/**
* Autocomplete the label of an entity.
*
* @param \Symfony\Component\HttpFoundation\Request $request
* The request object that contains the typed tags.
* @param string $target_type
* The ID of the target entity type.
* @param string $selection_handler
* The plugin ID of the entity reference selection handler.
* @param string $selection_settings
* The settings that will be passed to the selection handler.
*
* @return \Symfony\Component\HttpFoundation\JsonResponse
* The matched entity labels as a JSON response.
*/
public function handleAutocomplete(Request $request, $target_type, $selection_handler, $selection_settings = '')
{
$matches = array();
// Get the typed string from the URL, if it exists.
if ($input = $request->query->get('q')) {
$typed_string = Tags::explode($input);
$typed_string = Unicode::strtolower(array_pop($typed_string));
// Selection settings are passed in as an encoded serialized array.
$selection_settings = $selection_settings ? unserialize(base64_decode($selection_settings)) : array();
$matches = $this->matcher->getMatches($target_type, $selection_handler, $selection_settings, $typed_string);
}
return new JsonResponse($matches);
}
/**
* Autocomplete the label of an entity.
*
* @param \Symfony\Component\HttpFoundation\Request $request
* The request object that contains the typed tags.
* @param string $target_type
* The ID of the target entity type.
* @param string $selection_handler
* The plugin ID of the entity reference selection handler.
* @param string $selection_settings_key
* The hashed key of the key/value entry that holds the selection handler
* settings.
*
* @return \Symfony\Component\HttpFoundation\JsonResponse
* The matched entity labels as a JSON response.
*
* @throws \Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException
* Thrown if the selection settings key is not found in the key/value store
* or if it does not match the stored data.
*/
public function handleAutocomplete(Request $request, $target_type, $selection_handler, $selection_settings_key)
{
$matches = array();
// Get the typed string from the URL, if it exists.
if ($input = $request->query->get('q')) {
$typed_string = Tags::explode($input);
$typed_string = Unicode::strtolower(array_pop($typed_string));
// Selection settings are passed in as a hashed key of a serialized array
// stored in the key/value store.
$selection_settings = $this->keyValue->get($selection_settings_key, FALSE);
if ($selection_settings !== FALSE) {
$selection_settings_hash = Crypt::hmacBase64(serialize($selection_settings) . $target_type . $selection_handler, Settings::getHashSalt());
if ($selection_settings_hash !== $selection_settings_key) {
// Disallow access when the selection settings hash does not match the
// passed-in key.
throw new AccessDeniedHttpException('Invalid selection settings key.');
}
} else {
// Disallow access when the selection settings key is not found in the
// key/value store.
throw new AccessDeniedHttpException();
}
$matches = $this->matcher->getMatches($target_type, $selection_handler, $selection_settings, $typed_string);
}
return new JsonResponse($matches);
}