1,写detail 表单提交

{
  { question.question_text }}
{% if error_message %}
{
  { error_message }}
{% endif %}
    
     {% csrf_token %}{% for choice in question.choice_set.all %}    
         
     {
  { choice.choice_text }}
     
{% endfor %}
     
    

改detail.html

{
  { question.question_text }}
    
     {% for choice in question.choice_set.all %}    
     
{
  { choice.choice_text }} -- {
  { choice.votes }} vote{
  { choice.votes|pluralize }}
{% endfor %}
    
Vote again?

使用通用视图

from django.urls import pathfrom . import viewsapp_name = 'polls'urlpatterns = [    path('', views.IndexView.as_view(), name='index'),    path('
    
     /', views.DetailView.as_view(), name='detail'),    path('
     
      /results/', views.ResultsView.as_view(), name='results'),    path('
      
       /vote/', views.vote, name='vote'),]
      
     
    

polls/views.py

from django.shortcuts import get_object_or_404, renderfrom django.http import HttpResponseRedirectfrom django.urls import reversefrom django.views import genericfrom .models import Choice, Questionclass 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]class DetailView(generic.DetailView):    model = Question    template_name = 'polls/detail.html'class ResultsView(generic.DetailView):    model = Question    template_name = 'polls/results.html'def vote(request, question_id):    ... # same as above, no changes needed.

有分两种视图

  and . 

文档有问题：

当没有使用通用视图的是，在模板中使用url 的时候不需要带app的名称，使用视图之后，都需要带上名称。这样一来 也没有省多少代码，不过多app使用模板url 的时候应该是会清晰一些