[TYPO3-mvc] Adding multiple files to a Model

[Andy Pattynama]

I'm currently migrating an existing 4.5 installation to 6.1 and I need to import some old data. For that matter, I created a new Extbase extension with an ImportController and so far, I have no problems in importing normal text fields. But now, I'm stuck with handling importing images.

For creating the TCA, etc., I followed http://buzz.typo3.org/teams/extbase/article/fal-and-extbase-the-easy-part/ 

My code [1] is attached below. The images get imported into sys_file and are also selectable, when I try to add the images through the backend. The problem is, I can't add references to those files from my ImportController.

What I don't understand is: How can the property pictures have an \TYPO3\CMS\Extbase\Persistence\ObjectStorage<\TYPO3\CMS\Extbase\Domain\Model\FileReference>
when all I have is a File? The FileReference should be created, when I attach the ObjectStorage to the property pictures, no? Basically, the problem I'm having is: How can I attach multiple files to a property.

Any help is appreciated.


1:
Model/Promotion.php

class Promotion extends \TYPO3\CMS\Extbase\DomainObject\AbstractEntity {
/**
	 * pictures
	 *
     * @var \TYPO3\CMS\Extbase\Persistence\ObjectStorage<\TYPO3\CMS\Extbase\Domain\Model\FileReference>
     * @lazy
	 */
	protected $pictures;

**
	 * __construct
	 *
	 * @return Promotion
	 */
	public function __construct() {
		//Do not remove the next line: It would break the functionality
		$this->initStorageObjects();
        $this->pictures = new \TYPO3\CMS\Extbase\Persistence\ObjectStorage();

	}
/**
	 * Returns the pictures
	 *
	 * @return \TYPO3\CMS\Extbase\Persistence\ObjectStorage
	 */
	public function getPictures() {
		return $this->pictures;
	}

	/**
	 * Sets the pictures
	 *
	 * @param \TYPO3\CMS\Extbase\Persistence\ObjectStorage $pictures
     * @return void
	 *
	 */
	public function setPictures($pictures) {
		$this->pictures = $pictures;
	}



TCA/Promotion.php:

$TCA['extension_model']['columns']['pictures']['config'] = \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::getFileFieldTCAConfig('pictures');



Controller/ImportController.php:

protected function importPromotion($promotion) {
$this->promotionRepository = GeneralUtility::makeInstance('Vendor\\Extension\\Domain\\Repository\\PromotionRepository');
$pictures = $this->getPromotionPictures(explode(",", $promotion["bilder"]));
$promotionRecord->setPictures($pictures);
$this->promotionRepository->add($promotionRecord);
}

 protected function getPromotionPictures($pictures) {

        $storageRepository = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\Resource\\StorageRepository');
        $storage = $storageRepository->findByUid(1);
        $objectStorage = GeneralUtility::makeInstance('TYPO3\\CMS\\Extbase\\Persistence\\ObjectStorage');

        foreach($pictures as $picture) {
            if(strlen($picture)>0) {
                $oldFile = $_SERVER['DOCUMENT_ROOT'].'typo3temp/mypath/'.$picture;
                $newFile = 'content/shared/'.$picture;
                $newFolder = 'content/shared/';
                if($storage->hasFile($newFile)) {
                    $fileObject = $storage->getFile($newFile);
                } else {
                    $fileObject = $storage->addFile($oldFile, $storage->getFolder($newFolder), $picture);
                }
                $objectStorage->attach($fileObject);
            }
        }
        return $objectStorage;
    }