/**
* Utility static to avoid repetition.
*
* @param Controller $controller
* @param string $identifier e.g. 'ParentID' or 'ID'
* @retun number
*/
public static function get_numeric_identifier($controller, $identifier = 'ID')
{
// Deal-to all types of incoming data
if (!$controller->hasMethod('currentPageID')) {
return 0;
}
// Use native SS logic to deal with an identifier of 'ID'
if ($identifier == 'ID') {
$useId = $controller->currentPageID();
// Otherwise it's custom
} else {
$params = $controller->getRequest()->requestVars();
$idFromFunc = function () use($controller, $params, $identifier) {
if (!isset($params[$identifier])) {
if (!isset($controller->urlParams[$identifier])) {
return 0;
}
return $controller->urlParams[$identifier];
}
return $params[$identifier];
};
$useId = $idFromFunc();
}
// We may have a padded string e.g. "1217 ". Without first truncating, we'd return 0 and pass tests...
$id = (int) trim($useId);
return !empty($id) && is_numeric($id) ? $id : 0;
}
