There are several ways of renaming files if you don’t want to use Zend_Form_Element component. However, the following is a ZF technique.Suppose you have a very basic form with a single file element:
Form.php
class My_Form extends Zend_Form { public function init() { $element = new Zend_Form_Element_File('imagefile'); $element->setLabel('Upload an image:'); $element->setDestination($uploaddir); /* file directory */ $element->addValidator('Count', false, 1); $element->addValidator('Size', false, 202400); $element->setRequired(false); $element->addValidator('IsImage', false, 'jpeg,jpg,png,gif'); $this->addElement($element, 'imagefile'); } }
What you need to do is to override the isValid( .. ) method of your Form Object:
Form.php
public function isValid($data) { $oldname = pathinfo($this->imagefile->getFileName()); $newname = $this->getUniqueCode(10) . '.' . $oldname['extension']; $this->imagefile->addFilter('Rename',$newname); return parent::isValid($data); }
If you don’t want to loose your other validators , don’t forget to call the parent isValid() method . As you can see, I used PHP’s pathinfo() method to parse the file path. (There should be another one in ZF ). I renamed it with a string of 10 random characters, and kept the extension as it was. Below is the method that you can use for the random file name :
function getUniqueCode($length = "") { $code = md5(uniqid(rand(), true)); if ($length != "") return substr($code, 0, $length); else return $code; }
Finally, in your controller, you basically check if the form is valid,
MyFormController.php
$request = $this->getRequest(); $form = new My_Form(); if ($request->isPost()) { if ($form->isValid($request->getPost())) { $formData = $form->getValues(); try { $form->imagefile->receive(); } catch (Exception $e) { throw new Zend_Exception ('There is a problem with the file upload'); } } }
I hope it helps.
