删除函数（django fbv）出错

我使用以下函数运行了删除操作

删除成功，但发生错误

def todo_delete (request, pk):
    # template = 'todo / todo_confirm_delete.html'
    todo = get_object_or_404 (Todo, pk = pk)
    todo.delete ()
    Profile.objects.filter (Q (user = request.user.id)). Update (uncompletecount = F ('uncompletecount') - 1)
    print ("todo", todo, delete ')

    return reverse_lazy ('todo: todo_list')

错误

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错误

(venv) (base) C:\django_inflearn2>python manage.py runserver
Watching for file changes with StatReloader
Performing system checks...

System check identified no issues (0 silenced).
May 30, 2019 - 14:28:12
Django version 2.2, using settings 'reservation_app.settings'
Starting development server at http://127.0.0.1:8000/
Quit the server with CTRL-BREAK.
[30/May/2019 14:28:12] "GET /todo/ HTTP/1.1" 200 15022
[30/May/2019 14:28:12] "GET /summernote/editor/id_text/ HTTP/1.1" 200 6349
[30/May/2019 14:28:12] "GET /static/summernote/lang/summernote-en-US.min.js?_=1559194092912 HTTP/1.1" 200 27

Traceback (most recent call last):
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\exception.py", line 34, in inner
    response = get_response(request)
  File "C:\django_inflearn2\venv\lib\site-packages\django\utils\deprecation.py", line 96, in __call__
    response = self.process_response(request, response)
  File "C:\django_inflearn2\venv\lib\site-packages\django\middleware\clickjacking.py", line 26, in process_response
    if response.get('X-Frame-Options') is not None:
AttributeError: '__proxy__' object has no attribute 'get'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\exception.py", line 34, in inner
    response = get_response(request)
  File "C:\django_inflearn2\venv\lib\site-packages\django\utils\deprecation.py", line 94, in __call__
    response = response or self.get_response(request)
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\exception.py", line 36, in inner
    response = response_for_exception(request, exc)
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\exception.py", line 90, in response_for_exception
    response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\exception.py", line 125, in handle_uncaught_exception
    return debug.technical_500_response(request, *exc_info)
  File "C:\django_inflearn2\venv\lib\site-packages\django\views\debug.py", line 94, in technical_500_response
    html = reporter.get_traceback_html()
  File "C:\django_inflearn2\venv\lib\site-packages\django\views\debug.py", line 332, in get_traceback_html
    t = DEBUG_ENGINE.from_string(fh.read())
UnicodeDecodeError: 'cp949' codec can't decode byte 0xe2 in position 9735: illegal multibyte sequence

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\exception.py", line 34, in inner
    response = get_response(request)
  File "C:\django_inflearn2\venv\lib\site-packages\django\utils\deprecation.py", line 94, in __call__
    response = response or self.get_response(request)
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\exception.py", line 36, in inner
    response = response_for_exception(request, exc)
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\exception.py", line 90, in response_for_exception
    response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\exception.py", line 125, in handle_uncaught_exception
    return debug.technical_500_response(request, *exc_info)
  File "C:\django_inflearn2\venv\lib\site-packages\django\views\debug.py", line 94, in technical_500_response
    html = reporter.get_traceback_html()
  File "C:\django_inflearn2\venv\lib\site-packages\django\views\debug.py", line 332, in get_traceback_html
    t = DEBUG_ENGINE.from_string(fh.read())
UnicodeDecodeError: 'cp949' codec can't decode byte 0xe2 in position 9735: illegal multibyte sequence

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\exception.py", line 34, in inner
    response = get_response(request)
  File "C:\django_inflearn2\venv\lib\site-packages\django\utils\deprecation.py", line 94, in __call__
    response = response or self.get_response(request)
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\exception.py", line 36, in inner
    response = response_for_exception(request, exc)
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\exception.py", line 90, in response_for_exception
    response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\exception.py", line 125, in handle_uncaught_exception
    return debug.technical_500_response(request, *exc_info)
  File "C:\django_inflearn2\venv\lib\site-packages\django\views\debug.py", line 94, in technical_500_response
    html = reporter.get_traceback_html()
  File "C:\django_inflearn2\venv\lib\site-packages\django\views\debug.py", line 332, in get_traceback_html
    t = DEBUG_ENGINE.from_string(fh.read())
UnicodeDecodeError: 'cp949' codec can't decode byte 0xe2 in position 9735: illegal multibyte sequence

