티켓 종류가 없을 경우 오류 페이지로 안내

[iz4blue]

잘못된 요청은 간단히 에러 페이지를 만들어 티켓이 없다고 알려주면 더 좋을 것 같습니다.
우선은 에러 메시지 부터 리포팅 합니다.

줄바꿈 처리는 잘못 캡춰를 했네요. 넓은 이해심으로 수동으로 파악 부탁드립니다. +_+a

Internal Server Error: /2018/registration/payment/0/
Traceback (most recent call last):
  File "--python-evn-path--/site-packages/django/core/handlers/exception.py", line 4
1, in inner
    response = get_response(request)
  File "--python-evn-path--/site-packages/django/core/handlers/base.py", line 249, i
n _legacy_get_response
    response = self._get_response(request)
  File "--python-evn-path--/site-packages/django/core/handlers/base.py", line 187, i
n _get_response
    response = self.process_exception_by_middleware(e, request)
  File "--python-evn-path--/site-packages/django/core/handlers/base.py", line 185, i
n _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "--python-evn-path--/site-packages/django/contrib/auth/decorators.py", line 2
3, in _wrapped_view
    return view_func(request, *args, **kwargs)
  File "/home/pyconkr/www.pycon.kr/pyconkr-2018/registration/views.py", line 61, in payment
    product = Option.objects.get(id=option_id)
  File "--python-evn-path--/site-packages/django/db/models/manager.py", line 85, in
manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
  File "--python-evn-path--/site-packages/django/db/models/query.py", line 380, in g
et
    self.model._meta.object_name
registration.models.DoesNotExist: Option matching query does not exist.