
 
     with scopes_disabled():
         var1 = item.variations.create(value="A")
@@ -1248,7 +1248,7 @@ def test_order_create_item_validation(token_client, organizer, event, item, item
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {'positions': [{'item': ['The product "Budget Ticket" is not assigned to a quota.']}]}
+    assert resp.data == {'positions': {0: {'item': ['The product "Budget Ticket" is not assigned to a quota.']}}}
 
     with scopes_disabled():
         quota.variations.add(var1)
@@ -1267,7 +1267,7 @@ def test_order_create_item_validation(token_client, organizer, event, item, item
     )
     assert resp.status_code == 400
     assert resp.data == {
-        'positions': [{'variation': ['The specified variation does not belong to the specified item.']}]}
+        'positions': {0: {'variation': ['The specified variation does not belong to the specified item.']}}}
 
     res['positions'][0]['variation'] = None
     resp = token_client.post(
@@ -1276,7 +1276,7 @@ def test_order_create_item_validation(token_client, organizer, event, item, item
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {'positions': [{'variation': ['You should specify a variation for this item.']}]}
+    assert resp.data == {'positions': {0: {'variation': ['You should specify a variation for this item.']}}}
 
 
 @pytest.mark.django_db
@@ -1294,7 +1294,7 @@ def test_order_create_subevent_disabled(token_client, organizer, event, item, su
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {'positions': [{'item': ['The product "Budget Ticket" is not available on this date.']}]}
+    assert resp.data == {'positions': {0: {'item': ['The product "Budget Ticket" is not available on this date.']}}}
 
     s.delete()
     resp = token_client.post(
@@ -1326,7 +1326,7 @@ def test_order_create_subevent_variation_disabled(token_client, organizer, event
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {'positions': [{'item': ['The product "Budget Ticket" is not available on this date.']}]}
+    assert resp.data == {'positions': {0: {'item': ['The product "Budget Ticket" is not available on this date.']}}}
 
     s.delete()
     resp = token_client.post(
@@ -1453,16 +1453,15 @@ def test_order_create_positionid_validation(token_client, organizer, event, item
     )
     assert resp.status_code == 400
     assert resp.data == {
-        'positions': [
-            {},
-            {
+        'positions': {
+            1: {
                 'addon_to': [
                     'If you set addon_to, you need to make sure that the '
                     'referenced position ID exists and is transmitted directly '
                     'before its add-ons.'
                 ]
             }
-        ]
+        }
     }
 
     res['positions'] = [
@@ -1493,10 +1492,14 @@ def test_order_create_positionid_validation(token_client, organizer, event, item
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {'positions': [
-        {'positionid': ["If you set addon_to on any position, you need to specify position IDs manually."]},
-        {'positionid': ["If you set addon_to on any position, you need to specify position IDs manually."]}
-    ]}
+    assert resp.data == {'positions': {
+        0:
+            {'positionid': [
+                "If you set addon_to on any position, you need to specify position IDs manually."]},
+        1:
+            {'positionid': [
+                "If you set addon_to on any position, you need to specify position IDs manually."]}
+    }}
 
     res['positions'] = [
         {
@@ -1526,12 +1529,11 @@ def test_order_create_positionid_validation(token_client, organizer, event, item
     )
     assert resp.status_code == 400
     assert resp.data == {
-        'positions': [
-            {},
-            {
+        'positions': {
+            1: {
                 'positionid': ['If you set position IDs manually, you need to do so for all positions.']
             }
-        ]
+        }
     }
 
     res['positions'] = [
@@ -1563,12 +1565,11 @@ def test_order_create_positionid_validation(token_client, organizer, event, item
     )
     assert resp.status_code == 400
     assert resp.data == {
-        'positions': [
-            {},
-            {
+        'positions': {
+            1: {
                 'positionid': ['Position IDs need to be consecutive.']
             }
-        ]
+        }
     }
 
     res['positions'] = [
@@ -1615,7 +1616,7 @@ def test_order_create_answer_validation(token_client, organizer, event, item, qu
     )
     assert resp.status_code == 400
     assert resp.data == {
-        'positions': [{'answers': [{'question': ['The specified question does not belong to this event.']}]}]}
+        'positions': {0: {'answers': {0: {'question': ['The specified question does not belong to this event.']}}}}}
 
     res['positions'][0]['answers'][0]['question'] = question.pk
     res['positions'][0]['answers'][0]['options'] = [question.options.first().pk]
@@ -1625,8 +1626,8 @@ def test_order_create_answer_validation(token_client, organizer, event, item, qu
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {'positions': [{'answers': [
-        {'non_field_errors': ['You should not specify options if the question is not of a choice type.']}]}]}
+    assert resp.data == {'positions': {0: {'answers': {
+        0: {'non_field_errors': ['You should not specify options if the question is not of a choice type.']}}}}}
 
