Django笔记-登陆、注册（利用cookie实现）

1、项目结构：

2、关键代码：

settings.py

INSTALLED_APPS = (
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'blog',
)

MIDDLEWARE_CLASSES = (
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    #'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
)

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'test10',
        'HOST':'localhost',
        'PORT':'',
        'USER':'root',
        'PASSWORD':'passwd',

    }
}

urls.py

    url(r'^register/$', 'blog.views.register'),
    url(r'^login/$','blog.views.login'),
    url(r'^index/$', 'blog.views.index'),
    url(r'^logout/$','blog.views.logout'),

models.py

# -*- coding: utf-8 -*-
from django.db import models

class User(models.Model):
    username = models.CharField(max_length=20)
    password = models.CharField(max_length=30)

    def __unicode__(self):
        return self.username

views.py

# -*- coding: utf-8 -*-
from django.shortcuts import render, render_to_response
from django.http import HttpResponse
from django import forms
from models import User
from django.http.response import HttpResponseRedirect

class UserForm(forms.Form):
    username = forms.CharField()
    password = forms.CharField(widget=forms.PasswordInput)  

def register(req):
#处理post方法的数据
    if req.method == "POST":
        uf = UserForm(req.POST)
#如果数据有效
        if uf.is_valid():
            username = uf.cleaned_data['username']
            password = uf.cleaned_data['password']
            #username = unicode(uf.cleaned_data['username'],'UTF-8')
            #password = unicode(uf.cleaned_data['password'],'UTF-8')
            #print username,password
            #return HttpResponse('ok')
            User.objects.create(username=username,password=password)
            return HttpResponseRedirect('/login/')
        else:
            uf = UserForm()
            return render_to_response('register.html',{'uf':uf})
#处理get方法的数据
    else  :
        uf = UserForm(req.GET)
        if uf.is_valid():
            username = uf.cleaned_data['username']
            password = uf.cleaned_data['password']
            #username = unicode(uf.cleaned_data['username'],'UTF-8')
            #password = unicode(uf.cleaned_data['password'],'UTF-8')
            #print username,password
            #return HttpResponse('ok')
            User.objects.create(username=username,password=password)
            return HttpResponseRedirect('/login/')
        else:
            uf = UserForm()
            return render_to_response('register.html',{'uf':uf})

def login(req):
    if req.method == "POST":
        uf = UserForm(req.POST)
        if uf.is_valid():
            username = uf.cleaned_data['username']
            password = uf.cleaned_data['password']
#获取名字和密码
            users = User.objects.filter(username__exact=username,password__exact=password)
            if users:
#获取到response
                response = HttpResponseRedirect('/index/')
#保存到cookie
                response.set_cookie('username', username, 3600)
                return response

            else:
                return HttpResponseRedirect('/login/')
            #return HttpResponseRedirect('/login/')
        else:
            uf = UserForm()
            return render_to_response('login.html',{'uf':uf})
    else  :
        uf = UserForm(req.GET)
        if uf.is_valid():
            username = uf.cleaned_data['username']
            password = uf.cleaned_data['password']
            users = User.objects.filter(username__exact=username,password__exact=password)
            if users:
                #return HttpResponseRedirect('/index/')
                response = HttpResponseRedirect('/index/')
                #response.set_signed_cookie('username', username, 3600)
                response.set_cookie('username',username,3600)
            else:
                return HttpResponseRedirect('/login/')
            #return HttpResponseRedirect('/login/')
        else:
            uf = UserForm()
            return render_to_response('login.html',{'uf':uf})

def index(req):
    #return HttpResponse('ok')
    username = req.COOKIES.get('username','')
    #return HttpResponse('welcome %s'% username)
    return render_to_response('index.html',{'username':username})

def logout(req):
#    删除cookie
     response = HttpResponse('logout')
     response.delete_cookie('username')
     return response

register.html

<body>
  <form method="post">
    {{uf.as_p}}
    <input type="submit" value="OK"/>
  </form>
</body>

login.html

<body>
  <form method="post">
    {{uf.as_p}}
    <input type="submit" value="OK"/>
  </form>
</body>

index.html

<body>
  <div>
    <h1>welcome , {{username}}</h1>
    <a href='/logout/'>logou</a>
  </div>
</body>

3、效果截图：

注册：

登陆：

登陆成功：

注销：

再次输入index主体页面，已经删除了cookie，效果如下：

在数据库中插入的数据（推荐使用SQLyog，这个真心不错）：