CakePHP Setup for Ver. 2.*.*

Steps

1. Place UploadHandler.php in vendor/file.upload. You can use any name instead of file.upload.
2. Have jQuery setup in your app.
3. Copy jQuery File Upload files in the proper directories of your Cake app, usually webroot/js.
4. You can now initialize jQuery-File-Upload options in your controller using following way.

App::import('Vendor', 'UploadHandler', array('file' => 'file.upload/UploadHandler.php'));
$options = array(
	        'upload_dir' => 'Your upload directory', 	    
	        'accept_file_types' => '/\.(gif|jpe?g|png)$/i'                     
           );

$upload_handler = new UploadHandler($options);

Dynamically Changing the Upload Folder

You can change the upload folder in CakePHP by simply attaching the upload behavior and passing path in the upload settings. Use these lines just before saving the data.

$this->User->Behaviors->attach('Upload');
$this->User->uploadSettings('profile_pic', 'path', 'Your new upload path');