Missing Method in ExhibitsController

Error: The action view_cat is not defined in controller ExhibitsController

Error: Create ExhibitsController::view_cat() in file: app/controllers/exhibits_controller.php.

<?php
class ExhibitsController extends AppController {

	var $name = 'Exhibits';


	function view_cat() {

	}

}
?>

Notice: If you want to customize this error message, create app/views/errors/missing_action.ctp.