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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 TYPO3\CMS\Extbase\DomainObject\AbstractDomainObject;
use TYPO3\CMS\Extbase\Persistence\Generic\LazyLoadingProxy;
use TYPO3\CMS\Extbase\Persistence\PersistenceManagerInterface;
use TYPO3\CMS\Fluid\ViewHelpers\FormViewHelper;
use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractTagBasedViewHelper;
/**
* Abstract Form ViewHelper. Bundles functionality related to direct property access of objects in other Form ViewHelpers.
*
* If you set the "property" attribute to the name of the property to resolve from the object, this class will
* automatically set the name and value of a form element.
*
* Note this set of ViewHelpers is tailored to be used only in extbase context.
*/
abstract class AbstractFormViewHelper extends AbstractTagBasedViewHelper
{
protected PersistenceManagerInterface $persistenceManager;
public function injectPersistenceManager(PersistenceManagerInterface $persistenceManager): void
{
$this->persistenceManager = $persistenceManager;
}
/**
* Prefixes / namespaces the given name with the form field prefix
*/
protected function prefixFieldName(string $fieldName): string
{
if ($fieldName === '') {
return '';
}
$viewHelperVariableContainer = $this->renderingContext->getViewHelperVariableContainer();
if (!$viewHelperVariableContainer->exists(FormViewHelper::class, 'fieldNamePrefix')) {
return $fieldName;
}
$fieldNamePrefix = (string)$viewHelperVariableContainer->get(FormViewHelper::class, 'fieldNamePrefix');
if ($fieldNamePrefix === '') {
return $fieldName;
}
$fieldNameSegments = explode('[', $fieldName, 2);
$fieldName = $fieldNamePrefix . '[' . $fieldNameSegments[0] . ']';
if (count($fieldNameSegments) > 1) {
$fieldName .= '[' . $fieldNameSegments[1];
}
return $fieldName;
}
/**
* Renders a hidden form field containing the technical identity of the given object.
*
* @param object|null $object Object to create the identity field for
* @param string|null $name Name
* @return string A hidden field containing the Identity (uid) of the given object
* @see \TYPO3\CMS\Extbase\Mvc\Controller\Argument::setValue()
*/
protected function renderHiddenIdentityField(?object $object, ?string $name): string
{
if ($object instanceof LazyLoadingProxy) {
$object = $object->_loadRealInstance();
}
if (!is_object($object)
|| !($object instanceof AbstractDomainObject)
|| ($object->_isNew() && !$object->_isClone())) {
return '';
}
// Intentionally NOT using PersistenceManager::getIdentifierByObject here.
// Using that one breaks re-submission of data in forms in case of an error.
$identifier = $object->getUid();
if ($identifier === null) {
return LF . '<!-- Object of type ' . get_class($object) . ' is without identity -->' . LF;
}
$name = $this->prefixFieldName($name ?? '') . '[__identity]';
$this->registerFieldNameForFormTokenGeneration($name);
return LF . '<input type="hidden" name="' . htmlspecialchars($name) . '" value="' . htmlspecialchars((string)$identifier) . '" />' . LF;
}
/**
* Register a field name for inclusion in the HMAC / Form Token generation
*/
protected function registerFieldNameForFormTokenGeneration(string $fieldName): void
{
$viewHelperVariableContainer = $this->renderingContext->getViewHelperVariableContainer();
if ($viewHelperVariableContainer->exists(FormViewHelper::class, 'formFieldNames')) {
$formFieldNames = $viewHelperVariableContainer->get(FormViewHelper::class, 'formFieldNames');
} else {
$formFieldNames = [];
}
$formFieldNames[] = $fieldName;
$viewHelperVariableContainer->addOrUpdate(FormViewHelper::class, 'formFieldNames', $formFieldNames);
}
}