silverstripe-installer/mysite/code/Page.php

<?php

class Page extends SiteTree {
	
	public static $db = array(
	);
	
	public static $has_one = array(
	);
	
}

class Page_Controller extends ContentController {
	
	/**
	 * An array of actions that can be accessed via a request. Each array element should be an action name, and the
	 * permissions or conditions required to allow the user to access it.
	 *
	 * <code>
	 * array (
	 *     'action', // anyone can access this action
	 *     'action' => true, // same as above
	 *     'action' => 'ADMIN', // you must have ADMIN permissions to access this action
	 *     'action' => '->checkAction' // you can only access this action if $this->checkAction() returns true
	 * );
	 * </code>
	 *
	 * @var array
	 */
	public static $allowed_actions = array (
		'SearchForm'
	);
	
	public function init() {
		parent::init();

		// Note: you should use SS template require tags inside your templates 
		// instead of putting Requirements calls here.  However these are 
		// included so that our older themes still work
		Requirements::themedCSS("layout"); 
		Requirements::themedCSS("typography"); 
		Requirements::themedCSS("form"); 
	}
	
	/**
	 * Site search form 
	 */ 
	function SearchForm() {
		$searchText = isset($_REQUEST['Search']) ? $_REQUEST['Search'] : 'Search';
		$fields = new FieldSet(
	      	new TextField("Search", "", $searchText)
	  	);
		$actions = new FieldSet(
	      	new FormAction('results', 'Search')
	  	);

	  	return new SearchForm($this, "SearchForm", $fields, $actions);
	}
	
	/**
	 * Process and render search results
	 */
	function results($data, $form){
	  	$data = array(
	     	'Results' => $form->getResults(),
	     	'Query' => $form->getSearchQuery(),
	      	'Title' => 'Search Results'
	  	);

	  	return $this->customise($data)->renderWith(array('Page_results', 'Page'));
	}
	
}

?>