Re: Generic Views in Django Tutorial Not Working

class IndexView(generic.ListView):      template_name = 'polls/index.html'      context_object_name = 'latest_question_list'        def get_queryset(self):          """Return the last five published questions."""          return Question.objects.order_by('-pub_date')[:5]

the def get_queryset(self): function is missing. check the indendation as well. always produce the code snippet.

On Friday, November 1, 2019 at 5:19:29 PM UTC+5:30, Mike Starr wrote:

Hi! There's a lot of error message to copy and paste so please request what you would like to see specifically. I am at https://docs.djangoproject.com/en/2.2/intro/tutorial04/#use-generic-views-less-code-is-better in the Django tutorial and it seems replacing HTTPRequests with GenericViews broke the web server. I followed the instructions and now have this:

ImproperlyConfigured at /polls/

IndexView is missing a QuerySet. Define IndexView.model, IndexView.queryset, or override IndexView.get_queryset().

Request Method:	GET
Request URL:	http://localhost:8000/polls/
Django Version:	2.2.4
Exception Type:	ImproperlyConfigured
Exception Value:	IndexView is missing a QuerySet. Define IndexView.model, IndexView.queryset, or override IndexView.get_queryset().
Exception Location:	E:\computer stuff\python\lib\site-packages\django\views\generic\list.py in get_queryset, line 39
Python Executable:	E:\computer stuff\python\python.exe
Python Version:	3.7.3
Python Path:	['E:\\computer stuff\\python\\Django\\mysite', 'E:\\computer stuff\\python', 'E:\\computer stuff\\python\\Lib', 'E:\\computer stuff\\python\\Django\\mysite', 'E:\\computer stuff\\python\\python37.zip', 'E:\\computer stuff\\python\\DLLs', 'E:\\computer stuff\\python\\lib\\site-packages', 'E:\\computer stuff\\python\\lib\\site-packages\\scrapy-1.5.0-py3.7.egg', 'E:\\computer ' 'stuff\\python\\lib\\site-packages\\service_identity-18.1.0-py3.7.egg', 'E:\\computer stuff\\python\\lib\\site-packages\\pydispatcher-2.0.5-py3.7.egg', 'E:\\computer stuff\\python\\lib\\site-packages\\parsel-1.5.1-py3.7.egg', 'E:\\computer stuff\\python\\lib\\site-packages\\six-1.12.0-py3.7.egg', 'E:\\computer stuff\\python\\lib\\site-packages\\cssselect-1.0.3-py3.7.egg', 'E:\\computer stuff\\python\\lib\\site-packages\\pyopenssl-19.0.0-py3.7.egg', 'E:\\computer ' 'stuff\\python\\lib\\site-packages\\lxml-4.3.4-py3.7-win-amd64.egg', 'E:\\computer stuff\\python\\lib\\site-packages\\queuelib-1.5.0-py3.7.egg', 'E:\\computer stuff\\python\\lib\\site-packages\\w3lib-1.20.0-py3.7.egg', 'E:\\computer ' 'stuff\\python\\lib\\site-packages\\pyasn1_modules-0.2.5-py3.7.egg', 'E:\\computer stuff\\python\\lib\\site-packages\\win32', 'E:\\computer stuff\\python\\lib\\site-packages\\win32\\lib', 'E:\\computer stuff\\python\\lib\\site-packages\\Pythonwin']
Server time:	Fri, 1 Nov 2019 01:03:42 -0700

Traceback Switch to copy-and-paste view

• E:\computer stuff\python\lib\site-packages\django\core\handlers\exception.py in inner

  34.             response = get_response(request)

      …
  ▶ Local vars
• E:\computer stuff\python\lib\site-packages\django\core\handlers\base.py in _get_response

  115.                 response = self.process_exception_by_middleware(e, request)

       …
  ▶ Local vars
• E:\computer stuff\python\lib\site-packages\django\core\handlers\base.py in _get_response

  113.                 response = wrapped_callback(request, *callback_args, **callback_kwargs)

       …
  ▶ Local vars
• E:\computer stuff\python\lib\site-packages\django\views\generic\base.py in view

  71.             return self.dispatch(request, *args, **kwargs)

