151 lines
6.2 KiB
HTML
151 lines
6.2 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<title>CodeIgniter URLs : CodeIgniter User Guide</title>
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<style type='text/css' media='all'>@import url('../userguide.css');</style>
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<link rel='stylesheet' type='text/css' media='all' href='../userguide.css' />
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<script type="text/javascript" src="../nav/nav.js"></script>
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<script type="text/javascript" src="../nav/prototype.lite.js"></script>
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<script type="text/javascript" src="../nav/moo.fx.js"></script>
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<script type="text/javascript" src="../nav/user_guide_menu.js"></script>
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<meta http-equiv='expires' content='-1' />
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<meta http-equiv= 'pragma' content='no-cache' />
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<meta name='robots' content='all' />
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<meta name='author' content='ExpressionEngine Dev Team' />
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<meta name='description' content='CodeIgniter User Guide' />
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</head>
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<body>
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<!-- START NAVIGATION -->
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<div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
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<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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<div id="masthead">
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<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
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<tr>
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<td><h1>CodeIgniter User Guide Version 2.1.3</h1></td>
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<td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td>
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</tr>
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</table>
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</div>
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<!-- END NAVIGATION -->
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<!-- START BREADCRUMB -->
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<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
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<tr>
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<td id="breadcrumb">
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<a href="http://codeigniter.com/">CodeIgniter Home</a> ›
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<a href="../index.html">User Guide Home</a> ›
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URLS
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</td>
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<td id="searchbox"><form method="get" action="http://www.google.com/search"><input type="hidden" name="as_sitesearch" id="as_sitesearch" value="codeigniter.com/user_guide/" />Search User Guide <input type="text" class="input" style="width:200px;" name="q" id="q" size="31" maxlength="255" value="" /> <input type="submit" class="submit" name="sa" value="Go" /></form></td>
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</tr>
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</table>
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<!-- END BREADCRUMB -->
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<br clear="all" />
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<!-- START CONTENT -->
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<div id="content">
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<h1>CodeIgniter URLs</h1>
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<p>By default, URLs in CodeIgniter are designed to be search-engine and human friendly. Rather than using the standard "query string"
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approach to URLs that is synonymous with dynamic systems, CodeIgniter uses a <strong>segment-based</strong> approach:</p>
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<code>example.com/<var>news</var>/<dfn>article</dfn>/<samp>my_article</samp></code>
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<p class="important"><strong>Note:</strong> Query string URLs can be optionally enabled, as described below.</p>
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<h2>URI Segments</h2>
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<p>The segments in the URL, in following with the Model-View-Controller approach, usually represent:</p>
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<code>example.com/<var>class</var>/<dfn>function</dfn>/<samp>ID</samp></code>
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<ol>
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<li>The first segment represents the controller <strong>class</strong> that should be invoked.</li>
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<li>The second segment represents the class <strong>function</strong>, or method, that should be called.</li>
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<li>The third, and any additional segments, represent the ID and any variables that will be passed to the controller.</li>
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</ol>
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<p>The <a href="../libraries/uri.html">URI Class</a> and the <a href="../helpers/url_helper.html">URL Helper</a>
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contain functions that make it easy to work with your URI data. In addition, your URLs can be remapped using the
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<a href="routing.html">URI Routing</a> feature for more flexibility.</p>
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<h2>Removing the index.php file</h2>
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<p>By default, the <strong>index.php</strong> file will be included in your URLs:</p>
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<code>example.com/<var>index.php</var>/news/article/my_article</code>
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<p>You can easily remove this file by using a .htaccess file with some simple rules. Here is an example
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of such a file, using the "negative" method in which everything is redirected except the specified items:</p>
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<code>RewriteEngine on<br />
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RewriteCond $1 !^(index\.php|images|robots\.txt)<br />
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RewriteRule ^(.*)$ /index.php/$1 [L]</code>
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<p>In the above example, any HTTP request other than those for index.php, images, and robots.txt is treated as
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a request for your index.php file.</p>
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<h2>Adding a URL Suffix</h2>
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<p>In your <dfn>config/config.php</dfn> file you can specify a suffix that will be added to all URLs generated
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by CodeIgniter. For example, if a URL is this:</p>
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<code>example.com/index.php/products/view/shoes</code>
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<p>You can optionally add a suffix, like <kbd>.html</kbd>, making the page appear to be of a certain type:</p>
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<code>example.com/index.php/products/view/shoes.html</code>
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<h2>Enabling Query Strings</h2>
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<p>In some cases you might prefer to use query strings URLs:</p>
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<code>index.php?c=products&m=view&id=345</code>
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<p>CodeIgniter optionally supports this capability, which can be enabled in your <dfn>application/config.php</dfn> file. If you
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open your config file you'll see these items:</p>
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<code>$config['enable_query_strings'] = FALSE;<br />
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$config['controller_trigger'] = 'c';<br />
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$config['function_trigger'] = 'm';</code>
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<p>If you change "enable_query_strings" to TRUE this feature will become active. Your controllers and functions will then
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be accessible using the "trigger" words you've set to invoke your controllers and methods:</p>
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<code>index.php?c=controller&m=method</code>
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<p class="important"><strong>Please note:</strong> If you are using query strings you will have to build your own URLs, rather than utilizing
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the URL helpers (and other helpers that generate URLs, like some of the form helpers) as these are designed to work with
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segment based URLs.</p>
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</div>
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<!-- END CONTENT -->
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<div id="footer">
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<p>
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<a href="#top">Top of Page</a> ·
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<a href="../index.html">User Guide Home</a> ·
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Next Topic: <a href="controllers.html">Controllers</a></p>
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<p><a href="http://codeigniter.com">CodeIgniter</a> · Copyright © 2006 - 2012 · <a href="http://ellislab.com/">EllisLab, Inc.</a></p>
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</div>
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</body>
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</html>
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