Контроллер

Поскольку для добавления/удаления закладок нам понадобиться отправлять запросы при помощи AJAX, создадим контроллер, который к тому же будет отображать закладки пользователя.

<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
 * CoGear
 *
 * Content management system based on CodeIgniter
 *
 * @package		CoGear
 * @author		CodeMotion, Dmitriy Belyaev
 * @copyright		Copyright © 2009, CodeMotion
 * @license		http://cogear.ru/license.html
 * @link		http://cogear.ru
 * @since		Version 1.0
 * @filesource
 */
// ------------------------------------------------------------------------
/**
 * Favorites controller
 *
 * @package	CoGear
 * @subpackage	Favorites
 * @category	Gears controllers
 * @author	CodeMotion, Dmitriy Belyaev
 * @link	http://cogear.ru/user_guide/
 */
class Index extends Controller{
	/**
	* Constructor
	*
	* @return	void
	*/
	function __construct(){
		parent::Controller();
	}
	// ------------------------------------------------------------------------
	/**
	* Show user favorite nodes
	*
	* @param	string    $url_name
	* @param	int       $page
	* @return	void
	*/
	function index($url_name, $page = 0){
                // If user exists
		if($url_name && $user = $this->user->info($url_name)){
                        // Show user profile main info
			$this->user->head($user,'favorites');
                        // Check for acl to view unpublished items
			if(acl('blogs allow_view_unpublished') OR $user->id == $this->user->get('id')){
				$this->nodes->published = FALSE;
			}
                        // Add active record condition
			$this->db->where(array('favorites.uid'=>$user->id));
                        // Show list of nodes with pagination
			$this->nodes->get($page,FALSE,TRUE);
		}
		else return _404();
	}
	// ------------------------------------------------------------------------
	/**
	* Add/remove node to user favorites via ajax
	*
	* @return	json
	*/
	function action(){
                // Set i18n department
		d('favorites');
                // Get POST variables
		$nid = $this->input->post('nid');
		$action = $this->input->post('action');
                // Check for request
		if(!$nid OR !$action) ajax(FALSE);
                // Get current user id
		$uid = $this->user->get('id');
                // Switch action
		switch($action){
			case 'add':
				if($this->db->get_where('favorites',array('nid'=>$nid,'uid'=>$uid))->row()){
					ajax(FALSE);
				}
				if($this->db->insert('favorites',array('nid'=>$nid,'uid'=>$uid))){
					ajax(TRUE,t('add_success'));
				}
			break;
			case 'remove':
				if($this->db->delete('favorites',array('nid'=>$nid,'uid'=>$uid))){
					ajax(TRUE,t('remove_success'));
				}
			break;
		}
                // If no switch option matches return false
		ajax(FALSE);
	}
	// ------------------------------------------------------------------------
}
// ------------------------------------------------------------------------