Welcome to the Cookbook

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Controllers, helpers and models each have a parent class you can use to define application-wide changes. AppController (located at /app/app_controller.php), AppHelper (located at /app/app_helper.php) and AppModel (located at /app/app_model.php) are great places to put methods you want to share between all controllers, helpers or models.

Although they aren’t classes or files, routes play a role in requests made to CakePHP. Route definitions tell CakePHP how to map URLs to controller actions. The default behavior assumes that the URL “/controller/action/var1/var2” maps to Controller::action($var1, $var2), but you can use routes to customize URLs and how they are interpreted by your application.

Some features in an application merit packaging as a whole. A plugin is a package of models, controllers and views that accomplishes a specific purpose that can span multiple applications. A user management system or a simplified blog might be a good fit for CakePHP plugins.