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adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]1<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
Derek Allardafd99ac2008-01-19 19:59:14 +0000[diff] [blame]2<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]3<head>
4
Derek Jonesfd93d222008-05-06 15:18:50 +0000[diff] [blame]5<title>CodeIgniter URLs : CodeIgniter User Guide</title>
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]6
7<style type='text/css' media='all'>@import url('../userguide.css');</style>
8<link rel='stylesheet' type='text/css' media='all' href='../userguide.css' />
9
admin17a890d2006-09-27 20:42:42 +0000[diff] [blame]10<script type="text/javascript" src="../nav/nav.js"></script>
admin2296fc32006-09-27 21:07:02 +0000[diff] [blame]11<script type="text/javascript" src="../nav/prototype.lite.js"></script>
admin17a890d2006-09-27 20:42:42 +0000[diff] [blame]12<script type="text/javascript" src="../nav/moo.fx.js"></script>
Derek Allardb3412372007-10-25 12:15:16 +0000[diff] [blame]13<script type="text/javascript" src="../nav/user_guide_menu.js"></script>
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]14
15<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
16<meta http-equiv='expires' content='-1' />
17<meta http-equiv= 'pragma' content='no-cache' />
18<meta name='robots' content='all' />
Derek Allard3d879d52008-01-18 19:41:32 +0000[diff] [blame]19<meta name='author' content='ExpressionEngine Dev Team' />
Derek Allardd2df9bc2007-04-15 17:41:17 +0000[diff] [blame]20<meta name='description' content='CodeIgniter User Guide' />
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]21
22</head>
23<body>
24
25<!-- START NAVIGATION -->
26<div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
27<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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29<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
30<tr>
Derek Jones6b7b11f2008-05-06 16:07:27 +0000[diff] [blame]31<td><h1>CodeIgniter User Guide Version 1.6.2</h1></td>
adminc0d5d522006-10-30 19:40:35 +0000[diff] [blame]32<td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td>
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]33</tr>
34</table>
35</div>
36<!-- END NAVIGATION -->
37
38
39<!-- START BREADCRUMB -->
40<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
41<tr>
42<td id="breadcrumb">
Derek Jones7a9193a2008-01-21 18:39:20 +0000[diff] [blame]43<a href="http://codeigniter.com/">CodeIgniter Home</a> &nbsp;&#8250;&nbsp;
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]44<a href="../index.html">User Guide Home</a> &nbsp;&#8250;&nbsp;
45URLS
46</td>
Derek Allardbc030912007-06-24 18:25:29 +0000[diff] [blame]47<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&nbsp; <input type="text" class="input" style="width:200px;" name="q" id="q" size="31" maxlength="255" value="" />&nbsp;<input type="submit" class="submit" name="sa" value="Go" /></form></td>
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]48</tr>
49</table>
50<!-- END BREADCRUMB -->
51
52<br clear="all" />
53
54
55<!-- START CONTENT -->
56<div id="content">
57
58
Derek Allardd2df9bc2007-04-15 17:41:17 +0000[diff] [blame]59<h1>CodeIgniter URLs</h1>
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]60
Derek Allardd2df9bc2007-04-15 17:41:17 +0000[diff] [blame]61<p>By default, URLs in CodeIgniter are designed to be search-engine and human friendly. Rather than using the standard "query string"
62approach to URLs that is synonymous with dynamic systems, CodeIgniter uses a <strong>segment-based</strong> approach:</p>
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]63
64<code>www.your-site.com/<var>news</var>/<dfn>article</dfn>/<samp>my_article</samp></code>
65
66<p class="important"><strong>Note:</strong> Query string URLs can be optionally enabled, as described below.</p>
67
68<h2>URI Segments</h2>
69
70<p>The segments in the URL, in following with the Model-View-Controller approach, usually represent:</p>
71
72<code>www.your-site.com/<var>class</var>/<dfn>function</dfn>/<samp>ID</samp></code>
73
74<ol>
75<li>The first segment represents the controller <strong>class</strong> that should be invoked.</li>
76<li>The second segment represents the class <strong>function</strong>, or method, that should be called.</li>
