Python快速建站系列-Part.Three-注册和登录

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上一个Part已经给TSSS编好了一个简单的Web服务，网页的基础模版也写好了，那从这个Part开始就慢慢增加编写功能。

先写基础功能：注册和登录的实现

看一下users的数据库规范然后再写代码

#数据库规范
codedb:users
	_id 		        ID
	username 	　　　　　用户名
	password     	　　　　　密码
	nickname	        昵称
        roleid               　　权限声明

先写出来注册页面signup.html↓

 1 {% extends "main.html" %}
 2 {% block content %}
 3 <form role="form"  action="/sign/up" method="POST">
 4     <div class="form-group">
 5         <label for="exampleInput"></label>用户名<input class="form-control" name="username" />
 6     </div>
 7     <div class="form-group">
 8         <label for="exampleInputPassword1">密码</label><input type="password" class="form-control" id="exampleInputPassword1" name="password" />
 9     </div>
10     <div class="form-group">
11         <label for="exampleInput">昵称</label><input class="form-control"  name="nickname" />
12     </div>
13     <div class="checkbox">
14         <label><input type="checkbox" />Check me out</label>
15     </div> <button type="submit" class="btn btn-default">提交</button>
16 </form>
17 {% end %}

再写个登录页面signin.html↓

 1 {% extends "main.html" %}
 2 {% block content %}
 3 <form role="form" action="/sign/in" method="POST">
 4     <div class="form-group">
 5         <label for="exampleInput"></label>用户名<input class="form-control" name="username" />
 6     </div>
 7     <div class="form-group">
 8         <label for="exampleInputPassword1">密码</label><input type="password" class="form-control" id="exampleInputPassword1" name="password" />
 9     </div>
10     <div class="checkbox">
11         <label><input type="checkbox" />Check me out</label>
12     </div> <button type="submit" class="btn btn-default">登录</button>
13 </form>
14 {% end %}

然后写SignHandler↓

 1 class SignHandler(web.RequestHandler):
 2     def get(self,choice):
 3         if choice == ‘in‘:
 4             self.render(‘signin.html‘)
 5         else if choice == ‘up‘:
 6             self.render(‘signup.html‘)
 7     def post(self,choice):
 8         coll = self.application.db.users
 9         if choice == ‘in‘:
10             username = self.get_argument(‘username‘)
11             if coll.find_one({‘username‘:username}):
12                 if self.get_argument(‘password‘)==coll.find_one({‘username‘:username})[‘password‘]:
13                     self.set_cookie(‘username‘,username)
14                     self.set_cookie(‘nickname‘,coll.find_one({‘username‘:username})[‘nickname‘])
15                     self.redirect(‘/‘)
16                 else:
17                     self.write({‘error‘:‘password is wrong‘})
18             else:
19                 self.write({‘error‘:‘no this user‘})
20         else if choice == ‘up‘:
21             username = self.get_argument(‘username‘)
22             password = self.get_argument(‘password‘)
23             nickname = self.get_argument(‘nickname‘)
24             if coll.find_one({‘username‘:username}):
25                 self.write({‘error‘:‘the username has been used‘})
26             else:
27                 coll.insert({‘username‘:username,‘password‘:password,‘nickname‘:nickname,‘roleid‘:0})
28                 self.redirect(‘/‘)

这样注册和登录的功能就实现了

--Part.Three--