gistfile1.php

<?php defined('SYSPATH') OR die('No direct access allowed.');
/**
 * User controller.
 *
 * @package    wd
 * @author     Alvaro Guimaraes
 * @copyright  (c) 2009 Alvaro Guimaraes
 * @license    http://kohanaphp.com/license.html
 */

class User_Controller extends Template_Controller {
	
	private $auth;
	public $template = 'template/base';
	
	public function __construct(){
		parent::__construct();
		
		$this->auth = Auth::instance();
		$this->session = Session::instance();
		$this->template->title = 'User';
		
		if ( $this->auth->logged_in()){
			$this->template->username = $this->auth->get_user()->username;
		}
		
	}

        /**
	 * Check if field already exists
	 *
	 * @param   Validation
	 * @param	string field
	 * @return  void
	 */
	private function _field_exists(Validation $array, $field){
		$exists = (bool) ORM::factory('user')->where($field, $array[$field])->count_all();
		if ($exists) {
			$array->add_error($field, 'already exists');
		}
	}
	
	/**
	 * Check if user data is valid
	 *
	 * @param   array field => value
	 * @return  mixed
	 */
	private function _user_data_is_valid(array $data) {
		
		$valid_obj = new Validation($data);
		
		//trim all fields
		$valid_obj->pre_filter('trim', TRUE);

		// add rules
		$valid_obj->add_rules('username', 'required');
		$valid_obj->add_rules('password', 'required');
		$valid_obj->add_rules('confirm_password', 'matches[password]');
		$valid_obj->add_rules('email', 'required', 'email');
		
		//add callback for unique e-mail and username
		$valid_obj->add_callbacks('username', array($this, '_field_exists'));
		$valid_obj->add_callbacks('email', array($this, '_field_exists'));
		
		
		if ($valid_obj->validate()){
			return TRUE;
		} else {
			return $valid_obj->errors();
		}
		
		
		
		
	}