Django学习笔记第六篇--实战练习二--简易实现登录注册功能demo

一、绪论：

　　简易实现登录功能demo，并没有使用默认身份验证模块，所以做的也很差，关闭了csrf保护，没有认证处理cookie和session，只是简单实现了功能。另外所谓的验证码功能是伪的。

二、

　　app下的views.py models.py functionlib.py：

 1 #-*- coding:utf-8 -*-
 2 from functionlib import gethash
 3 from django.shortcuts import render,render_to_response
 4 from django.http import HttpResponse,HttpResponseRedirect
 5 from models import LoginUser
 6 
 7 
 8 
 9 # Create your views here.
10 
11 def register(request):
12     if request.method != 'POST':
13         return render_to_response("register.html")
14     else:
15         username = request.POST["user"]
16         password = request.POST["pswd"]
17         emailstr = request.POST["email"]
18         phonestr = request.POST["phone"]
19         if None in [username,password,emailstr,phonestr]:
20             return render_to_response("register.html")
21         else:
22             password = gethash(password)
23             print "ok"
24             try:
25                 LoginUser.objects.create(username=username,password=password,emailstr=emailstr,phonestr=phonestr)
26             except Exception,ex:
27                 return render_to_response("register.html")
28             return HttpResponseRedirect("/login")
29 
30 def login(request):
31     print request.COOKIES
32     if request.method != 'POST':
33         response = render_to_response("login.html")
34         response.set_cookie("login_name",None)
35         response.set_cookie("login_flag","0")
35         return response
36     else:
37         if request.COOKIES.get("login_flag") == "1":
38             loginname = request.COOKIES.get("login_name")
39             return HttpResponseRedirect("/mainpage?name=%s"%loginname)
40         else:
41             user = request.POST["user"]
42             pswd = request.POST["pswd"]
43             obj = LoginUser.objects.get(username=user)
44             if obj.password == gethash(pswd):
45                 response = HttpResponseRedirect("/verifycode")
46                 response.set_cookie("login_name",user)
47                 return response
48             else:
49                 return HttpResponseRedirect("/login")
50 
51 def verify(request):
52     if request.method != 'POST':
53         return render_to_response("verify.html")
54     else:
55         if request.POST["code"] == "bobac":
56             user = request.COOKIES.get("login_name")
57             print user
58             print request.COOKIES
59             if user == None:
60                 return HttpResponseRedirect("/login")
61             response = HttpResponseRedirect("/mainpage?name=%s"%user)
62             response.set_cookie("login_flag","1")
63             return response
63         else:
63             return HttpResponseRedirect("/verifycode")
64 
65 def main(request):
66     if request.COOKIES.get("login_flag") == "1":
67         return HttpResponse("Welcome %s!"%request.GET["name"])
68     else:
69         return HttpResponseRedirect("/login")
70 
71

1 from django.db import models
2 
3 # Create your models here.
4 
5 class LoginUser(models.Model):
6     username = models.CharField(max_length=20)
7     password = models.CharField(max_length=64)
8     emailstr = models.CharField(max_length=50)
9     phonestr = models.CharField(max_length=12)

1 import hashlib
2 
3 def gethash(text):
4     md5 = hashlib.md5()
5     md5.update(text)
6     return md5.hexdigest()

