Edit form with file input in zend framework 2 - file-io

Question

I use fielrenameupload validation and fileprg to upload file in my form .
It works very well but in edit action validation fails for file input
How I can solve this problem in edit action ?
this is edit action that works great for add action :
public function editAction()
{
$id = $this->params()->fromRoute('id',0);
$category = $this->categoryTable->get($id);
$form = $this->getServiceLocator()->get('CategoryForm');
$prg = $this->fileprg($form);
$form->bind($category);
if ($prg instanceof \Zend\Http\PhpEnviroment\Response)
{
return $prg;
}
elseif (is_array($prg))
{
if ($form->isValid())
{
$data = $form->getData();
$data['image'] = $data['image']['tmp_name'];
$category = new CategoryEntity;
$category->exchangeArray($data);
if ($this->categoryTable->save($category))
$this->redirect()->toRoute(null,array('action'=>'index'));
}
}
$view = new ViewModel(array(
'form' => $form,
));
$view->setTemplate('category/admin/add');
return $view;
}
And this is validation code for file input :
$image = new \Zend\InputFilter\FileInput('image');
$image->getFilterChain()->attachByName('filerenameupload',array(
'target' => 'data/upload/images/category',
'use_upload_name' => true,
'randomize' => true,
));

Answer 1

The add action passes the $form->isValid() validation because there is a image file posted in the form submit. However, in the edit action, it's empty.
In order to avoid avoid the problem you're facing try the following:
$imageFilter = $form->getInputFilter()->get( 'image' );
$imageFilter->setRequired( false );
Just be sure to place this lines before the $form->isValid() line.