[FLOW3-general] Exception while property mapping at property path "":Object with identity "" not found.

[Matthias Habegger]

Hi there,

I want to filter my list by a few criteria, so I programmed a nice 
filter form.
Everything works fine, until I select the empty filter, then I get the 
following Error:
--
Uncaught Exception in FLOW3
#1297759968: Exception while property mapping at property path "":Object 
with identity "" not found. (More information)
...

Nested Exception
#1297933823: Object with identity "" not found. (More information)
...
--


Template:
--
<f:form action="search">
   <f:form.textfield name="text" value="{text}" />
   <f:form.select name="language" value="{language}" 
options="{languages}" optionLabelField="name"
   <f:form.submit value="Search"/>
</f:form>

<f:for each="{books}" as="book">
   {book.title}
</f:for>
--

Action method in controller:
--
	/**
	 * Shows a list of all books with a nice filter
	 *
	 * @param string $text The contained text
	 * @param \Habex\Library\Domain\Model\Language $language The language 
to filter
	 * @return void
	 */
	public function searchAction($text='', 
\Habex\Library\Domain\Model\Language $language = NULL) {
		$this->view->assign('text', $text);

		$languages = array_merge(Array('' => ''), 
$this->languageRepository->findAll()->toArray());
		$this->view->assign('languages', $languages);
		$this->view->assign('language', $language);

		$this->view->assign('books', 
$this->bookRepository->findWithFilter($this->userRepository->findActive(), 
$text, $language);
	}
--

Thanks.

-Matthias