/,, views. article detail
The code above maps URL paths to Python callback functions ("views"). The path strings use parameter tags to
capture"values from the URLs. When a user requests a page, Django runs through each path, in order, and stops at
the first one that matches the requested URL. (If none of them matches, Django calls a special-case 404 view This
is blazingly fast, because the paths are compiled into regular expressions at load time
Once one of the URL patterns matches, Django calls the given view, which is a Python function. Each view gets
passed a request object -which contains request metadata -and the values captured in the pattern
For example, if a user requested the url "/articles /2005/05/39323/,, Django would call the function
news. views. article_detail(request, year=2005, month=5, pk=39323
Write your viewsil
Each view is responsible for doing one of two things Returning an HttpresponSe object cantaining the content for the
requested page or raising an exception such as Http404. The rest is up to you
Generally, a view retrieves data according to the parameters, loads a template and renders the template with the
retrieved data heres an example view for year archive from above
mysIte newS/lews. py
from django. shortcuts import render
from, models import Article
def year archive(request, year:
a list= Article objects. filter(pub date year=year)
context= year: year, 'article list: a list
return render(request, news /year archive. html, context)
This example uses Django's template system, which has several powerful features but strives to stay simple enough
for non-programmers to use
Design your templates
The code above loads the news/year archive. html template
Django has a template search path, which allows you to minimize redundancy among templates. In your django
settings, you specify a list of directories to check for templates with DIRS. If a template doesnt exist in the first
directory, it checks the second, and so on
Let's say the news/year_archive. html template was found. Here's what that might look like
mysite/news/templates/news/year_archive. html
t% extends"base. html"%)
f% block title %Articles for R year H% endblock %1
f%block content %1
Articles for i year
t% for article in article_ list%
f article headline By article reporter. full_name
Published article pub_date]date: "Fi,Y"]
[% endfor %j
endblock %
Variables are surrounded by double-curly braces. &l article headline means " output the value of the article s headline
attribute " But dots aren't used only for attribute lookup. they also can do dictionary -key lookup, index lookup and
function calls
Note if article pub_dateldate Fj, Y"1 uses a Unix-style "pipe"(the" character). This is called a template filter, and it's a
way to filter the value of a variable. In this case, the date filter formats a Python datetime object in the given format(as
found in PHP's date function.
You can chain together as many filters as you' d like. You can write custom template filters. You can write custom
template tags, which run custom Python code behind the scenes
Finally, Django uses the concept of"template inheritance". That's what the 1% extends"base. html"%)does. It means
First load the template calledbase', which has defined a bunch of blocks, and fill the blocks with the following
blocks. "In short, that lets you dramatically cut down on redundancy in templates: each template has to define only
what's unique to that template
Here's what the "base. html template, including the use of static files, might look like
mysite/templates/base. h
9 load static %
f% block title %H% endblock %]</tit
</head>
<body>
<img src=t% static "images/sitelogo png"%]"alt="LOgo"/>
block content %H% endblock
</body>
</html>
Simplistically, it defines the look-and-feel of the site(with the site's logo), and provides holes"for child templates to
fill. This makes a site redesign as easy as changing a single file -the base template
It also lets you create multiple versions of a site, with different base templates, while reusing child templates
Django's creators have used this technique to create strikingly different mobile versions of sites- simply by creating
a new base template
Note that you don ' t have to use Django' s template system if you prefer another system while django's template
system is particularly well-integrated with Django's model layer, nothing forces you to use it. For that matter, you
don' t have to use Django's database APl, either. You can use another database abstraction layer, you can read XML
files, you can read files off disk, or anything you want. Each piece of Django- models, views, templates -is
decoupled from the next
This is just the surfaced
This has been only a quick overview of Django's functionality Some more useful features
A caching framework that integrates with memcached or other backends
A syndication framework that makes creating RSS and Atom feeds as easy as writing a small Python class
More sexy automatically-generated admin features -this overview barely scratched the surface
The next obvious steps are for you to download Diango, read the tutorial and join the community. Thanks for your
interest
Quick install guides
Before you can use Django, you'll need to get it installed We have a complete installation guide that covers all the
possibilities; this guide will guide you to a simple, minimal installation that'll work while you walk through the
introduction
Install Python I
Being a Python Web framework, Django requires Python. See What Python version can l use with Diango? for
details. Python includes a lightweight database called SQLite so you wont need to set up a database just yet
GetthelatestversionofPythonathttps://www.python.org/downloadslorwithyouroperatingsystemspackage
manager.