     question.type = Question.TYPE_CHOICE
     question.save()
@@ -1637,8 +1638,8 @@ def test_order_create_answer_validation(token_client, organizer, event, item, qu
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {'positions': [
-        {'answers': [{'non_field_errors': ['You need to specify options if the question is of a choice type.']}]}]}
+    assert resp.data == {'positions': {0: {
+        'answers': {0: {'non_field_errors': ['You need to specify options if the question is of a choice type.']}}}}}
 
     with scopes_disabled():
         question2.options.create(answer="L")
@@ -1653,7 +1654,8 @@ def test_order_create_answer_validation(token_client, organizer, event, item, qu
     )
     assert resp.status_code == 400
     assert resp.data == {
-        'positions': [{'answers': [{'non_field_errors': ['The specified option does not belong to this question.']}]}]}
+        'positions': {
+            0: {'answers': {0: {'non_field_errors': ['The specified option does not belong to this question.']}}}}}
 
     with scopes_disabled():
         question.options.create(answer="L")
@@ -1669,7 +1671,8 @@ def test_order_create_answer_validation(token_client, organizer, event, item, qu
     )
     assert resp.status_code == 400
     assert resp.data == {
-        'positions': [{'answers': [{'non_field_errors': ['You can specify at most one option for this question.']}]}]}
+        'positions': {
+            0: {'answers': {0: {'non_field_errors': ['You can specify at most one option for this question.']}}}}}
 
     r = token_client.post(
         '/api/v1/upload',
@@ -1745,7 +1748,7 @@ def test_order_create_answer_validation(token_client, organizer, event, item, qu
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {'positions': [{'answers': [{'non_field_errors': ['A valid number is required.']}]}]}
+    assert resp.data == {'positions': {0: {'answers': {0: {'non_field_errors': ['A valid number is required.']}}}}}
 
     question.type = Question.TYPE_BOOLEAN
     question.save()
@@ -1787,8 +1790,8 @@ def test_order_create_answer_validation(token_client, organizer, event, item, qu
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {
-        'positions': [{'answers': [{'non_field_errors': ['Please specify "true" or "false" for boolean questions.']}]}]}
+    assert resp.data == {'positions': {
+        0: {'answers': {0: {'non_field_errors': ['Please specify "true" or "false" for boolean questions.']}}}}}
 
     question.type = Question.TYPE_DATE
     question.save()
@@ -1814,8 +1817,8 @@ def test_order_create_answer_validation(token_client, organizer, event, item, qu
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {'positions': [{'answers': [
-        {'non_field_errors': ['Date has wrong format. Use one of these formats instead: YYYY-MM-DD.']}]}]}
+    assert resp.data == {'positions': {0: {'answers': {
+        0: {'non_field_errors': ['Date has wrong format. Use one of these formats instead: YYYY-MM-DD.']}}}}}
 
     question.type = Question.TYPE_DATETIME
     question.save()
@@ -1841,9 +1844,9 @@ def test_order_create_answer_validation(token_client, organizer, event, item, qu
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {'positions': [{'answers': [{'non_field_errors': [
+    assert resp.data == {'positions': {0: {'answers': {0: {'non_field_errors': [
         'Datetime has wrong format. Use one of these formats instead: '
-        'YYYY-MM-DDThh:mm[:ss[.uuuuuu]][+HH:MM|-HH:MM|Z].']}]}]}
+        'YYYY-MM-DDThh:mm[:ss[.uuuuuu]][+HH:MM|-HH:MM|Z].']}}}}}
 
     question.type = Question.TYPE_TIME
     question.save()
@@ -1869,8 +1872,8 @@ def test_order_create_answer_validation(token_client, organizer, event, item, qu
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {'positions': [{'answers': [
-        {'non_field_errors': ['Time has wrong format. Use one of these formats instead: hh:mm[:ss[.uuuuuu]].']}]}]}
+    assert resp.data == {'positions': {0: {'answers': {
+        0: {'non_field_errors': ['Time has wrong format. Use one of these formats instead: hh:mm[:ss[.uuuuuu]].']}}}}}
 
