84 lines
2.7 KiB
PHP
84 lines
2.7 KiB
PHP
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<?php
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/**
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; under version 2
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* of the License (non-upgradable).
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright (c) 2008-2010 (original work) Deutsche Institut für Internationale Pädagogische Forschung (under the project TAO-TRANSFER);
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* 2009-2012 (update and modification) Public Research Centre Henri Tudor (under the project TAO-SUSTAIN & TAO-DEV);
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*
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*/
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/**
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* Validator to ensure a property value is unique
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*
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* @access public
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* @author Joel Bout, <joel@taotesting.com>
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* @package tao
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*/
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class tao_helpers_form_validators_Unique extends tao_helpers_form_Validator
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{
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private $property;
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/**
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* (non-PHPdoc)
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* @see tao_helpers_form_Validator::getDefaultMessage()
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*/
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protected function getDefaultMessage()
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{
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return __('The value for the property "%s" must be unique.', $this->getProperty()->getLabel());
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}
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public function setOptions(array $options)
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{
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unset($this->property);
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parent::setOptions($options);
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}
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/**
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* @return core_kernel_classes_Property
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* @throws common_exception_Error
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*/
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protected function getProperty()
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{
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if (!isset($this->property) || empty($this->property)) {
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if (!$this->hasOption('property')) {
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throw new common_exception_Error('Property not set');
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}
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$this->property = ($this->getOption('property') instanceof core_kernel_classes_Property)
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? $this->getOption('property')
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: new core_kernel_classes_Property($this->getOption('property'));
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}
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return $this->property;
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}
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/**
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* (non-PHPdoc)
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* @see tao_helpers_form_Validator::evaluate()
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*/
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public function evaluate($values)
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{
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$domain = $this->getProperty()->getDomain();
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foreach ($domain as $class) {
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$resources = $class->searchInstances([$this->getProperty()->getUri() => $values], ['recursive' => true, 'like' => false]);
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if (count($resources) > 0) {
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return false;
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}
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}
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return true;
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}
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}
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