Zend-From文件上传不起作用

我在使用Zend Framework上传文件时遇到一些问题。我已经创建了一个表单，如下所示，并将数据输入传递给我的模型，我正试图上传文件。然而，它似乎只得到了文件名，无法上传到我的上传目录。

表单

<?php
class Application_Form_Admin extends Zend_Form
{
    public function init()
    {
        // Set the method for the display form to POST
        $this->setMethod('post');
        // set the data format
        $this->setAttrib('enctype', 'multipart/form-data');
        // Add the title
        $this->addElement('file', 'ogimage', array(
            'label'      => 'Default App Image',
            'required'   => false
        ));
        // Add the submit button
        $this->addElement('submit', 'submit', array(
            'ignore'   => true,
            'label'    => 'Submit',
        ));
        // And finally add some CSRF protection
        $this->addElement('hash', 'csrf', array(
            'ignore' => true,
        ));
    }

}

控制器

<?php
class AdminController extends Zend_Controller_Action
{
    /**
     * @var The Admin Model
     *
     *
     */
    protected $app = null;
    /**
     * init function.
     *
     * @access public
     * @return void
     *
     *
     */
    public function init()
    {
        // get the model
        $this->app = new Application_Model_Admin();
    }
    /**
     * indexAction function.
     *
     * @access public
     * @return void
     *
     *
     */
    public function indexAction()
    {
        // get a form
        $request = $this->getRequest();
        $form    = new Application_Form_Admin();
        // pre populate form
        $form->populate((array) $this->app->configData());
        // handle form submissions
        if($this->getRequest()->isPost()) {
            if($form->isValid($request->getPost())) {
                // save the clips
                $this->app->saveConfig($form);
                // redirect
                //$this->_redirect('/admin/clips');
            }
        }
        // add the form to the view
        $this->view->form = $form;
    }
}

型号

class Application_Model_Admin
{
    /**
    * @var Bisna'Application'Container'DoctrineContainer
    */
    protected $doctrine;
    /**
    * @var Doctrine'ORM'EntityManager
    */
    protected $entityManager;
    /**
    * @var ZC'Entity'Repository'FacebookConfig
    */
    protected $facebookConfig;
    /**
     * Constructor
     */
    public function __construct(){
        // get doctrine and the entity manager
        $this->doctrine     = Zend_Registry::get('doctrine');
        $this->entityManager    = $this->doctrine->getEntityManager();
        // include the repository to get data
        $this->facebookConfig   = $this->entityManager->getRepository(''ZC'Entity'FacebookConfig');
    }

    /**
     * saveConfig function.
     * 
     * @access public
     * @param mixed $form
     * @return void
     */
    public function saveConfig($form){
        // get the entity
        $config = new 'ZC'Entity'FacebookConfig();
        // get the values
        $values = $form->getValues();
        // upload the file
        $upload = new Zend_File_Transfer_Adapter_Http();
        $upload->setDestination(APPLICATION_PATH . '/../uploads/');
        try {
            // upload received file(s)
            $upload->receive();
        } catch (Zend_File_Transfer_Exception $e) {
            $e->getMessage();
        }
// get some data about the file
$name = $upload->getFileName($values['ogimage']);
$upload->setOptions(array('useByteString' => false));
//$size = $upload->getFileSize($values['ogimage']);
//$mimeType = $upload->getMimeType($values['ogimage']);
print_r('<pre>');var_dump($name);print_r('</pre>');
//print_r('<pre>');var_dump($size);print_r('</pre>');
//print_r('<pre>');var_dump($mimeType);print_r('</pre>');
die;
// following lines are just for being sure that we got data
print "Name of uploaded file: $name 
";
print "File Size: $size 
";
print "File's Mime Type: $mimeType";
// New Code For Zend Framework :: Rename Uploaded File
$renameFile = 'file-' . uniqid() . '.jpg';
$fullFilePath = APPLICATION_PATH . '/../uploads/' . $renameFile;
// Rename uploaded file using Zend Framework
$filterFileRename = new Zend_Filter_File_Rename(array('target' => $fullFilePath, 'overwrite' => true));
$filterFileRename->filter($name);
        // loop through the clips and add to object
        foreach($values as $k => $column){
            $config->__set($k, $column);
        }
        // save or update the clips object
        if(empty($values['id'])){
            $this->entityManager->persist($config);
        } else {
            $this->entityManager->merge($config);
        }
        // execute the query
        $this->entityManager->flush();
        // set the id
        $form->getElement('id')->setValue($config->__get('id'));
    }

}