 
 @pytest.mark.django_db
@@ -1910,10 +1913,10 @@ def test_order_create_quota_validation(token_client, organizer, event, item, quo
     )
     assert resp.status_code == 400
     assert resp.data == {
-        'positions': [
-            {'item': ['There is not enough quota available on quota "Budget Quota" to perform the operation.']},
-            {'item': ['There is not enough quota available on quota "Budget Quota" to perform the operation.']},
-        ]
+        'positions': {
+            0: {'item': ['There is not enough quota available on quota "Budget Quota" to perform the operation.']},
+            1: {'item': ['There is not enough quota available on quota "Budget Quota" to perform the operation.']},
+        }
     }
 
     quota.size = 1
@@ -1924,12 +1927,8 @@ def test_order_create_quota_validation(token_client, organizer, event, item, quo
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {
-        'positions': [
-            {},
-            {'item': ['There is not enough quota available on quota "Budget Quota" to perform the operation.']},
-        ]
-    }
+    assert resp.data == {'positions': {
+        1: {'item': ['There is not enough quota available on quota "Budget Quota" to perform the operation.']}}}
 
     res['force'] = True
     resp = token_client.post(
@@ -1961,11 +1960,8 @@ def test_order_create_quota_consume_cart(token_client, organizer, event, item, q
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {
-        'positions': [
-            {'item': ['There is not enough quota available on quota "Budget Quota" to perform the operation.']},
-        ]
-    }
+    assert resp.data == {'positions': {
+        0: {'item': ['There is not enough quota available on quota "Budget Quota" to perform the operation.']}}}
 
     res['consume_carts'] = [cr.cart_id]
     resp = token_client.post(
@@ -2000,11 +1996,8 @@ def test_order_create_quota_consume_cart_expired(token_client, organizer, event,
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {
-        'positions': [
-            {'item': ['There is not enough quota available on quota "Budget Quota" to perform the operation.']},
-        ]
-    }
+    assert resp.data == {'positions': {
+        0: {'item': ['There is not enough quota available on quota "Budget Quota" to perform the operation.']}}}
 
 
 @pytest.mark.django_db
@@ -2176,11 +2169,7 @@ def test_order_create_with_blocked_seat(token_client, organizer, event, item, qu
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {
-        'positions': [
-            {'seat': ['The selected seat "Seat A1" is not available.']},
-        ]
-    }
+    assert resp.data == {'positions': {0: {'seat': ['The selected seat "Seat A1" is not available.']}}}
 
 
 @pytest.mark.django_db
@@ -2199,11 +2188,7 @@ def test_order_create_with_used_seat(token_client, organizer, event, item, quota
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {
-        'positions': [
-            {'seat': ['The selected seat "Seat A1" is not available.']},
-        ]
-    }
+    assert resp.data == {'positions': {0: {'seat': ['The selected seat "Seat A1" is not available.']}}}
 
 
 @pytest.mark.django_db
@@ -2218,11 +2203,7 @@ def test_order_create_with_unknown_seat(token_client, organizer, event, item, qu
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {
-        'positions': [
-            {'seat': ['The specified seat does not exist.']},
-        ]
-    }
+    assert resp.data == {'positions': {0: {'seat': ['The specified seat does not exist.']}}}
 
 
 @pytest.mark.django_db
@@ -2236,11 +2217,7 @@ def test_order_create_require_seat(token_client, organizer, event, item, quota,
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {
-        'positions': [
-            {'seat': ['The specified product requires to choose a seat.']},
-        ]
-    }
+    assert resp.data == {'positions': {0: {'seat': ['The specified product requires to choose a seat.']}}}
 
 
 @pytest.mark.django_db
@@ -2258,11 +2235,7 @@ def test_order_create_unseated(token_client, organizer, event, item, quota, seat
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {
-        'positions': [
-            {'seat': ['The specified product does not allow to choose a seat.']},
-        ]
-    }
+    assert resp.data == {'positions': {0: {'seat': ['The specified product does not allow to choose a seat.']}}}
 
 
 @pytest.mark.django_db
@@ -2300,12 +2273,7 @@ def test_order_create_with_duplicate_seat(token_client, organizer, event, item,
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {
-        'positions': [
-            {},
-            {'seat': ['The selected seat "Seat A1" is not available.']},
-        ]
-    }
+    assert resp.data == {'positions': {1: {'seat': ['The selected seat "Seat A1" is not available.']}}}
 
 
 @pytest.mark.django_db
@@ -2810,8 +2778,8 @@ def test_order_create_autopricing_voucher_budget_full(token_client, organizer, e
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {'positions': [{}, {'voucher': ['The voucher has a remaining budget of 0.00, therefore a '
-                                                        'discount of 1.50 can not be given.']}]}
+    assert resp.data == {'positions': {1: {'voucher': ['The voucher has a remaining budget of 0.00, therefore a '
+                                                       'discount of 1.50 can not be given.']}}}
 
