Simple attachment with symfony2 and swiftmailer without move attachment before...

EnquiryController.php

...other stuff before....
/**
 *
 * use Symfony\Component\HttpFoundation\File\UploadedFile as UploadedFile;
 *
 * $message is instanceof \Swift_Message::newInstance()
 * $enquiry is instanceof EnquiryEntity
 * $enquiry->getAttachment() is the file-attribute for upload
 *
 */
if ($enquiry->getAttachment() instanceof UploadedFile) {

    $message->attach(
        \Swift_Attachment::fromPath(
            $enquiry->getAttachment()
        )
        ->setFilename(
            $enquiry->getAttachment()->getClientOriginalName()
        )
        ->setContentType(
            $enquiry->getAttachment()->getClientMimeType()
        )
    );
}