How to update images stored as strings in extbase? - typo3

Question

I have recently created an extension that has a file upload feature. I decided to store it as a string. I have used it like this:
In the controller:
public function initializeAction() {
if ($this->arguments->hasArgument('blog')) {
$this->arguments->getArgument('blog')->getPropertyMappingConfiguration()->setTargetTypeForSubProperty('image', 'array');
}
}
In the model:
/**
* Returns the image
*
* #return string $image
*/
public function getImage()
{
return $this->image;
}
/**
* Sets the image
*
* #param \array $image
* #return void
*/
public function setImage(array $image)
{
die(debug::var_dump($image));
if (!empty($image['name']))
{
$imageName = $image['name'];
$imageTempName = $image['tmp_name'];
$basicFileUtility = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\Utility\\File\\BasicFileUtility');
$imageNameNew = $basicFileUtility->getUniqueName($imageName, \TYPO3\CMS\Core\Utility\GeneralUtility::getFileAbsFileName('uploads/tx_myextension/'));
\TYPO3\CMS\Core\Utility\GeneralUtility::upload_copy_move($imageTempName, $imageNameNew);
$this->image = basename($imageNameNew);
}
}
The TCA:
'config' => [
'type' => 'group',
'internal_type' => 'file',
'uploadfolder' => 'uploads/tx_myextension',
'show_thumbs' => 1,
'size' => 1,
'allowed' => $GLOBALS['TYPO3_CONF_VARS']['GFX']['imagefile_ext'],
'disallowed' => ''
],
In my form:
<f:form action="update" name="blog" object="{blog}" >
<f:form.upload property="image" class="form-control" />
...
Now this works perfectly when a new object is created, however when I try to change this image (using updateAction), I get the this error message:
Exception while property mapping at property path "image":
No converter found which can be used to convert from "string" to "array".
I would like to avoid uploading via FAL or writing my own conversion. I'm hoping that I just missed something trivial.

Answer 1

Take an look to an update script from tt_address to see how to make an update.
To make it short: You must read all entries of your files and move them from upload dir to your file storage and then you must add an file_reference which connect the sys_file with your domain model:
GeneralUtility::upload_copy_move(
PATH_site . 'uploads/tx_myextension/' . $imageName,
PATH_site . 'fileadmin/tx_myextension/' . $imageName);
$fileObject = $this->storage->getFile('fileadmin/tx_myextension/' . $imageName);
if ($fileObject instanceof \TYPO3\CMS\Core\Resource\File) {
$this->fileRepository->add($fileObject);
$dataArray = [
'uid_local' => $fileObject->getUid(),
'tablenames' => 'tx_your_domain_model',
'fieldname' => 'image',
'uid_foreign' => 'your model uid',
'table_local' => 'sys_file',
'cruser_id' => 999,
'pid' => 'your_model_pid',
'sorting_foreign' => $imageCount,
'sys_language_uid' => 0
];
if ($this->getDatabaseConnection()->exec_INSERTquery('sys_file_reference', $dataArray)) {
$imageCount++;
}
}

Answer 2

It was a very stupid and simple mistake from my part. In the edit form I forgot to add this: enctype="multipart/form-data"
<f:form action="update" enctype="multipart/form-data" name="blog" object="{blog}" >