Derek Allardce66d152008-03-04 20:55:55 +0000[diff] [blame]77<li>The third, and any additional segments, represent the ID and any variables that will be passed to the controller.</li>
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]78</ol>
79
admine334c472006-10-21 19:44:22 +0000[diff] [blame]80<p>The <a href="../libraries/uri.html">URI Class</a> and the <a href="../helpers/url_helper.html">URL Helper</a>
81contain functions that make it easy to work with your URI data. In addition, your URLs can be remapped using the
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]82<a href="routing.html">URI Routing</a> feature for more flexibility.</p>
83
84
85
86<h2>Removing the index.php file</h2>
87
Derek Allardc6441282007-07-04 23:54:32 +0000[diff] [blame]88<p>By default, the <strong>index.php</strong> file will be included in your URLs:</p>
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]89
90<code>www.your-site.com/<var>index.php</var>/news/article/my_article</code>
91
92<p>You can easily remove this file by using a .htaccess file with some simple rules. Here is an example
93 of such a file, using the "negative" method in which everything is redirected except the specified items:</p>
94
95<code>RewriteEngine on<br />
96RewriteCond $1 !^(index\.php|images|robots\.txt)<br />
97RewriteRule ^(.*)$ /index.php/$1 [L]</code>
98
99<p>In the above example, any HTTP request other than those for index.php, images, and robots.txt is treated as
100a request for your index.php file.</p>
101
102
103<h2>Adding a URL Suffix</h2>
104
105<p>In your <dfn>config/config.php</dfn> file you can specify a suffix that will be added to all URLs generated
Derek Allardc6441282007-07-04 23:54:32 +0000[diff] [blame]106by CodeIgniter. For example, if a URL is this:</p>
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]107
108<code>www.your-site.com/index.php/products/view/shoes</code>
109
admine7e1dcd2006-10-21 18:04:01 +0000[diff] [blame]110<p>You can optionally add a suffix, like <kbd>.html</kbd>, making the page appear to be of a certain type:</p>
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]111
112<code>www.your-site.com/index.php/products/view/shoes.html</code>
113
114
115<h2>Enabling Query Strings</h2>
116
117<p>In some cases you might prefer to use query strings URLs:</p>
118
Derek Allardce66d152008-03-04 20:55:55 +0000[diff] [blame]119<code>index.php?c=products&amp;m=view&amp;id=345</code>
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]120
Derek Allardd2df9bc2007-04-15 17:41:17 +0000[diff] [blame]121<p>CodeIgniter optionally supports this capability, which can be enabled in your <dfn>application/config.php</dfn> file. If you
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]122open your config file you'll see these items:</p>
123
124<code>$config['enable_query_strings'] = FALSE;<br />
125$config['controller_trigger'] = 'c';<br />
126$config['function_trigger'] = 'm';</code>
127
128<p>If you change "enable_query_strings" to TRUE this feature will become active. Your controllers and functions will then
129be accessible using the "trigger" words you've set to invoke your controllers and methods:</p>
130
Derek Allardce66d152008-03-04 20:55:55 +0000[diff] [blame]131<code>index.php?c=controller&amp;m=method</code>
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]132
133<p class="important"><strong>Please note:</strong> If you are using query strings you will have to build your own URLs, rather than utilizing
admine334c472006-10-21 19:44:22 +0000[diff] [blame]134the URL helpers (and other helpers that generate URLs, like some of the form helpers) as these are designed to work with
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]135segment based URLs.</p>
136
137
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139<!-- END CONTENT -->
140
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Derek Allardee0a7f02008-05-08 13:59:27 +0000[diff] [blame]148Next Topic:&nbsp;&nbsp;<a href="reserved_names.html">Reserved Names</a></p>
Derek Jones07870432008-02-13 03:49:26 +0000[diff] [blame]149<p><a href="http://codeigniter.com">CodeIgniter</a> &nbsp;&middot;&nbsp; Copyright &#169; 2006-2008 &nbsp;&middot;&nbsp; <a href="http://ellislab.com/">Ellislab, Inc.</a></p>
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