Implode ViewHelper for Fluid #TYPO3

<?php
/***************************************************************
*  Copyright notice
*
*  (c) 2011 Alex Kellner <alexander.kellner@in2code.de>, in2code.de
*
*  All rights reserved
*
*  This script is part of the TYPO3 project. The TYPO3 project is
*  free software; you can redistribute it and/or modify
*  it under the terms of the GNU General Public License as published by
*  the Free Software Foundation; either version 3 of the License, or
*  (at your option) any later version.
*
*  The GNU General Public License can be found at
*  http://www.gnu.org/copyleft/gpl.html.
*
*  This script is distributed in the hope that it will be useful,
*  but WITHOUT ANY WARRANTY; without even the implied warranty of
*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*  GNU General Public License for more details.
*
*  This copyright notice MUST APPEAR in all copies of the script!
***************************************************************/

/**
 * This class contains some usefull viewhelpers
 *
 * @package TYPO3
 * @subpackage Fluid
 * @version
 */
class Tx_In2university_ViewHelpers_ImplodeViewHelper extends Tx_Fluid_Core_ViewHelper_AbstractViewHelper {

    /**
     * Generates list from array
     *
     * @param   array       Any Object with some objects for an Implode
     * @param   string      Field name - title for getTitle()
     * @param   string      Glue sign - like ", "
     * @return  string      Imploded List
     */
    public function render($array, $field, $glue) {
        $string = '';
        foreach ($array as $object) {
            $string .= $object->{'get' . ucfirst($field)}();
            $string .= $glue;
        }
        return substr($string, 0, (-1 * strlen($glue)));
    }
}

?>