Django 应用开发（3）

1.编写第一个视图

打开polls/view.py

利用一个URLconf将这个视图映射到URL上。

首先先创建一个urls.py文件

编写polls/urls.py

编写mysite/urls.py,让主URLconf可以链接到polls.urls模块。在mysite/urls.py中插入一个include()：

结果：

编写更多的视图

polls/view.py

 1 from django.shortcuts import render
 2 from django.http import HttpResponse
 3
 4 def index(request):
 5     return HttpResponse("Hello,world.You‘re at the polls index.")
 6
 7 def detail(request,question_id):
 8     return HttpResponse("You ‘ re looking at question %s. " % question_id)
 9
10 def results(request,question_id):
11     response = "You‘re looking at the results of question %s."
12     return HttpResponse(response % question_id)
13
14 def vote(request,question_id):
15     return HttpResponse("You‘re voting on question %s." % question_id)
16
17 # Create your views here.

通过下面的url() 调用将这些新的视图和polls.urls模块关联起来：

 1 from django.conf.urls import url
 2
 3 from . import views
 4
 5 urlpatterns = [
 6      # ex: /polls/
 7     url(r‘^$‘, views.index, name=‘index‘),
 8     # ex: /polls/5/
 9     url(r‘^(?P<question_id>[0-9]+)/$‘, views.detail, name=‘detail‘),
10     # ex: /polls/5/results/
11     url(r‘^(?P<question_id>[0-9]+)/results/$‘, views.results, name=‘results‘),
12     # ex: /polls/5/vote/
13     url(r‘^(?P<question_id>[0-9]+)/vote/$‘, views.vote, name=‘vote‘),
14 ]