/**
* Method that retrieves select input options by list name.
*
* @param string $listName list name
* @param string $spacer The string to use for prefixing the values according to
* their depth in the tree
* @param bool $flatten flat list flag
* @return array list options
*/
protected function _getSelectOptions($listName, $spacer = ' - ', $flatten = true)
{
$result = $this->__getListFieldOptions($listName);
$result = $this->__filterOptions($result);
if (!$flatten) {
return $result;
}
// flatten list options
$collection = new Collection($result);
$result = $collection->listNested()->printer('name', 'id', $spacer)->toArray();
return $result;
}
