p25记住用户名

通过redis数据库中记录的session来设置页面username的值

 if user is not None :
    if user.is_active:
        login(request,user)
        response =  redirect(reverse('goods:index'))
        remember = request.POST.get('remember')
        if remember == 'on':
            response.set_cookie('username',username,max_age=7*24*3600)
        else :
            response.delete_cookie('username')