　　mysite1下的settings.py 和 urls.py

  1 """
  2 Django settings for mysite1 project.
  3 
  4 Generated by 'django-admin startproject' using Django 1.8.
  5 
  6 For more information on this file, see
  7 https://docs.djangoproject.com/en/1.8/topics/settings/
  8 
  9 For the full list of settings and their values, see
 10 https://docs.djangoproject.com/en/1.8/ref/settings/
 11 """
 12 
 13 # Build paths inside the project like this: os.path.join(BASE_DIR, ...)
 14 import os
 15 
 16 BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 17 
 18 
 19 # Quick-start development settings - unsuitable for production
 20 # See https://docs.djangoproject.com/en/1.8/howto/deployment/checklist/
 21 
 22 # SECURITY WARNING: keep the secret key used in production secret!
 23 SECRET_KEY = 't!+*ii3=^bpde5_&sehb41uqn0^tfe_1x#ews9banz1!q$bo)2'
 24 
 25 # SECURITY WARNING: don't run with debug turned on in production!
 26 DEBUG = True
 27 
 28 ALLOWED_HOSTS = []
 29 
 30 
 31 # Application definition
 32 
 33 INSTALLED_APPS = (
 34     'django.contrib.admin',
 35     'django.contrib.auth',
 36     'django.contrib.contenttypes',
 37     'django.contrib.sessions',
 38     'django.contrib.messages',
 39     'django.contrib.staticfiles',
 40     'myapp1'
 41 )
 42 
 43 MIDDLEWARE_CLASSES = (
 44     'django.contrib.sessions.middleware.SessionMiddleware',
 45     'django.middleware.common.CommonMiddleware',
 46     #'django.middleware.csrf.CsrfViewMiddleware',
 47     'django.contrib.auth.middleware.AuthenticationMiddleware',
 48     'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
 49     'django.contrib.messages.middleware.MessageMiddleware',
 50     'django.middleware.clickjacking.XFrameOptionsMiddleware',
 51     'django.middleware.security.SecurityMiddleware',
 52 )
 53 
 54 ROOT_URLCONF = 'mysite1.urls'
 55 
 56 TEMPLATES = [
 57     {
 58         'BACKEND': 'django.template.backends.django.DjangoTemplates',
 59         'DIRS': [BASE_DIR+"/templates/"],
 60         'APP_DIRS': True,
 61         'OPTIONS': {
 62             'context_processors': [
 63                 'django.template.context_processors.debug',
 64                 'django.template.context_processors.request',
 65                 'django.contrib.auth.context_processors.auth',
 66                 'django.contrib.messages.context_processors.messages',
 67             ],
 68         },
 69     },
 70 ]
 71 
 72 WSGI_APPLICATION = 'mysite1.wsgi.application'
 73 
 74 
 75 # Database
 76 # https://docs.djangoproject.com/en/1.8/ref/settings/#databases
 77 
 78 DATABASES = {
 79     'default': {
 80         'ENGINE': 'django.db.backends.mysql',
 81         'NAME': 'mysite1',
 82         'USER': 'root',
 83         'HOST': '127.0.0.1',
 84         'PORT': 3306,
 85     }
 86 }
 87 
 88 
 89 # Internationalization
 90 # https://docs.djangoproject.com/en/1.8/topics/i18n/
 91 
 92 LANGUAGE_CODE = 'en-us'
 93 
 94 TIME_ZONE = 'UTC'
 95 
 96 USE_I18N = True
 97 
 98 USE_L10N = True
 99 
100 USE_TZ = True
101 
102 
103 # Static files (CSS, JavaScript, Images)
104 # https://docs.djangoproject.com/en/1.8/howto/static-files/
105 
106 STATIC_URL = '/static/'

 1 from django.conf.urls import include, url
 2 from django.contrib import admin
 3 from myapp1 import views
 4 
 5 urlpatterns = [
 6     # Examples:
 7     # url(r'^$', 'mysite1.views.home', name='home'),
 8     # url(r'^blog/', include('blog.urls')),
 9 
10     url(r'^admin/', include(admin.site.urls)),
11     url(r'^register/', "myapp1.views.register"),
12     url(r'^login/', "myapp1.views.login"),
13     url(r'^mainpage/', "myapp1.views.main"),
14     url(r'^verifycode/', "myapp1.views.verify"),
15 ]

templates下几个静态文件：

 1 <!DOCTYPE html>
 2 <html>
 3 <head>
 4     <title>陈然的网站注册</title>
 5 </head>
 6 <body>
 7     <center>
 8         <form action="http://127.0.0.1:8000/register/" method="post">
 9             <p>用户名：<input type="text" name="user"/></p>
10             <p>密  码：<input type="password" name="pswd"/></p>
11             <p>邮  箱：<input type="text" name="email"/></p>
12             <p>手  机：<input type="text" name="phone"/></p>
13             <input type="submit" value="注册">
14 
15         </form>
16     </center>
17 </body>
18 </html>

<!DOCTYPE html>
<html>
<head>
    <title>陈然的网站登录</title>
</head>
<body>
    <center>
        <form action="http://127.0.0.1:8000/login/" method="post">
            <p>用户名：<input type="text" name="user"/></p>
            <p>密  码：<input type="password" name="pswd"/></p>
            <input type="submit" value="登录">

        </form>
    </center>
</body>
</html>

总结知识点

1、神坑：html中action的url最后要加/否则会有报错

2、重定向和返回文件：

1 #1返回静态文件：
2 render_to_response("index.html")
3 #这个路径在settings.py中保存在templates的DIR list中
4 
5 #2重定向：
6 HttpResponseRedirect("/main/xxx")#参数是相对URL

3、后台管理：

1 python manage.py migrate  #创建默认数据库
2 python manage.py createsuperuser#创建超级用户管理后台的
3 python manage.py makemigrations myapp1#更新app库结构
4 python manage.py migrate myapp1#创建app的库表结构