UploadViewHelper.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\Fluid\ViewHelpers\Form;
 
final class ‪UploadViewHelper extends ‪AbstractFormFieldViewHelper
{
    protected ‪$tagName = 'input';
 
    public function ‪initializeArguments(): void
    {
        parent::initializeArguments();
        $this->registerTagAttribute('disabled', 'string', 'Specifies that the input element should be disabled when the page loads');
        $this->registerTagAttribute('multiple', 'string', 'Specifies that the file input element should allow multiple selection of files');
        $this->registerTagAttribute('accept', 'string', 'Specifies the allowed file extensions to upload via comma-separated list, example ".png,.gif"');
        $this->registerArgument('errorClass', 'string', 'CSS class to set if there are errors for this ViewHelper', false, 'f3-form-error');
        $this->registerUniversalTagAttributes();
    }
 
    public function ‪render(): string
    {
        $name = $this->‪getName();
        $allowedFields = ['name', 'type', 'tmp_name', 'error', 'size'];
        foreach ($allowedFields as $fieldName) {
            $this->‪registerFieldNameForFormTokenGeneration($name . '[' . $fieldName . ']');
        }
        $this->tag->addAttribute('type', 'file');
 
        if (isset($this->arguments['multiple'])) {
            $this->tag->addAttribute('name', $name . '[]');
        } else {
            $this->tag->addAttribute('name', $name);
        }
 
        $this->‪setErrorClassAttribute();
        return $this->tag->render();
    }
}