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| 35 | <tr>
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| admin | 9fc347d | 2006-09-21 00:00:28 +0000 | [diff] [blame] | 36 | <td><h1>Code Igniter User Guide Version 1.4.1</h1></td>
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| admin | b0dd10f | 2006-08-25 17:25:49 +0000 | [diff] [blame] | 37 | <td id="breadcrumb_right"><a href="../toc.html">Full Table of Contents</a></td>
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| 46 | <tr>
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| 47 | <td id="breadcrumb">
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| 48 | <a href="http://www.codeigniter.com/">Code Igniter Home</a> ›
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| 49 | <a href="../index.html">User Guide Home</a> ›
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| 50 | MVC
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| 51 | </td>
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| 52 | <td id="searchbox"><form method="get" action="http://www.google.com/search"><input type="hidden" name="as_sitesearch" id="as_sitesearch" value="www.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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| 60 | <!-- START CONTENT -->
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| 61 | <div id="content">
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| 62 |
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| 63 |
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| 64 | <h1>Model-View-Controller</h1>
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| 65 |
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| 66 | <p>Code Igniter is based on the Model-View-Controller development pattern.
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| 67 |
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| 68 | MVC is a software approach that separates application logic from presentation. In practice, it permits your web pages to contain minimal scripting since the presentation is separate from the PHP scripting.</p>
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| 69 |
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| 70 | <ul>
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| 71 | <li>The <strong>Model</strong> represents your data structures. Typically your model classes will contains functions that help you
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| 72 | retrieve, insert, and update information in your your database.</li>
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| 73 | <li>The <strong>View</strong> is the information that is being presented to a user. A View will normally be a web page, but
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| admin | 25f6fca | 2006-09-23 01:23:14 +0000 | [diff] [blame^] | 74 | in Code Igniter, a view can also be a page fragment like a header or footer. It can also be an RSS page, or any other type of "page".</li>
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| admin | b0dd10f | 2006-08-25 17:25:49 +0000 | [diff] [blame] | 75 | <li>The <strong>Controller</strong> serves as an <em>intermediary</em> between the Model, the View,
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| 76 | and any other resources needed to process the HTTP request and generate a web page.</li>
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| 77 |
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| 78 | </ul>
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| 79 |
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| 80 | <p>Code Igniter has a fairly loose approach to MVC since Models are not required.
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| 81 | If you don't need the added separation, or find that maintaining models requires more complexity than you
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| 82 | want, you can ignore them and build your application minimally using Controllers and Views. Code Igniter also
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| 83 | enables you to incorporate your own existing scripts, or even develop core libraries for the system,
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| 84 | enabling you to work in a way that makes the most sense to you.</p>
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| 85 |
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| 89 | </div>
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| 90 | <!-- END CONTENT -->
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| 91 |
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| 92 |
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| 93 | <div id="footer">
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| 94 | <p>
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| 95 | Previous Topic: <a href="appflow.html">Application Flow Chart</a>
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| 96 | ·
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| 97 | <a href="#top">Top of Page</a> ·
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| 98 | <a href="../index.html">User Guide Home</a> ·
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| 99 | Next Topic: <a href="goals.html">Architectural Goals</a>
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| 100 | <p>
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| 101 | <p><a href="http://www.codeigniter.com">Code Igniter</a> · Copyright © 2006 · <a href="http://www.pmachine.com">pMachine, Inc.</a></p>
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