上节初步实现了登录和注册模块,这节我们进一步实现“记住我”功能。
大体功能分为以下模块:
1.在登录时如果勾选记住我,那么就将用户username存进cookie中,跳转到index页面;
2.此时,如果不进行登出,如果直接返回登录页面,那么就会判断cookie中是否存在username,如果存在,就直接跳转到Index界面,也就是不用再一次登录;
3.如果进行登出,则删除cookie中的username,并返回登录界面;
4.如果登录时不勾选记住我,那么跳转到index界面后,在访问登录界面不会继续跳转到Index界面;
5.若直接访问Index界面,会判断cookie中是否存在username,如果不存在,则会提示对不起,请先登录,三秒之后跳转到登录界面。
urls.py
from django.urls import path
from . import views
app_name='login'
urlpatterns=[
path('',views.login,name='login'),
path('register/',views.register,name='register'),
path('register/savereg/',views.save_register,name='savereg'),
path('tologin/',views.to_login,name='tologin'),
path('logout/',views.logout,name='logout'),
path('index/',views.index,name='index'),
]
views.py
from django.shortcuts import render, redirect
from .models import Users
import datetime
# Create your views here.
def login(request):
if request.get_signed_cookie('username', salt='SSS', default=None) != None:
username = request.get_signed_cookie('username', salt='SSS', default=None)
return render(request, 'login/index.html', {'username': username})
return render(request,'login/login.html')
def register(request):
return render(request,'login/register.html')
def save_register(request):
if request.method == 'POST':
phone=request.POST.get('phone')
username=request.POST.get('username')
password=request.POST.get('password')
repassword=request.POST.get('repassword')
birthday=request.POST.get('birthday')
errormsg=''
if phone =='':
errormsg='手机号不能为空'
elif password =='':
errormsg='密码不能为空'
else:
if password!=repassword:
errormsg='确认密码与密码不一致'
if errormsg == '':
Users.objects.create(phone=phone,username=username,password=password,birthday=birthday,
regday=datetime.datetime.now().strftime('%Y-%m-%d'))
return render(request,'login/pagejump.html')
else:
return render(request,'login/register.html',context={'errormsg':errormsg})
def to_login(request):
if request.method == 'POST':
phone=request.POST.get('phone')
remember=request.POST.get('remember')
if phone == '':
return render(request, 'login/login.html', {'errormsg': '用户名不能为空'})
try:
user_obj = Users.objects.get(phone=phone)
except Users.DoesNotExist:
return render(request,'login/login.html',{'errormsg':'账号不存在,请重新输入'})
pwd=user_obj.password
password = request.POST.get('password')
if password != '':
repwd=password
if pwd == repwd:
username=user_obj.username
if remember is not None:
response = render(request, 'login/index.html',{'username':username})
response.set_signed_cookie("username", username, salt="SSS", max_age=60 * 60 * 12)
return response
else:
return render(request, 'login/index.html', {'username': username})
# return render(request, 'login/index.html',{'username':username})
else:
return render(request, 'login/login.html',{'errormsg':'密码错误'})
else:
return render(request, 'login/login.html', {'errormsg': '密码不能为空'})
def check_login(func):
def helper(request,*args,**kwargs):
if request.get_signed_cookie('username',salt='SSS',default=None) != None:
return func(request,*args,**kwargs)
else:
return render(request,'login/checklogin.html')
return helper
def logout(request):
response = redirect("/login/")
response.delete_cookie("username")
return response
@check_login
def index(request):
return render(request,'login/index.html')
index.html
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<h3><p>hello {{username}}</p></h3><span><p><a href="{% url 'login:logout'%}">登出</a></p></span>
</body>
</html>
login.html
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>盒老师</title>
<meta name="keywords" content="盒老师">
<meta name="content" content="盒老师">
<meta http-equiv="X-UA-Compatible" content="IE=edge, chrome=1">
<link type="text/css" rel="stylesheet" href="/static/login/css/login.css">
<script type="text/javascript" src="/static/login/js/jquery.min.js"></script>
</head>
<body class="login_bj" >
<div class="zhuce_body" style="position:absolute;left:130px;top:300px;">
<div class="zhuce_kong login_kuang" >
<div class="zc">
<div class="bj_bai" style="height:330px;">
<h3>登录</h3>
<form action="{% url 'login:tologin'%}" method="post">
<p style="color: red;margin-top: 0px;">{{errormsg}}</p>
<input name="phone" type="text" class="kuang_txt" placeholder="手机号">
<input name="password" type="text" class="kuang_txt" placeholder="密码">
<div>
<input name="remember" type="checkbox" value="remember" ><span>记住我</span><a href="#" style="float:rigth;">忘记密码</a>
</div>
<div>
<p>没有账号?<a href="{% url 'login:register'%}">立即注册</a></p>
</div>
<input style="margin-top:2px;" name="登录" type="submit" class="btn_zhuce" value="登录">
</form>
</div>
</div>
</div>
</div>
</body>
</html>
checklogin.html
<body>
<div align="center" style="border: 1px solid blueviolet;
position:absolute;left:500px;top: 200px;width: 430px;height: 50px;">
<p style="text-align: center;font-size: 20px;">对不起!请先登录!还有<span id="sp">3</span>秒跳转到登录界面...</p>
</div>
<script>
//onload事件会在页面加载完后立即发生
onload=function () {
//etInterval() 方法可按照指定的周期(以毫秒计)来调用函数或计算表达式。
setInterval(go,1000)
};
var x=2;
function go() {
if (x>=0){
document.getElementById("sp").innerText=x;
}else {
kk="{% url 'login:login'%}";
}
x--;
}
</script>
</body>
到这里,登录注册也基本告一段落了。同时我的django之旅也暂时告一段落了,花了接近一个月的时间,也算是有所收获,找时间会将所有代码上传至github。接下来准备去看自然语言处理了,极大可能是自己以后工作的内容。