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django 学习笔记( 一）

2015-08-07 11:32 531 查看

创建项目，创建app

django-admin.py startproject project-name
django-admin.py startapp app-name

修改settings.py

# 添加app
INSTALLED_APPS = (
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'debug_toolbar',
'app-',
)
# 配置数据库
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.mysql',
'NAME': 'database',
'USER': 'root',
'PASSWORD': 'root',
'HOST': 'localhost',
'PORT': '3306',
}
}

# 更改时区：
TIME_ZONE = 'Asia/Shanghai'

修改models.py

from django.db import models

class User(models.Model):
username=models.EmailField(max_length=100)
password=models.CharField(max_length=50)

def __unicode__(self):
return self.username

修改app下的urls.py

from django.conf.urls import patterns, include, url
from django.contrib import admin
admin.autodiscover()

urlpatterns = patterns('',
url(r'^admin/', include(admin.site.urls)),
url(r'^app-name/', include('app-name.urls')),
)

修改app-name下的urls.py

from django.conf.urls import patterns, url
from app-name import views

urlpatterns = patterns('',
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'),
)

修改app-name下的views.py

#coding=utf-8
from django.shortcuts import render,render_to_response
from django.http import HttpResponse,HttpResponseRedirect
from django.template import RequestContext
from django import forms
from models import User

#表单
class UserForm(forms.Form):
username = forms.EmailField(label='用户名')
password = forms.CharField(label='密码',widget=forms.PasswordInput())

#注册
def regist(req):
if req.method == 'POST':
uf = UserForm(req.POST)
if uf.is_valid():
#获得表单数据
username = uf.cleaned_data['username']
password = uf.cleaned_data['password']
#添加到数据库
User.objects.create(username= username,password=password)
return HttpResponse('regist success!!')
else:
uf = UserForm()
return render_to_response('regist.html',{'uf':uf}, context_instance=RequestContext(req))

#登陆
def login(req):
if req.method == 'POST':
uf = UserForm(req.POST)
if uf.is_valid():
#获取表单用户密码
username = uf.cleaned_data['username']
password = uf.cleaned_data['password']
#获取的表单数据与数据库进行比较
user = User.objects.filter(username__exact = username,password__exact = password)
if user:
#比较成功，跳转index
response = HttpResponseRedirect('/ke/index/')
#将username写入浏览器cookie,失效时间为3600
response.set_cookie('username',username,3600)
return response
else:
#比较失败，还在login
return HttpResponseRedirect('/ke/login/')
else:
uf = UserForm()
return render_to_response('login.html',{'uf':uf},context_instance=RequestContext(req))

#登陆成功
def index(req):
username = req.COOKIES.get('username','')
return render_to_response('index.html' ,{'username':username})

#退出
def logout(req):
response = HttpResponse('logout !!')
#清理cookie里保存username
response.delete_cookie('username')
return response

在app-name下建立templates文件夹

index.html

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>首页</title>
</head>
<body>
<h1>welcome {{username}} !</h1>
<br>
<a href="/app-name/logout/">退出</a>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>登录</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="/app-name/regist/">注册</a>
</body>
</html>

regist.html

<!DOCTYPE html>
<html lang="en">
<head>
<meta 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="/app-name/login/">已有账号？登陆！！！</a>
</body>
</html>

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标签： django python

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