How to use Zend_File_Transfer? - zend-framework

Question

I have been using normal file upload element to upload files and validate them. But recently, I found out that implementing a Zend_file_tranfer gives much control over the file.
I am searched Everywhere in the internet searching for a simple example to get started with it, but none of them show how they are linked to the element. I dont know where to create the object of Zend_File_Transfer, and how to add it to the element? I basically dont know, how to use it.
Can anyone give me a beginners example of using zend_File_tranfers, in both zend_form and Zend_Controller_Action

Answer 1

In form:
class Application_Form_YourFormName extends Zend_Form
{
public function __construct()
{
parent::__construct($options);
$this->setAction('/index/upload')->setMethod('post');
$this->setAttrib('enctype', 'multipart/form-data');
$upload_file = new Zend_Form_Element_File('new_file');
$new_file->setLabel('File to Upload')->setDestination('./tmp');
$new_file->addValidator('Count', false, 1);
$new_file->addValidator('Size', false, 67108864);
$new_file->addValidator('Extension', false, Array('png', 'jpg'));
$submit = new Zend_Form_Element_Submit('submit');
$submit->setLabel('Upload');
$this->addElements(array($upload_file, $submit));
}
}
In controller:
class Application_Controller_IndexController extends Zend_Controller_Action
{
public function uploadAction()
{
$this->uform = new Application_Form_YourFormName();
$this->uform->new_file->receive();
$file_location = $this->uform->new_file->getFileName();
// .. do the rest...
}
}

Answer 2

When you create your form do something like this in your form:
$image = $this->getElement('image');
//$image = new Zend_Form_Element_File();
$image->setDestination(APPLICATION_PATH. "/../data/images"); //!!!!
$extension = $image->getFileName();
if (!empty($extension))
{
$extension = #explode(".", $extension);
$extension = $extension[count($extension)-1];
$image->addFilter('Rename', sprintf('logo-%s.'.$extension, uniqid(md5(time()), true)));
}
$image
->addValidator('IsImage', false, $estensioni)//doesn't work on WAMPP/XAMPP/LAMPP
->addValidator('Size',array('min' => '10kB', 'max' => '1MB', 'bytestring' => true))//limit to 200k
->addValidator('Extension', false, $estensioni)// only allow images to be uploaded
->addValidator('ImageSize', false, array(
'minwidth' => $img_width_min,
'minheight' => $img_height_min,
'maxwidth' => $img_width_max,
'maxheight' => $img_height_max
)
)
->addValidator('Count', false, 1);// ensure that only 1 file is uploaded
// set the enctype attribute for the form so it can upload files
$this->setAttrib('enctype', 'multipart/form-data');
Then when you submit your form in your controller:
if ($this->_request->isPost() && $form->isValid($_POST)) {
$data = $form->getValues();//also transfers the file
....

Answer 3

Here are some links that can help you.
Zend Documentation
Same Question on SO
Step By Step Toturial
Another Useful Link