[TYPO3-dev] get filepath in Extbase

[t3-dev at bworx.de]

Hi,

I am not experienced with extbase so sorry for any stupid questions. I
have searched the web for a couple of hours and cant find a solution:

Some of my db entries (books) have a file (PDF) attached to them. When a
user fills out a form they should be sent the corresponding file. I send
the email thorugh the swiftmailer Instance. I have figured out how to
attach a file but I fail at getting the real file from the DB Reference.
All I get is "TYPO3\CMS\Extbase\Domain\Model\FileReference:157". Trying to
turn that into the originalResource has failed so far. What I have:

TCA

		'file' => array(
			'exclude' => 1,
			'label' =>
'LLL:EXT:tx_test_ext/Resources/Private/Language/locallang_db.xlf:tx_test_ext_domain_model_book.file',
			'config' =>
\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::getFileFieldTCAConfig(
				'file',
				array('maxitems' => 1),
				'pdf'
			),
		),

Model

  /**
	 * Returns the file
	 *
	 * @return \TYPO3\CMS\Extbase\Domain\Model\FileReference $file
	 */
	public function getFile() {
                return $this->file;
	}

	/**
	 * Sets the file
	 *
	 * @param \TYPO3\CMS\Extbase\Domain\Model\FileReference $file
	 * @return void
	 */
	public function setFile(\TYPO3\CMS\Extbase\Domain\Model\FileReference
$file) {
		$this->file = $file;
	}

Controller

$tempAttach1 = $book->getFile();

So I guess I need to somehow adjust the getFile function ... I tried
return $this->file->getOriginalResource(); amongst others but that just
kills the ext saying I'm trying to call to a member function
getOriginalResource() on a non-object - so I guess I need to turn it into
an object beforehand. But I have no clue how I shoould do this. Any hints?

Thanks, Jan