Django之cookie和session

cookie

history = request.COOKIES.get('history',None)
cookie_str = ''
    if history:
        cookies = history.split(',')
        if kw in cookies:
            cookies.remove(kw)
        cookies.insert(0,kw)
            # 如果存储个数大于5
        if len(cookies) >5:
                # 去掉最后一个
            cookies.pop()
        cookie_str = ','.join(cookies)
        else:
            cookies = []
            # 将本次搜索关键词放入cookies中
            cookie_str = kw
        response = render(request,'result.html',{'historys':cookies,'hot_top5':hot_top5})
        response.set_cookie('history',cookie_str)
        return response

session

def mylogin(request):

    if request.method == 'GET':
        # 从cookie中取出保存的u_name
        u_name =request.COOKIES.get('u_name','')
        return render(request,'login.html',{'u_name':u_name})
    elif request.method == 'POST':
        username = request.POST.get('username')
        password = request.POST.get('password')
        if username == 'admin' and password == 'admin123':
            # 判断有没有登陆之前访问的地址
            if request.COOKIES.get('next_url'):
                # 重定向到登录之前的地址
                response = redirect(request.COOKIES.get('next_url'))
            else:
                # 重定向到主页
                response = redirect('/')
            checkbox = request.POST.get('checkbox',None)
            # 在用户名和密码正确的情况下,判断是否记住账户
            # 如果记住账户,需要将用户的名放入cookies中,下次访问登录界面时,就可以直接从cookie中读取用户保留的信息
            if checkbox:
                response.set_cookie('u_name',username)
            else:
                response.set_cookie('u_name','')
            # 用户登录成功,将用户信息保存到session中
            request.session['u_name'] = username  
        return response