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API: Fix crash when passing an empty seat_category_mapping during event creation

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Raphael Michel
2020-01-23 14:27:43 +01:00
parent 934217ee4f
commit 0a9daf0d3a
2 changed files with 6 additions and 2 deletions
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7
src/pretix/api/serializers/event.py
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@@ -138,8 +138,11 @@ class EventSerializer(I18nAwareModelSerializer):
return value
def validate_seat_category_mapping(self, value):
if value and value['seat_category_mapping'] and (not self.instance or not self.instance.pk):
raise ValidationError('You cannot specify seat category mappings on event creation.')
if not self.instance or not self.instance.pk:
if value and value['seat_category_mapping']:
raise ValidationError('You cannot specify seat category mappings on event creation.')
else:
return {'seat_category_mapping': {}}
item_cache = {i.pk: i for i in self.instance.items.all()}
result = {}
for k, item in value['seat_category_mapping'].items():