创建项目与应用
django-admin startproject mysite
python manage startapp online
创建完成后目录构如下：
打开mysite/mysite/settings.py文件，将应用添加进去：
INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'online',
]
设计数据库
打开mysite/online/models.py文件，添加如下内容：
from django.db import models
# Create your models here.
class User(models.Model):
username = models.CharField(max_length=50)
password = models.CharField(max_length=50)
def __str__(self):
return self.username
创建数据库和User表，最后生成的online_user表就是我们models.py中创建的User类。
配制URL
打开mysite/mysite/urls.py:
from django.conf.urls import url,include
from django.contrib import admin
from online import urls
urlpatterns = [
url(r'^admin/', admin.site.urls),
url(r'^online/',include('online.urls')),
]
在mysite/online/目录下创建 urls.py文件：
from django.conf.urls import url,include
from online import views
urlpatterns = [
url(r'^$',views.login,name='login'),
url(r'^login/$',views.login,name='login'),
url(r'^regist/$',views.regist,name='regist'),
url(r'^index/$',views.index,name='index'),
url(r'^logout/$',views.logout,name = 'logout'),
]
http://127.0.0.1:8000/online 登录页
http://127.0.0.1:8000/online/login/ 登录页
http://127.0.0.1:8000/online/regist/ 注册页
http://127.0.0.1:8000/online/index/ 登录成功
http://127.0.0.1:8000/online/logout/ 注销
创建视图
打开mysite/onlie/views.py文件：
from django.shortcuts import render,HttpResponse
from django import forms
from .models import User
# Create your views here.
#表单
class UserForm(forms.Form):
username = forms.CharField(label='用户名：',max_length=50)
password = forms.CharField(label='密码：',max_length=50)
#注册
def regist(request):
if request.method == 'POST':
uf = UserForm(request.POST)
if uf.is_valid():
username = uf.cleaned_data['username']
password = uf.cleaned_data['password']
User.objects.create(username=username,password=password)
return HttpResponse('regist sucess!!')
else:
uf = UserForm()
return render(request,'regist.html',{'uf':uf})
#登录
def login(request):
if request.method == 'POST':
uf = UserForm(request.POST)
if uf.is_valid():
username = uf.cleaned_data['username']
password = uf.cleaned_data['password']
user = User.objects.filter(username__exact = username,password__exact=password)
if user:
respone = render(request,'index.html')
# 将username写入浏览器cookie,失效时间为3600
respone.set_cookie('username',username,3600)
return respone
else:
return render(request,'login.html',{'uf':uf})
else:
uf = UserForm()
return render(request,'login.html',{'uf':uf})
#登录成功
def index(request):
username = request.COOKIES.get('username',None)
return render(request,'index.html',{'username':username})
#退出
def logout(request):
response = HttpResponse('logout!!!')
#清理cookie
response.delete_cookie('username')
return response
创建模板
先在mysite/online/目录下创建templates目录，接着在mysite/onlie/templates/目录下创建regist.html文件：
<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>注册</title>
</head>
<body>
<h1>注册页面：</h1>
<form method = 'post' enctype="multipart/form-data">
{% csrf_token %}
{{uf.as_p}}
<input type="submit" value = "ok" />
</form>
<br>
<a href="http://127.0.0.1:8000/online/login/">登陆</a>
</body>
</html>
在mysite/onlie/templates/目录下创建login.html文件：
<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>登陆</title>
</head>
<body>
<h1>登陆页面：</h1>
<form method = 'post' enctype="multipart/form-data">
{% csrf_token %}
{{uf.as_p}}
<input type="submit" value = "ok" />
</form>
<br>
<a href="http://127.0.0.1:8000/online/regist/">注册</a>
</body>
</html>
在mysite/onlie/templates/目录下创建index.html文件：
<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title></title>
</head>
<body>
<h1>welcome {{username}} !</h1>
<br>
<a href="http://127.0.0.1:8000/online/logout/">退出</a>
</body>
</html>
使用功能
注册：
登录：
查看cookies:
点击退出后，cookies中将不再显示用户名信息。
