public EntityAutocompleteController::handleAutocomplete(Request $request, $target_type, $selection_handler, $selection_settings_key)
Autocomplete the label of an entity.
Parameters
\Symfony\Component\HttpFoundation\Request $request: The request object that contains the typed tags.
string $target_type: The ID of the target entity type.
string $selection_handler: The plugin ID of the entity reference selection handler.
string $selection_settings_key: The hashed key of the key/value entry that holds the selection handler settings.
Return value
\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.
File
- core/modules/system/src/Controller/EntityAutocompleteController.php, line 79
Class
- EntityAutocompleteController
- Defines a route controller for entity autocomplete form elements.
Namespace
Drupal\system\Controller
Code
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);
}
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