创建一个mysite项目
django-admin startproject mysite
创建一个polls应用
django-admin startapp polls
mkdir polls/templates/ 创建模板文件夹
polls.views.py 内容如下
from django.shortcuts import get_object_or_404, render from django.core.urlresolvers import reverse from django.views import generic # Create your views here. 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] 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): p = get_object_or_404(Question, pk=question_id) try: selected_choice = p.choice_set.get(pk=request.POST[‘choice‘]) except (KeyError, Choice.DoesNotExist): # Redisplay the question voting form. return render(request, ‘polls/detail.html‘, {‘question‘: p,‘error_message‘: "You didn‘t select a choice.",}) else: selected_choice.votes += 1 selected_choice.save() return HttpResponseRedirect(reverse(‘polls:results‘, args=(p.id,)))
以上采用的是generic View的方法,还可以用下面的方法
from django.shortcuts import render from django.http import HttpResponse,HttpResponseRedirect from polls.models import Question,Choice from django.template import RequestContext ,loader from django.shortcuts import get_object_or_404, render from django.core.urlresolvers import reverse # Create your views here. def detail(request, question_id): text = Question.objects.filter(pk=question_id) #return HttpResponse("You‘re looking at question %s." % question_id) #return HttpResponse(text) question = get_object_or_404(Question, pk=question_id) return render(request, ‘polls/detail.html‘, {‘question‘: question}) def results(request, question_id): #response = "You‘re looking at the results of question %s." #return HttpResponse(response % question_id) question = get_object_or_404(Question, pk=question_id) return render(request, ‘polls/results.html‘, {‘question‘: question}) def vote(request, question_id): #return HttpResponse("You‘re voting on question %s." % question_id) p = get_object_or_404(Question, pk=question_id) try: selected_choice = p.choice_set.get(pk=request.POST[‘choice‘]) except (KeyError, Choice.DoesNotExist): # Redisplay the question voting form. return render(request, ‘polls/detail.html‘, {‘question‘: p,‘error_message‘: "You didn‘t select a choice.",}) else: selected_choice.votes += 1 selected_choice.save() return HttpResponseRedirect(reverse(‘polls:results‘, args=(p.id,))) def index(request): latest_question_list = Question.objects.order_by(‘-pub_date‘)[:5] context = {‘latest_question_list‘:latest_question_list} return render(request,‘polls/index.html‘,context) 40,1-4 底端
app02/models.py
from django.db import models from django.utils import timezone import datetime from django.contrib.contenttypes.fields import GenericForeignKey # Create your models here. class Question(models.Model): question_text = models.CharField(max_length=200) pub_date = models.DateTimeField(‘date published‘) def __str__(self): return self.question_text def was_published_recently(self): return self.pub_date >= timezone.now() - datetime.timedelta(days=1) #判断是否是最近发布的 was_published_recently.admin_order_field = ‘pub_date‘ #用pub_date字段排序 was_published_recently.boolean = True #如果是最近发布的就会显示一个标志出来 was_published_recently.short_description = ‘Published recently?‘ #描述 class Choice(models.Model): question = models.ForeignKey(Question) choice_text = models.CharField(max_length=200) votes = models.IntegerField(default=0) def __str__(self): return self.choice_text
app02/urls.py
from django.conf.urls import patterns, url from polls import views urlpatterns = patterns(‘‘, url(r‘^$‘, views.IndexView.as_view(), name=‘index‘), url(r‘^(?P<pk>\d+)/$‘, views.DetailView.as_view(), name=‘detail‘), url(r‘^(?P<pk>\d+)/results/$‘, views.ResultsView.as_view(), name=‘results‘), url(r‘^(?P<question_id>\d+)/vote/$‘, views.vote, name=‘vote‘), )
还有另一种方法
from django.conf.urls import patterns, url from polls import views urlpatterns = patterns(‘‘, # ex: /polls/ #url(r‘^$‘, views.index, name=‘index‘), # ex: /polls/5/ url(r‘^(?P<question_id>\d+)/$‘, views.detail, name=‘detail‘), # ex: /polls/5/results/ url(r‘^(?P<question_id>\d+)/results/$‘, views.results, name=‘results‘), # ex: /polls/5/vote/ url(r‘^(?P<question_id>\d+)/vote/$‘, views.vote, name=‘vote‘), (r‘^pl/$‘, ‘polls.views.index‘), )
时间: 2024-10-25 12:38:15