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\exception.py", line 34, in inner
    response = get_response(request)
  File "C:\django_inflearn2\venv\lib\site-packages\django\utils\deprecation.py", line 94, in __call__
    response = response or self.get_response(request)
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\exception.py", line 36, in inner
    response = response_for_exception(request, exc)
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\exception.py", line 90, in response_for_exception
    response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\exception.py", line 125, in handle_uncaught_exception
    return debug.technical_500_response(request, *exc_info)
  File "C:\django_inflearn2\venv\lib\site-packages\django\views\debug.py", line 94, in technical_500_response
    html = reporter.get_traceback_html()
  File "C:\django_inflearn2\venv\lib\site-packages\django\views\debug.py", line 332, in get_traceback_html
    t = DEBUG_ENGINE.from_string(fh.read())
UnicodeDecodeError: 'cp949' codec can't decode byte 0xe2 in position 9735: illegal multibyte sequence

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\exception.py", line 34, in inner
    response = get_response(request)
  File "C:\django_inflearn2\venv\lib\site-packages\django\utils\deprecation.py", line 94, in __call__
    response = response or self.get_response(request)
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\exception.py", line 36, in inner
    response = response_for_exception(request, exc)
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\exception.py", line 90, in response_for_exception
    response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\exception.py", line 125, in handle_uncaught_exception
    return debug.technical_500_response(request, *exc_info)
  File "C:\django_inflearn2\venv\lib\site-packages\django\views\debug.py", line 94, in technical_500_response
    html = reporter.get_traceback_html()
  File "C:\django_inflearn2\venv\lib\site-packages\django\views\debug.py", line 332, in get_traceback_html
    t = DEBUG_ENGINE.from_string(fh.read())
UnicodeDecodeError: 'cp949' codec can't decode byte 0xe2 in position 9735: illegal multibyte sequence

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\exception.py", line 34, in inner
    response = get_response(request)
  File "C:\django_inflearn2\venv\lib\site-packages\django\utils\deprecation.py", line 94, in __call__
    response = response or self.get_response(request)
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\exception.py", line 36, in inner
    response = response_for_exception(request, exc)
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\exception.py", line 90, in response_for_exception
    response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\exception.py", line 125, in handle_uncaught_exception
    return debug.technical_500_response(request, *exc_info)
  File "C:\django_inflearn2\venv\lib\site-packages\django\views\debug.py", line 94, in technical_500_response
    html = reporter.get_traceback_html()
  File "C:\django_inflearn2\venv\lib\site-packages\django\views\debug.py", line 332, in get_traceback_html
    t = DEBUG_ENGINE.from_string(fh.read())
UnicodeDecodeError: 'cp949' codec can't decode byte 0xe2 in position 9735: illegal multibyte sequence

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\hyunsepk\AppData\Local\Programs\Python\Python36\lib\wsgiref\handlers.py", line 137, in run
    self.result = application(self.environ, self.start_response)
  File "C:\django_inflearn2\venv\lib\site-packages\django\contrib\staticfiles\handlers.py", line 65, in __call__
    return self.application(environ, start_response)
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\wsgi.py", line 141, in __call__
    response = self.get_response(request)
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\base.py", line 75, in get_response
    response = self._middleware_chain(request)
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\exception.py", line 36, in inner
    response = response_for_exception(request, exc)
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\exception.py", line 90, in response_for_exception
    response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
  File "C:\django_inflearn2\venv\lib\site-packages\django\core\handlers\exception.py", line 125, in handle_uncaught_exception
    return debug.technical_500_response(request, *exc_info)
  File "C:\django_inflearn2\venv\lib\site-packages\django\views\debug.py", line 94, in technical_500_response
    html = reporter.get_traceback_html()
  File "C:\django_inflearn2\venv\lib\site-packages\django\views\debug.py", line 332, in get_traceback_html
    t = DEBUG_ENGINE.from_string(fh.read())
UnicodeDecodeError: 'cp949' codec can't decode byte 0xe2 in position 9735: illegal multibyte sequence
[30/May/2019 14:28:17] "GET /todo/60/delete/ HTTP/1.1" 500 59

---

感谢您让我知道错误的原因以及如何修复您的视图

todo_delete

需要html响应，您正在返回

url

我相信

return reverse_lazy ('todo: todo_list')

是重定向到某个

待办事项列表

页面

尝试使用：

---

你有主意了。我还没有测试代码，但我相信您会理解的。

发布完整的StackTraceThaks，因为我包含完整的错误code@HyK我认为问题在于你的

视图

返回的是

url

，而不是

响应

或

重定向

@HyK，对吗？

return reverse_lazy ('todo: todo_list')

return redirect(reverse_lazy ('todo: todo_list'))