Django初步完成：登录、注册、退出
python环境：python2.7
开发工具:pycharm
项目名称：mysite5
app名称：online
settings:映射app路径
INSTALLED_APPS = [ 'django.contrib.admin', 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.messages', 'django.contrib.staticfiles', 'online', ]
数据库：model:
1 # -*- coding: utf-8 -*- 2 from __future__ import unicode_literals 3 from django.db import models 4 5 # Create your models here.python manage.py syncdb 6 7 8 9 class User(models.Model): 10 username = models.CharField(max_length=50,unique=True) 11 password = models.CharField(max_length=50) 12 unique = True 13 def __unicode__(self): 14 return self.username
命令生成数据库：
python manage.py makemigrations #生成配置文件
python manage.py migrate #生成表
python manage.py createsuperuser #生成超级用户
项目下url.py匹配：#也称一级路由
1 from django.conf.urls import url,include 2 from django.contrib import admin 3 from online import models,views 4 urlpatterns = [ 5 url(r'^admin/', admin.site.urls), 6 url(r'^online/', include('online.urls')), 7 8 ]
app下url.py：#也称二级路由
1 from django.conf.urls import url,include 2 from django.contrib import admin 3 from online import models,views 4 urlpatterns = [ 5 url(r'^admin/', admin.site.urls), 6 url(r'^$', views.login, name='login'), 7 url(r'^login/$', views.login, name='login'), 8 url(r'^regist/$', views.regist, name='regist'), 9 url(r'^index/$', views.index, name='index'), 10 url(r'^logout/$', views.logout, name='logout'), 11 ]
view.py逻辑函数：#称为视图层
1 # -*- coding: utf-8 -*- 2 from __future__ import unicode_literals 3 4 from django.shortcuts import render 5 6 # Create your views here. 7 from django.shortcuts import render,render_to_response 8 from django.http import HttpResponse,HttpResponseRedirect 9 from django.template import RequestContext 10 from django import forms 11 from models import User 12 13 #表单 14 class UserForm(forms.Form): 15 username = forms.CharField(label='用户名',max_length=100) 16 password = forms.CharField(label='密码',widget=forms.PasswordInput()) 17 18 19 #注册 20 def regist(req): 21 if req.method == 'POST': 22 uf = UserForm(req.POST) 23 if uf.is_valid(): 24 #获得表单数据 25 username = uf.cleaned_data['username'] 26 password = uf.cleaned_data['password'] 27 #添加到数据库 28 filterResult=User.objects.filter(username=username) 29 if len(filterResult)>0: 30 context={'error':'用户名已存在，请从新输入！'} 31 return render(req,'regist.html',context) 32 else: 33 User.objects.create(username= username,password=password) 34 return render(req,'regust_success.html') 35 else: 36 uf = UserForm() 37 return render(req,'regist.html',{'uf':uf}) 38 39 #登陆 40 def login(req): 41 if req.method == 'POST': 42 uf = UserForm(req.POST) 43 if uf.is_valid(): 44 #获取表单用户密码 45 username = uf.cleaned_data['username'] 46 password = uf.cleaned_data['password'] 47 #获取的表单数据与数据库进行比较 48 user = User.objects.filter(username__exact = username,password__exact = password) 49 if user: 50 #比较成功，跳转index 51 response = HttpResponseRedirect('/online/index/') 52 #将username写入浏览器cookie,失效时间为3600 53 response.set_cookie('username',username,3600) 54 return response 55 else: 56 #比较失败，还在login 57 return HttpResponseRedirect('/online/login/') 58 else: 59 uf = UserForm() 60 return render(req,'login.html',{'uf':uf}) 61 62 #登陆成功 63 def index(req): 64 username = req.COOKIES.get('username','') 65 return render(req,'index.html' ,{'username':username}) 66 67 #退出 68 def logout(req): 69 response = HttpResponse('logout !!') 70 #清理cookie里保存username 71 response.delete_cookie('username') 72 return render(req,'login.html')
项目下->templates #模板 存放HTML文件得
登录页面：index.html
1 <?xml version="1.0" encoding="UTF-8"?> 2 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> 3 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> 4 <head> 5 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> 6 <title>登陆</title> 7 </head> 8 9 <body> 10 <h1>登陆页面：</h1> 11 <form method = 'post' enctype="multipart/form-data"> 12 {% csrf_token %} 13 <p><label>用户名：</label><input type="text" name="username" /></p> 14 <p><label>密    码：</label><input type="password" name="password"/></p> 15 {# {{uf.as_p}}#} 16 <input type="submit" value = "ok" /> 17 </form> 18 <br> 19 <a href="http://127.0.0.1:8000/online/regist/">注册</a> 20 </body> 21 </html>
注册页面：regist.html
1 <?xml version="1.0" encoding="UTF-8"?> 2 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> 3 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> 4 <head> 5 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> 6 <title>注册</title> 7 </head> 8 9 <body> 10 <h1>注册页面：</h1> 11 <form method = 'post' enctype="multipart/form-data"> 12 {% csrf_token %} 13 {{ error }} 14 <p><label>用户名：</label><input type="text" name="username" /></p> 15 <p><label>密    码：</label><input type="password" name="password"/></p> 16 <input type="submit" value = "ok" /> 17 </form> 18 <br> 19 <a href="http://127.0.0.1:8000/online/login/">登陆</a> 20 </body> 21 </html>
注册成功页面：login.html
1 <!DOCTYPE html> 2 <html lang="en"> 3 <head> 4 <meta charset="UTF-8"> 5 <title>Title</title> 6 </head> 7 <body> 8 <p>注册成功！</p> 9 <a href="http://127.0.0.1:8000/online/login/">登陆</a> 10 </body> 11 </html>
登录成功页面：index.html
1 <?xml version="1.0" encoding="UTF-8"?> 2 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> 3 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> 4 <head> 5 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> 6 <title></title> 7 </head> 8 9 <body> 10 <h1>welcome {{username}} !</h1> 11 <br> 12 <a href="http://127.0.0.1:8000/online/logout/">退出</a> 13 </body> 14 </html>
最后把服务器端口改成自己电脑得IP地址：
我是在pycharm里面改的
最后让所有人都可以访问：
在settings.py最下面添加
ALLOWED_HOSTS = ['*']