 
 @pytest.mark.django_db
@@ -2832,8 +2800,8 @@ def test_order_create_voucher_budget_exceeded(token_client, organizer, event, it
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {'positions': [{'voucher': ['The voucher has a remaining budget of 3.00, therefore a '
-                                                    'discount of 4.00 can not be given.']}]}
+    assert resp.data == {'positions': {0: {'voucher': ['The voucher has a remaining budget of 3.00, therefore a '
+                                                       'discount of 4.00 can not be given.']}}}
 
 
 @pytest.mark.django_db
@@ -2876,11 +2844,7 @@ def test_order_create_voucher_unknown_code(token_client, organizer, event, item,
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {
-        'positions': [
-            {'voucher': ['Object with code=FOOBAR does not exist.']},
-        ]
-    }
+    assert resp.data == {'positions': {0: {'voucher': ['Object with code=FOOBAR does not exist.']}}}
 
 
 @pytest.mark.django_db
@@ -2899,9 +2863,7 @@ def test_order_create_voucher_redeemed(token_client, organizer, event, item, quo
     )
     assert resp.status_code == 400
     assert resp.data == {
-        'positions': [
-            {'voucher': ['The voucher has already been used the maximum number of times.']},
-        ]
+        'positions': {0: {'voucher': ['The voucher has already been used the maximum number of times.']}}
     }
 
 
@@ -2924,11 +2886,10 @@ def test_order_create_voucher_redeemed_partially(token_client, organizer, event,
     )
     assert resp.status_code == 400
     assert resp.data == {
-        'positions': [
-            {},
-            {'voucher': ['The voucher has already been used the maximum number of times.']},
-            {'voucher': ['The voucher has already been used the maximum number of times.']},
-        ]
+        'positions': {
+            1: {'voucher': ['The voucher has already been used the maximum number of times.']},
+            2: {'voucher': ['The voucher has already been used the maximum number of times.']},
+        }
     }
 
 
@@ -2949,10 +2910,7 @@ def test_order_create_voucher_item_mismatch(token_client, organizer, event, item
     )
     assert resp.status_code == 400
     assert resp.data == {
-        'positions': [
-            {'voucher': ['This voucher is not valid for this product.']},
-        ]
-    }
+        'positions': {0: {'voucher': ['This voucher is not valid for this product.']}}}
 
 
 @pytest.mark.django_db
@@ -2972,10 +2930,7 @@ def test_order_create_voucher_expired(token_client, organizer, event, item, quot
     )
     assert resp.status_code == 400
     assert resp.data == {
-        'positions': [
-            {'voucher': ['This voucher is expired.']},
-        ]
-    }
+        'positions': {0: {'voucher': ['This voucher is expired.']}}}
 
 
 @pytest.mark.django_db
@@ -3103,10 +3058,8 @@ def test_create_cart_and_consume_cart_with_addons(token_client, organizer, event
     )
     assert resp.status_code == 400
     assert resp.data == {
-        'positions': [
-            {},
-            {'item': ['There is not enough quota available on quota "Addon Quota" to perform the operation.']},
-        ]
+        'positions': {
+            1: {'item': ['There is not enough quota available on quota "Addon Quota" to perform the operation.']}}
     }
 
     res['consume_carts'] = ['aaa@api']
@@ -3214,12 +3167,7 @@ def test_order_create_use_medium_other_organizer(token_client, organizer, event,
         ), format='json', data=res
     )
     assert resp.data == {
-        "positions": [
-            {
-                "use_reusable_medium": ["The specified medium does not belong to this organizer."]
-            }
-        ]
-    }
+        "positions": {0: {"use_reusable_medium": ["The specified medium does not belong to this organizer."]}}}
     assert resp.status_code == 400
 
 
@@ -3361,14 +3309,8 @@ def test_order_create_auto_pricing_explicit_discount_not_allowed(token_client, o
         ), format='json', data=res
     )
     assert resp.status_code == 400
-    assert resp.data == {
-        "positions": [
-            {},
-            {
-                "discount": ["You can only specify a discount if you do the price computation, but price is not set."]
-            }
-        ]
-    }
+    assert resp.data == {"positions": {
+        1: {"discount": ["You can only specify a discount if you do the price computation, but price is not set."]}}}
 
 
 @pytest.mark.django_db

src/tests/api/test_subevents.py

@@ -409,7 +409,7 @@ def test_subevent_create(team, token_client, organizer, event, subevent, meta_pr
         format='json'
     )
     assert resp.status_code == 400
-    assert resp.content.decode() == '{"item_price_overrides":[{"item":["Invalid pk \\"555\\" - object does not exist."]}]}'
+    assert resp.data == {"item_price_overrides": {0: {"item": ["Invalid pk \"555\" - object does not exist."]}}}
 
