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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; under version 2 |
| 7 | * of the License (non-upgradable). |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 17 | * |
| 18 | * Copyright (c) 2020 (original work) (update and modification) Open Assessment Technologies SA |
| 19 | */ |
| 20 | |
| 21 | declare(strict_types=1); |
| 22 | |
| 23 | use oat\tao\helpers\form\validators\CrossElementEvaluationAware; |
| 24 | |
| 25 | class tao_helpers_form_validators_OneOf extends tao_helpers_form_Validator implements CrossElementEvaluationAware |
| 26 | { |
| 27 | /** @var tao_helpers_form_FormElement[]|[] */ |
| 28 | private $references = []; |
| 29 | |
| 30 | /** |
| 31 | * @throws common_Exception |
| 32 | * @throws common_exception_Error |
| 33 | */ |
| 34 | public function setOptions(array $options) |
| 35 | { |
| 36 | parent::setOptions($options); |
| 37 | |
| 38 | if (!$this->hasOption('reference')) { |
| 39 | throw new common_Exception(sprintf("No reference provided for %s validator", $this->getName())); |
| 40 | } |
| 41 | } |
| 42 | |
| 43 | public function evaluate($values) |
| 44 | { |
| 45 | $isEmpty = [empty($values)]; |
| 46 | foreach ($this->references as $reference) { |
| 47 | $isEmpty[] = empty($reference->getRawValue()); |
| 48 | } |
| 49 | return count(array_filter($isEmpty)) === 1; |
| 50 | } |
| 51 | |
| 52 | public function acknowledge(tao_helpers_form_Form $form): void |
| 53 | { |
| 54 | $message = []; |
| 55 | foreach ($this->getOption('reference', []) as $ref) { |
| 56 | $ref = $ref instanceof tao_helpers_form_FormElement ? $ref : $form->getElement( |
| 57 | tao_helpers_Uri::encode($ref) |
| 58 | ); |
| 59 | |
| 60 | $this->references[] = $ref; |
| 61 | $message[] = $ref->getDescription(); |
| 62 | } |
| 63 | |
| 64 | $this->setMessage(__('Only one of the field must have value %s', implode(',', $message))); |
| 65 | } |
| 66 | } |