<?php /** * This program 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; under version 2 * of the License (non-upgradable). * * This program 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * * Copyright (c) 2008-2010 (original work) Deutsche Institut für Internationale Pädagogische Forschung (under the project TAO-TRANSFER); * 2009-2012 (update and modification) Public Research Centre Henri Tudor (under the project TAO-SUSTAIN & TAO-DEV); * */ /** * Validator to verify the identifiers of the property indexes * * @access public * @author Joel Bout, <joel.bout@tudor.lu> * @package tao */ class tao_helpers_form_validators_IndexIdentifier extends tao_helpers_form_Validator { /** * evalute the identifier * * @access public * @author Joel Bout, <joel.bout@tudor.lu> * @param values * @return boolean */ public function evaluate($values) { //evaluate identifier, starts with letter, contains letters, numbers and _, ends with letter, number if (preg_match("/^[a-z]+[a-z_0-9]*$/", $values) === 1) { return true; } else { if (!$this->hasOption('message')) { $message = empty($values) ? __('The index identifier should not be empty') : __('"%s" is not a valid index identifier. It must start with a letter and contain letters, numbers or underscores only', $values) ; $this->setMessage($message); } } return false; } }