CRUDlex\MySQLData::addSort PHP Method

    protected function addSort(QueryBuilder $queryBuilder, $sortField, $sortAscending)
    {
        if ($sortField !== null) {
            $type = $this->definition->getType($sortField);
            if ($type === 'many') {
                $sortField = $this->definition->getInitialSortField();
            }
            $order = $sortAscending === true ? 'ASC' : 'DESC';
            $queryBuilder->orderBy('`' . $sortField . '`', $order);
        }
    }