/**
* Override parent's method and return array.
*
* @param bool $filter
*
* @return array
*/
protected function get_data($filter = true)
{
$data = array_filter(explode(',', parent::get_data(false)), function ($var) {
return !empty($var);
});
if ($filter) {
$data = array_map(function ($val) {
return $this->filter($val);
}, $data);
}
return $data;
}