 
 @pytest.mark.django_db
@@ -580,7 +580,7 @@ def test_subevent_update(token_client, organizer, event, subevent, item, item2,
         format='json'
     )
     assert resp.status_code == 400
-    assert resp.content.decode() == '{"item_price_overrides":[{"item":["Invalid pk \\"123\\" - object does not exist."]}]}'
+    assert resp.data == {"item_price_overrides": {0: {"item": ["Invalid pk \"123\" - object does not exist."]}}}
 
     resp = token_client.patch(
         '/api/v1/organizers/{}/events/{}/subevents/{}/'.format(organizer.slug, event.slug, subevent.pk),
@@ -686,7 +686,8 @@ def test_subevent_update(token_client, organizer, event, subevent, item, item2,
         format='json'
     )
     assert resp.status_code == 400
-    assert resp.content.decode() == '{"variation_price_overrides":[{"variation":["Invalid pk \\"123\\" - object does not exist."]}]}'
+    assert resp.data == {
+        "variation_price_overrides": {0: {"variation": ["Invalid pk \"123\" - object does not exist."]}}}
 
     resp = token_client.patch(
         '/api/v1/organizers/{}/events/{}/subevents/{}/'.format(organizer.slug, event.slug, subevent.pk),

src/tests/api/test_vouchers.py

@@ -1061,7 +1061,7 @@ def test_create_multiple_vouchers_one_invalid(token_client, organizer, event, it
         ], format='json'
     )
     assert resp.status_code == 400
-    assert resp.data == [{}, {'code': ['Ensure this field has at least 5 characters.']}]
+    assert resp.data == {1: {'code': ['Ensure this field has at least 5 characters.']}}
     with scopes_disabled():
         assert Voucher.objects.count() == 0
 
@@ -1106,7 +1106,7 @@ def test_create_multiple_vouchers_duplicate_code(token_client, organizer, event,
         ], format='json'
     )
     assert resp.status_code == 400
-    assert resp.data == [{}, {'code': ['Duplicate voucher code in request.']}]
+    assert resp.data == {1: {'code': ['Duplicate voucher code in request.']}}
     with scopes_disabled():
         assert Voucher.objects.count() == 0
 
@@ -1214,7 +1214,7 @@ def test_create_multiple_vouchers_duplicate_seat(token_client, organizer, event,
         ], format='json'
     )
     assert resp.status_code == 400
-    assert resp.data == [{}, {'code': ['Duplicate seat ID in request.']}]
+    assert resp.data == {1: {'code': ['Duplicate seat ID in request.']}}
     with scopes_disabled():
         assert Voucher.objects.count() == 0
 

src/tests/plugins/ticketoutputpdf/test_api.py

@@ -311,7 +311,7 @@ def test_renderer_batch_invalid(env, token_client, position):
         format='json',
     )
     assert resp.status_code == 400
-    assert resp.data == {"parts": [{"orderposition": ["Invalid pk \"-2\" - object does not exist."]}]}
+    assert resp.data == {"parts": {0: {"orderposition": ["Invalid pk \"-2\" - object does not exist."]}}}
 
     resp = token_client.post(
         '/api/v1/organizers/{}/events/{}/ticketpdfrenderer/render_batch/'.format(env[0].slug, env[0].slug),
@@ -326,7 +326,7 @@ def test_renderer_batch_invalid(env, token_client, position):
         format='json',
     )
     assert resp.status_code == 400
-    assert resp.data == {"parts": [{"override_layout": ["Invalid pk \"-2\" - object does not exist."]}]}
+    assert resp.data == {"parts": {0: {"override_layout": ["Invalid pk \"-2\" - object does not exist."]}}}
 
     resp = token_client.post(
         '/api/v1/organizers/{}/events/{}/ticketpdfrenderer/render_batch/'.format(env[0].slug, env[0].slug),
@@ -341,7 +341,7 @@ def test_renderer_batch_invalid(env, token_client, position):
         format='json',
     )
     assert resp.status_code == 400
-    assert resp.data == {"parts": [{"override_channel": ["Object with identifier=magic does not exist."]}]}
+    assert resp.data == {"parts": {0: {"override_channel": ["Object with identifier=magic does not exist."]}}}
 
     resp = token_client.post(
         '/api/v1/organizers/{}/events/{}/ticketpdfrenderer/render_batch/'.format(env[0].slug, env[0].slug),