public function up()    {        $url = Env::get('root_path').config('diydb.mypublic');        $storage = new \Upload\Storage\FileSystem($url);        $file = new \Upload\File('foo', $storage);        dump($file);// Optionally you can rename the file on upload        $new_filename = uniqid();        $YMD = date("Y-m-d",\time());        $file->setName($YMD);// Validate file upload// MimeType List => http://www.iana.org/assignments/media-types/media-types.xhtml        $file->addValidations(array(            // Ensure file is of type "image/png"            new \Upload\Validation\Mimetype(['image/png','image/gif','image/jpg','image/jpeg']),            //You can also add multi mimetype validation            //new \Upload\Validation\Mimetype(array('image/png', 'image/gif'))            // Ensure file is no larger than 5M (use "B", "K", M", or "G")            new \Upload\Validation\Size('10M')        ));// Access data about the file that has been uploaded        $data = [            'name'       => $file->getNameWithExtension(),            'extension'  => $file->getExtension(),            'mime'       => $file->getMimetype(),            'size'       => $file->getSize(),            'md5'        => $file->getMd5(),            'dimensions' => $file->getDimensions()        ];// Try to upload file        try {            // Success!            $d = $file->upload();            dump($d);        } catch (\Exception $e) {            // Fail!            $errors = $file->getErrors();            dump($data);        }    }