Django登錄邏輯,中間用到Cookie創建、讀取、刪除、等操作

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

#表單
class UserForm(forms.Form): 
    username = forms.CharField(label='用戶名',max_length=100)
    password = forms.CharField(label='密碼',widget=forms.PasswordInput())


#注冊
def regist(req):
    if req.method == 'POST':
        uf = UserForm(req.POST)
        if uf.is_valid():
            #獲得表單數據
            username = uf.cleaned_data['username']
            password = uf.cleaned_data['password']
            #添加到數據庫
            User.objects.create(username= username,password=password)
            return HttpResponse('regist success!!')
    else:
        uf = UserForm()
    return render_to_response('regist.html',{'uf':uf}, context_instance=RequestContext(req))

#登陸
def login(req):
    if req.method == 'POST':
        uf = UserForm(req.POST)
        if uf.is_valid():
            #獲取表單用戶密碼
            username = uf.cleaned_data['username']
            password = uf.cleaned_data['password']
            #獲取的表單數據與數據庫進行比較
            user = User.objects.filter(username__exact = username,password__exact = password)
            if user:
                #比較成功，跳轉index
                response = HttpResponseRedirect('/online/index/')
                #將username寫入瀏覽器cookie,失效時間為3600
                response.set_cookie('username',username,3600)
                return response
            else:
                #比較失敗，還在login
                return HttpResponseRedirect('/online/login/')
    else:
        uf = UserForm()
    return render_to_response('login.html',{'uf':uf},context_instance=RequestContext(req))

#登陸成功
def index(req):
    username = req.COOKIES.get('username','')
    return render_to_response('index.html' ,{'username':username})

#退出
def logout(req):
    response = HttpResponse('logout !!')
    #清理cookie里保存username
    response.delete_cookie('username')
    return response
復制代碼