eZ\Publish\Core\REST\Common\Output\ValueObjectVisitor::serializeSortField PHP Метод

    protected function serializeSortField($sortField)
    {
        switch ($sortField) {
            case Location::SORT_FIELD_PATH:
                return 'PATH';
            case Location::SORT_FIELD_PUBLISHED:
                return 'PUBLISHED';
            case Location::SORT_FIELD_MODIFIED:
                return 'MODIFIED';
            case Location::SORT_FIELD_SECTION:
                return 'SECTION';
            case Location::SORT_FIELD_DEPTH:
                return 'DEPTH';
            case Location::SORT_FIELD_CLASS_IDENTIFIER:
                return 'CLASS_IDENTIFIER';
            case Location::SORT_FIELD_CLASS_NAME:
                return 'CLASS_NAME';
            case Location::SORT_FIELD_PRIORITY:
                return 'PRIORITY';
            case Location::SORT_FIELD_NAME:
                return 'NAME';
            case Location::SORT_FIELD_MODIFIED_SUBNODE:
                return 'MODIFIED_SUBNODE';
            case Location::SORT_FIELD_NODE_ID:
                return 'NODE_ID';
            case Location::SORT_FIELD_CONTENTOBJECT_ID:
                return 'CONTENTOBJECT_ID';
        }
        throw new \RuntimeException("Unknown default sort field: '{$sortField}'.");
    }