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| <h1>Model-View-Controller</h1> |
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| <p>CodeIgniter is based on the Model-View-Controller development pattern. |
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| 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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| <li>The <strong>Model</strong> represents your data structures. Typically your model classes will contain functions that help you |
| retrieve, insert, and update information in 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 CodeIgniter, 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> |
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| </ul> |
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| <p>CodeIgniter 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. CodeIgniter 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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