You can verify that Python is installed by typing python from your shell; you should see something like
Python 3.4.X
[GCC4×] on linux
Type"holp","copyright", "credits"or"license"for more information
Set up a database
This step is only necessary if you' d like to work with a "large" database engine like PostgreSQL, MysQL, or Oracle
To install such a database. consult the database installation information
Remove any old versions of Django
If you are upgrading your installation of Django from a previous version, you will need to uninstall the old Diango
version before installing the new version
Install Django
You've got three easy options to install Django
Install an official release. This is the best approach for most users
Install a version of Django provided by your operating system distribution
Install the latest development version. This option is for enthusiasts who want the latest-and-greatest features
and aren't afraid of running brand new code. You might encounter new bugs in the development version but
reporting them helps the development of Django. Also, releases of third-party packages are less likely to be
compatible with the development version than with the latest stable releas
Always refer to the documentation that corresponds to the version of Django you re using
If you do either of the first two steps, keep an eye out for parts of the documentation marked new in development
version. That phrase flags features that are only available in development versions of Django, and they likely wont
work with an official release
Verifying
To verify that Django can be seen by python, type python from your shell. then at the python prompt, try to import
Django</B>
</div>
<div class="title2"><div class="title_more">(系统自动生成,下载前可以参看下载内容)</div><h2>下载文件列表</h2></div>
<div class="font12">
</div>
<div id="show_memo" class="show_info">
<div class="title2"><h2>相关说明</h2></div>
<div class="box_content">
<ul>
<li>本站资源为会员上传分享交流与学习,如有侵犯您的权益,<a href="/about/contact.php" target="_blank">请联系我们删除</a>.</li>
<li>本站是交换下载平台，提供交流渠道，下载内容来自于网络，除下载问题外，其它问题请自行<a href="https://www.baidu.com" target="_blank">百度</a>。</li>
<li class="red">本站已设置防盗链，请勿用迅雷、QQ旋风等多线程下载软件下载资源，下载后用<a href="http://rarlab.com/download.htm" target="_blank">WinRAR最新版</a>进行解压.</li>
<li>如果您发现内容无法下载，请稍后再次尝试；或者到消费记录里找到下载记录<a href="/user/log.php?type=5" target="_blank">反馈给我们</a>.</li>
<li>下载后发现下载的内容跟说明不相乎，请到消费记录里找到下载记录<a href="/user/log.php?type=5" target="_blank">反馈给我们</a>，经确认后退回积分.</li>
<li>如下载前有疑问，可以通过点击"提供者"的名字，查看对方的联系方式，联系对方咨询.</li>
</ul>
</div>
</div>
<div class="detail_line">
<B>相关搜索</B>:
<a href="/search.php?keyword=django2.0docomentforbeginneraspdfformat" target="_blank">django2.0docomentforbeginneraspdfformat</a> </div>
<form name="search" action="/search.php" method="get">
<div class="detail_line">
输入关键字，在本站1000多万海量源码库中尽情搜索：<INPUT maxLength="50" size="20" name="keyword" value="">
<input type="submit" value="搜 索" name=_search2>
</div>
</form>
</div><!-- Show end. -->
</div>
<div id="sidebar" class="fr"><!-- Left begin -->
<!--频道分类开始-->
<div class="box">
<div class="title"><h2>下载资源分类</h2></div>
<div class="channel_sort">
<h3><a href="/21/">移动开发</a></h3>
<h3><a href="/16/">开发技术</a></h3>
<h3><a href="/15/">课程资源</a></h3>
<h3><a href="/19/">网络技术</a></h3>
