Question

我一直关注this Django tutorial，我正在尝试删除硬编码的网址，但我无法使反向功能正常工作。

这是我的详细信息：

  CurrentDb.Execute "DELETE * FROM StaffAtMeeting" & _
    "WHERE RoomID =& Me.field1 AND MeetingDate = Me.field2 AND MeetingTime = Me.field3;"

这是urls.py：

def detail(request, question_id):
try:
    question = Question.objects.get(pk=question_id)
except Question.DoesNotExist:
    raise Http404("Question does not exist")

# How it was before:
# return render(request, 'polls/detail.html', {'question': question})

return HttpResponse(reverse('polls:detail', kwargs={'question': question}))

path('<int:question_id>/', views.detail, name='detail')

这是详细视图的模板：

app_name = 'polls'
urlpatterns = [
    # ex: /polls/
    path('', views.index, name='index'),
    # ex: /polls/5/
    path('<int:question_id>/', views.detail, name='detail'),
    # ex: /polls/5/results/
    path('<int:question_id>/results/', views.results, name='results'),
    # ex: /polls/5/vote/
    path('<int:question_id>/vote/', views.vote, name='vote'),
]

有人可以帮我这个或给出任何提示吗？提前谢谢。

Answer 1

我认为您的原始代码很好。如果您在另一个视图（例如，投票视图）中并想要将用户重定向到详细视图，则可以执行以下操作：

return HttpResponseRedirect(reverse('polls:detail', args=(question.id,)))

从教程的第4部分复制：https://docs.djangoproject.com/en/2.0/intro/tutorial04/#write-a-simple-form：

def vote(request, question_id):
    question = get_object_or_404(Question, pk=question_id)
    try:
        selected_choice = question.choice_set.get(pk=request.POST['choice'])
    except (KeyError, Choice.DoesNotExist):
        # Redisplay the question voting form.
        return render(request, 'polls/detail.html', {
            'question': question,
            'error_message': "You didn't select a choice.",
        })
    else:
        selected_choice.votes += 1
        selected_choice.save()
        # Always return an HttpResponseRedirect after successfully dealing
        # with POST data. This prevents data from being posted twice if a
        # user hits the Back button.
        return HttpResponseRedirect(reverse('polls:results', args=(question.id,)))

最后一行将用户从投票视图重定向到结果视图，并使用reverse（）来避免对网址进行硬编码。

如何在视图中使用URL名称？

1 个答案: