image object is lost - typo3

Question

My Extention passes a Model to fluid via
$this->view->assign('theSingleData', $object);
$this->view->assign('theMultipleData', $multipleObjects);
the object/thedata contains an image:
f:debug of theSingleData gives me this:
image => TYPO3\CMS\Extbase\Domain\Model\FileReferenceprototypepersistent entity (uid=17069, pid=341)
perfect. I can render the image with
<f:image....>
but 'theMultipleData' I process this way since its an array (just tested: it IS an array of 10 objects):
<f:for each="{theMultipleData}" as="item">
<f:debug inline="true">{item}</f:debug>
</f:for>
this is fine for all fields but the image:
'Extbase Variable Dump
image => '1' (1 chars)'
Where is my object gone????

Answer 1

If you assign multiple data you should use the corresponding method:
$this->view->assignMultiple($multipleObjects);
while $multipleObjects is an array with pairs of key and value:
$multipleObjects = [
'key1' => $value1,
'key2' => $value2,
'key3' => $value3,
...
];
In the template you have the values then available by the keys: {key1}, {key2}, {key3}, ...
So in general you can treat each pair like a common assignement you did with
$this->view->assign('key1', $value1);
$this->view->assign('key2', $value2);
$this->view->assign('key3', $value3);
...
I'd advise to use the method $this->view->assignMultiple() I mentioned above and then it will work if everything else is fine.
Details about the method $this->view->assignMultiple() you find here.