<h3><a href="/12/">操作系统</a></h3>
<h3><a href="/10/">安全技术</a></h3>
<h3><a href="/18/">数据库</a></h3>
<h3><a href="/14/">行业</a></h3>
<h3><a href="/13/">服务器应用</a></h3>
<h3><a href="/11/">存储</a></h3>
<h3><a href="/20/">信息化</a></h3>
<h3><a href="/17/">考试认证</a></h3>
<h3><a href="/22/">云计算</a></h3>
<h3><a href="/23/">大数据</a></h3>
<h3><a href="/24/">跨平台</a></h3>
<h3><a href="/25/">音视频</a></h3>
<h3><a href="/26/">游戏开发</a></h3>
<h3><a href="/27/">人工智能</a></h3>
<h3><a href="/28/">区块链</a></h3>
</div>
</div>
<div class="box">
<div class="title"><h2>资源分类</h2></div>
<div class="channel_sort">
<h3><a href="/1501/">3G/移动开发</a></h3>
<h3><a href="/1502/">C/C++</a></h3>
<h3><a href="/1503/">Java</a></h3>
<h3><a href="/1504/">.Net</a></h3>
<h3><a href="/1505/">PHP</a></h3>
<h3><a href="/1506/">嵌入式</a></h3>
<h3><a href="/1507/">软件测试</a></h3>
<h3><a href="/1508/">数据库</a></h3>
<h3><a href="/1509/">网络管理</a></h3>
<h3><a href="/1510/">网页制作</a></h3>
<h3><a href="/1511/">游戏开发</a></h3>
<h3><a href="/1512/">专业指导</a></h3>
<h3><a href="/1513/">讲义</a></h3>
<h3><a href="//"></a></h3>
</div>
</div>
<div class="box"><!--本站统计开始-->
<div class="title"><h2>本站统计</h2></div>
<UL class="info_ul">
<LI>资源总数：<b>630</b>万个</LI>
<LI>资源大小：<b>15</b>TB</LI>
<LI>今日更新：468个</LI>
<LI>注册人数：225万</LI>
<LI>今日注册：838</LI>
</UL>
</div><!--本站统计结束-->
<div class="box"><!--Intro begin.-->
<div class="title"><h2><a href="/register.php">加入“点数信息”会员</a></h2></div>
<div class="box_content">
“点数信息”是专业的,大型的源码,编程资源等搜索,交换平台,旨在帮助软件开发人员提供源码,编程资源下载,技术交流等服务!目前源码资源大小已超过8TB。<br>
超值价格，购买下载积分，即时到帐，无需等待马上可以下载你所需的资料。无限期使用，一次购买越多越优惠！<br>
</div>
</div><!--Intro end.-->
<div class="box"><!--Intro begin.-->
<div class="title"><h2><a href="/register.php">免费获取积分</a></h2></div>
<div class="box_content">
免费获得积分的途径是通过会员下载您上传的资料，您的帐户即增加积分。<br>
立即上传资料，越多越好，被搜索到的机会越大！越早上传越早得积分，下载次数越多，您的积分越多。<br>
</div>
</div><!--Intro end.-->
<!--合作伙伴开始-->
<div class="box">
<div class="title1"><h2>合作伙伴</h2></div>
<!--推荐商家具体内容开始-->
<div class="channel_friend"><!--最多七个字-->
<ul>
<li><a href="http://www.codeproject.com/" target="_blank">CodeProject</a></li>
<li><a href="http://www.dssz.com/" target="_blank">搜珍网</a></li>
<li><a href="http://www.5177517.com/" target="_blank">建筑工程网</a></li>
<li><a href="http://www.csdn.net/" target="_blank">CSDN.net</a></li>
<li><a href="http://www.5imomo.com/" target="_blank">建筑资料网</a></li>
</ul>
</div>
</div>
</div><!-- Left end -->
</div>
<div id="footer">
<div class="content">
<div class="cr">
客服QQ:6133080 <a href="mailto:info@dssz.net">联系站长</a> · <a href="/about/guestbook.php" rel="nofollow">版权投诉</a> · <a href="/about/guestbook.php" rel="nofollow">网站修改建议</a>
</div>
<div class="cl">
© 1999-2048 <a href="https://www.dssz.net" target="_blank"><font color=red>dssz.net</font></a> <a href="https://beian.miit.gov.cn/" target="_blank">粤ICP备11031372号</a>
</div>
</div>
</div>
</body>
</html>
<script>
(function(){
var bp = document.createElement('script');
var curProtocol = window.location.protocol.split(':')[0];
if (curProtocol === 'https') {
bp.src = 'https://zz.bdstatic.com/linksubmit/push.js';
}
else {
bp.src = 'http://push.zhanzhang.baidu.com/push.js';
}
var s = document.getElementsByTagName("script")[0];
s.parentNode.insertBefore(bp, s);
})();
//-->
</SCRIPT>
