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| <td><h1>Code Igniter User Guide Version 1.5.0b3</h1></td> | |
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| MVC | |
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| <h1>Model-View-Controller</h1> | |
| <p>Code Igniter is based on the Model-View-Controller development pattern. | |
| 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> | |
| <ul> | |
| <li>The <strong>Model</strong> represents your data structures. Typically your model classes will contains functions that help you | |
| retrieve, insert, and update information in your your database.</li> | |
| <li>The <strong>View</strong> is the information that is being presented to a user. A View will normally be a web page, but | |
| 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> | |
| <li>The <strong>Controller</strong> serves as an <em>intermediary</em> between the Model, the View, | |
| and any other resources needed to process the HTTP request and generate a web page.</li> | |
| </ul> | |
| <p>Code Igniter has a fairly loose approach to MVC since Models are not required. | |
| If you don't need the added separation, or find that maintaining models requires more complexity than you | |
| want, you can ignore them and build your application minimally using Controllers and Views. Code Igniter also | |
| enables you to incorporate your own existing scripts, or even develop core libraries for the system, | |
| enabling you to work in a way that makes the most sense to you.</p> | |
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