      …
  ▶ Local vars
• E:\computer stuff\python\lib\site-packages\django\views\generic\base.py in dispatch

  97.         return handler(request, *args, **kwargs)

      …
  ▶ Local vars
• E:\computer stuff\python\lib\site-packages\django\views\generic\list.py in get

  142.         self.object_list = self.get_queryset()

       …
  ▶ Local vars
• E:\computer stuff\python\lib\site-packages\django\views\generic\list.py in get_queryset

  39.                     'cls': self.__class__.__name__

      …
  ▶ Local vars

Request information

USER

admin

GET

No GET data

POST

No POST data

for http://localhost:8000/polls/

but polls.1 works:

What's new?

 Not much
 Nothing
 I don't know
 The best






but voting yields

ValueError at /polls/1/vote/

The view polls.views.vote didn't return an HttpResponse object. It returned None instead.

Request Method:	POST
Request URL:	http://localhost:8000/polls/1/vote/
Django Version:	2.2.4
Exception Type:	ValueError
Exception Value:	The view polls.views.vote didn't return an HttpResponse object. It returned None instead.
Exception Location:	E:\computer stuff\python\lib\site-packages\django\core\handlers\base.py in _get_response, line 126
Python Executable:	E:\computer stuff\python\python.exe
Python Version:	3.7.3
Python Path:	['E:\\computer stuff\\python\\Django\\mysite', 'E:\\computer stuff\\python', 'E:\\computer stuff\\python\\Lib', 'E:\\computer stuff\\python\\Django\\mysite', 'E:\\computer stuff\\python\\python37.zip', 'E:\\computer stuff\\python\\DLLs', 'E:\\computer stuff\\python\\lib\\site-packages', 'E:\\computer stuff\\python\\lib\\site-packages\\scrapy-1.5.0-py3.7.egg', 'E:\\computer ' 'stuff\\python\\lib\\site-packages\\service_identity-18.1.0-py3.7.egg', 'E:\\computer stuff\\python\\lib\\site-packages\\pydispatcher-2.0.5-py3.7.egg', 'E:\\computer stuff\\python\\lib\\site-packages\\parsel-1.5.1-py3.7.egg', 'E:\\computer stuff\\python\\lib\\site-packages\\six-1.12.0-py3.7.egg', 'E:\\computer stuff\\python\\lib\\site-packages\\cssselect-1.0.3-py3.7.egg', 'E:\\computer stuff\\python\\lib\\site-packages\\pyopenssl-19.0.0-py3.7.egg', 'E:\\computer ' 'stuff\\python\\lib\\site-packages\\lxml-4.3.4-py3.7-win-amd64.egg', 'E:\\computer stuff\\python\\lib\\site-packages\\queuelib-1.5.0-py3.7.egg', 'E:\\computer stuff\\python\\lib\\site-packages\\w3lib-1.20.0-py3.7.egg', 'E:\\computer ' 'stuff\\python\\lib\\site-packages\\pyasn1_modules-0.2.5-py3.7.egg', 'E:\\computer stuff\\python\\lib\\site-packages\\win32', 'E:\\computer stuff\\python\\lib\\site-packages\\win32\\lib', 'E:\\computer stuff\\python\\lib\\site-packages\\Pythonwin']
Server time:	Fri, 1 Nov 2019 01:11:31 -0700

Traceback Switch to copy-and-paste view

• E:\computer stuff\python\lib\site-packages\django\core\handlers\exception.py in inner

  34.             response = get_response(request)

      …
  ▶ Local vars
• E:\computer stuff\python\lib\site-packages\django\core\handlers\base.py in _get_response

  126.                 "returned None instead." % (callback.__module__, view_name)

       …
  ▶ Local vars

Request information

USER

admin

GET

No GET data

POST

Variable	Value
csrfmiddlewaretoken	'pLPWGJ7M3I1Idu1wuWYN1sTwdE9cESkJnCgd1jIY1qHc5ebY4sg6hSdNnyFeWOE6'
choice	'2'

Okay. So. I'm going to study this tutorial and code and see if I can solve the problem myself. If anyone has any suggestions I'll be checking back daily, so ti's much appreciated in advance.

Thank you!

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