Converting all created & modified fields date to BR format in CakePHP for all models

AppModel.php

<?php
/**
 * Application model for Cake.
 *
 * This file is application-wide model file. You can put all
 * application-wide model-related methods here.
 *
 * PHP 5
 *
 * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
 * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
 *
 * Licensed under The MIT License
 * For full copyright and license information, please see the LICENSE.txt
 * Redistributions of files must retain the above copyright notice.
 *
 * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
 * @link          http://cakephp.org CakePHP(tm) Project
 * @package       app.Model
 * @since         CakePHP(tm) v 0.2.9
 * @license       http://www.opensource.org/licenses/mit-license.php MIT License
 */

App::uses('Model', 'Model');

/**
 * Application model for Cake.
 *
 * Add your application-wide methods in the class below, your models
 * will inherit them.
 *
 * @package       app.Model
 */

App::uses('CakeTime', 'Utility');
class AppModel extends Model
{

    public function afterFind($results, $primary = false) {
        foreach ($results as $key => $val) {
            $model = key($val);
            if(!empty($val[$model]['created'])){
                $results[$key][$model]['created'] = $this->dateFormatAfterFind(
                  $val[$model]['created']
                );
            }

            if(!empty($val[$model]['modified'])){
                $results[$key][$model]['modified'] = $this->dateFormatAfterFind(
                  $val[$model]['modified']
                );
            }
        }

        return $results;
    }

    public function dateFormatAfterFind($dateString) {
        return CakeTime::format($dateString, '%d/%m/%Y %H:%M');
    }
}