/**
* Gets the table which contains the sort field.
*
* @param DataList $list
* @return string
*/
public function getSortTable(SS_List $list)
{
$field = $this->getSortField();
if ($list instanceof ManyManyList) {
$extra = $list->getExtraFields();
$table = $list->getJoinTable();
if ($extra && array_key_exists($field, $extra)) {
return $table;
}
}
$classes = ClassInfo::dataClassesFor($list->dataClass());
foreach ($classes as $class) {
if (singleton($class)->hasOwnTableDatabaseField($field)) {
return $class;
}
}
throw new Exception("Couldn't find the sort field '{$field}'");
}