FormConditionFunctionsProvider.php

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<?php
 
declare(strict_types=1);
 
/*
 * This file is part of the TYPO3 CMS project.
 *
 * It is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, either version 2
 * of the License, or any later version.
 *
 * For the full copyright and license information, please read the
 * LICENSE.txt file that was distributed with this source code.
 *
 * The TYPO3 project - inspiring people to share!
 */
 
namespace ‪TYPO3\CMS\Form\Domain\Condition\Functions;
 
use Symfony\Component\ExpressionLanguage\ExpressionFunction;
use Symfony\Component\ExpressionLanguage\ExpressionFunctionProviderInterface;
use ‪TYPO3\CMS\Extbase\Reflection\ObjectAccess;
 
class ‪FormConditionFunctionsProvider implements ExpressionFunctionProviderInterface
{
    public function ‪getFunctions(): array
    {
        return [
            $this->‪getFormValueFunction(),
            $this->‪getRootFormPropertyFunction(),
        ];
    }
 
    protected function ‪getFormValueFunction(): ExpressionFunction
    {
        return new ExpressionFunction(
            'getFormValue',
            static fn() => null, // Not implemented, we only use the evaluator
            static function ($arguments, $field, $default = null) {
                return $arguments['formValues'][$field] ?? $default;
            }
        );
    }
 
    protected function ‪getRootFormPropertyFunction(): ExpressionFunction
    {
        return new ExpressionFunction(
            'getRootFormProperty',
            static fn() => null, // Not implemented, we only use the evaluator
            static function ($arguments, $property) {
                $formDefinition = $arguments['formRuntime']->getFormDefinition();
                try {
                    $value = ‪ObjectAccess::getPropertyPath($formDefinition, $property);
                } catch (\‪Exception) {
                    $value = null;
                }
                return $value;
            }
        );
    }
}