/**
* Build a potentially nested fieldgroup
*
* @param mixed $valueOrGroup Value of item, or title of group
* @param string|array $titleOrOptions Title of item, or options in grouip
* @return ArrayData Data for this item
*/
protected function getFieldOption($valueOrGroup, $titleOrOptions)
{
// Return flat option
if (!is_array($titleOrOptions)) {
return parent::getFieldOption($valueOrGroup, $titleOrOptions);
}
// Build children from options list
$options = new ArrayList();
foreach ($titleOrOptions as $childValue => $childTitle) {
$options->push($this->getFieldOption($childValue, $childTitle));
}
return new ArrayData(array('Title' => $valueOrGroup, 'Options' => $options));
}