/**
* Evaluate the contao 2 sorting flag into sorting mode.
*
* @param ListingConfigInterface|PropertyInterface $config The property to evaluate the flag for.
*
* @param int $flag The flag to be evaluated.
*
* @return void
*/
protected function evalFlagSorting($config, $flag)
{
if ($flag < 0 || $flag > 12) {
return;
}
if ($flag % 2 == 1) {
$config->setSortingMode(ListingConfigInterface::SORT_ASC);
} else {
$config->setSortingMode(ListingConfigInterface::SORT_DESC);
}
}