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| <td><h1>Code Igniter User Guide Version 1.4.0</h1></td> | |
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| <h1>Code Igniter URLs</h1> | |
| <p>By default, URLs in Code Igniter are designed to be search-engine and human friendly. Rather than using the standard "query string" | |
| approach to URLs that is synonymous with dynamic systems, Code Igniter uses a <strong>segment-based</strong> approach:</p> | |
| <code>www.your-site.com/<var>news</var>/<dfn>article</dfn>/<samp>my_article</samp></code> | |
| <p class="important"><strong>Note:</strong> Query string URLs can be optionally enabled, as described below.</p> | |
| <h2>URI Segments</h2> | |
| <p>The segments in the URL, in following with the Model-View-Controller approach, usually represent:</p> | |
| <code>www.your-site.com/<var>class</var>/<dfn>function</dfn>/<samp>ID</samp></code> | |
| <ol> | |
| <li>The first segment represents the controller <strong>class</strong> that should be invoked.</li> | |
| <li>The second segment represents the class <strong>function</strong>, or method, that should be called.</li> | |
| <li>The third, and any additional segments, represent the ID and any variables that will be passed to the controller.</p> | |
| </ol> | |
| <p>The <a href="../libraries/uri.html">URI Class</a> and the <a href="../helpers/url_helper.html">URL Helper</a> | |
| contain functions that make it easy to work with your URI data. In addition, your URLs can be remapped using the | |
| <a href="routing.html">URI Routing</a> feature for more flexibility.</p> | |
| <h2>Removing the index.php file</h2> | |
| <p>By default, the <strong>index.php</strong> file will be included in your URLs: | |
| <code>www.your-site.com/<var>index.php</var>/news/article/my_article</code> | |
| <p>You can easily remove this file by using a .htaccess file with some simple rules. Here is an example | |
| of such a file, using the "negative" method in which everything is redirected except the specified items:</p> | |
| <code>RewriteEngine on<br /> | |
| RewriteCond $1 !^(index\.php|images|robots\.txt)<br /> | |
| RewriteRule ^(.*)$ /index.php/$1 [L]</code> | |
| <p>In the above example, any HTTP request other than those for index.php, images, and robots.txt is treated as | |
| a request for your index.php file.</p> | |
| <h2>Adding a URL Suffix</h2> | |
| <p>In your <dfn>config/config.php</dfn> file you can specify a suffix that will be added to all URLs generated | |
| by Code Igniter. For example, if a URL is this: | |
| <code>www.your-site.com/index.php/products/view/shoes</code> | |
| <p>You can optionaally add a suffix, like <kbd>.html</kbd>, making the page appear to be of a certain type:</p> | |
| <code>www.your-site.com/index.php/products/view/shoes.html</code> | |
| <h2>Enabling Query Strings</h2> | |
| <p>In some cases you might prefer to use query strings URLs:</p> | |
| <code>index.php?c=products&m=view&id=345</code> | |
| <p>Code Igniter optionally supports this capability, which can be enabled in your <dfn>application/config.php</dfn> file. If you | |
| open your config file you'll see these items:</p> | |
| <code>$config['enable_query_strings'] = FALSE;<br /> | |
| $config['controller_trigger'] = 'c';<br /> | |
| $config['function_trigger'] = 'm';</code> | |
| <p>If you change "enable_query_strings" to TRUE this feature will become active. Your controllers and functions will then | |
| be accessible using the "trigger" words you've set to invoke your controllers and methods:</p> | |
| <code>index.php?c=controller&m=method</code> | |
| <p class="important"><strong>Please note:</strong> If you are using query strings you will have to build your own URLs, rather than utilizing | |
| the URL helpers (and other helpers that generate URLs, like some of the form helpers) as these are designed to work with | |
| segment based URLs.</p> | |
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