TYPO3 v15 dev-main snapshot ()

2026-08-10 22:31:20 +02:00
commit c7a46689ff
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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\Fluid\ViewHelpers\Form;
+
+use Psr\Http\Message\ServerRequestInterface;
+use TYPO3\CMS\Extbase\Mvc\RequestInterface;
+use TYPO3Fluid\Fluid\Core\Variables\ScopedVariableProvider;
+use TYPO3Fluid\Fluid\Core\Variables\StandardVariableProvider;
+use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;
+
+/**
+ * ViewHelper which renders form validation results.
+ *
+ * ```
+ *   <f:form.validationResults>
+ *     <f:if condition="{validationResults.flattenedErrors}">
+ *       <ul>
+ *         <f:for each="{validationResults.flattenedErrors}" as="errors" key="propertyPath">
+ *           <li>{propertyPath}
+ *             <ul>
+ *               <f:for each="{errors}" as="error">
+ *                 <li>{error.code}: {error}</li>
+ *               </f:for>
+ *             </ul>
+ *           </li>
+ *         </f:for>
+ *       </ul>
+ *     </f:if>
+ *   </f:form.validationResults>
+ *
+ *   <f:form.validationResults for="someProperty">
+ *     <f:for each="{validationResults.flattenedErrors}" as="errors" key="propertyPath">
+ *       <f:for each="{errors}" as="error">
+ *           <p data-property-path="{propertyPath}">{error.code}: {error}</p>
+ *       </f:for>
+ *     </f:for>
+ *   </f:form.validationResults>
+ * ```
+ *
+ * @see https://docs.typo3.org/permalink/t3viewhelper:typo3-fluid-form-validationresults
+ */
+final class ValidationResultsViewHelper extends AbstractViewHelper
+{
+    /**
+     * As this ViewHelper renders HTML, the output must not be escaped.
+     *
+     * @var bool
+     */
+    protected $escapeOutput = false;
+
+    public function initializeArguments(): void
+    {
+        $this->registerArgument('for', 'string', 'The name of the error name (e.g. argument name or property name). This can also be a property path (like blog.title), and will then only display the validation errors of that property.', false, '');
+        $this->registerArgument('as', 'string', 'The name of the variable to store the current error', false, 'validationResults');
+    }
+
+    public function render(): string
+    {
+        $for = $this->arguments['for'];
+        $as = $this->arguments['as'];
+        if (!$this->renderingContext->hasAttribute(ServerRequestInterface::class)
+            || !$this->renderingContext->getAttribute(ServerRequestInterface::class) instanceof RequestInterface
+        ) {
+            throw new \RuntimeException('ValidationResultsViewHelper needs an extbase request to work.', 1724244193);
+        }
+        $extbaseRequestParameters = $this->renderingContext->getAttribute(ServerRequestInterface::class)->getAttribute('extbase');
+        $validationResults = $extbaseRequestParameters->getOriginalRequestMappingResults();
+        if ($validationResults !== null && $for !== '') {
+            $validationResults = $validationResults->forProperty($for);
+        }
+        $variableProvider = new ScopedVariableProvider($this->renderingContext->getVariableProvider(), new StandardVariableProvider([$as => $validationResults]));
+        $this->renderingContext->setVariableProvider($variableProvider);
+        $output = (string)$this->renderChildren();
+        $this->renderingContext->setVariableProvider($variableProvider->getGlobalVariableProvider());
+        return $output;
+    }
+}