Zend1 form upload document file - forms

Question

I've got an "addForm" and a "editForm". After I have added a document file in the addForm, it will be saved in my db. If I want to edit this form, I have to upload this document again. The old document will be deleted. I would like to make a function to check whether the document is already uploaded or not, so I do not have to upload it every time I want to edit an item. I just do not know where to start. A little help will be great.
my add/editform:
$pdf = new Zend_Form_Element_File('document');
$pdf->setLabel('Nieuwe PDF')
->addValidator('extension', true, array('docx',
'docx','pdf','txt'))
->addValidator('Count', false, 1)
->addValidator('Size', false, 10240000)
->setDestination( PUBLIC_PATH . '/../data/invoicespdf/')
->setRequired(false);

Answer 1

Try using this in the controller...modify it to fit your needs :
if ($request->isPost()) {
if ($form->isValid($request->getPost())) {
if ('administrator' == $user->role) {
$oldFileName = $form->getElement('oldfilename')->getValue(); //the hidden field
$data = $form->getValues();
$model->populate($data);
if (file_exists('uploads/cv/' . $oldFileName)) {
$form->getElement('cv')->setIgnore(true); //this is my Form File Element - the file exists, I don't need to store the filename
} else { // if you want you can unlink $oldFileName
$upload = new Zend_File_Transfer_Adapter_Http();
$info = $upload->getFileInfo('cv');
$upload->setDestination("uploads/cv/");
if (file_exists('uploads/cv/' . $info['cv']['name'])) {
$newFileName = time() . rand(0, 100000) . "-" . $info['cv']['name']; // I need to avoid overwriting file
} else {
$newFileName = $info['cv']['name'];
$upload->addFilter('Rename', $newFileName);
}
try {
$upload->receive();
} catch (Zend_File_Transfer_Exception $e) {
$e->getMessage();
}
}
$model->save();
return $this->_helper->redirector('list');
} else {
//some error message
$this->_helper->redirector('list');
}
} else { //form not valid
$this->view->form = $form;
}
} else {
$model->find($id);
$data = array();
$data = $model->toArray();
$data['oldfilename'] = $model->get_cv(); //the filename stored in db
$form->getElement('cv')->setRequired(false);
$form->populate($data);
$this->view->form = $form;
}