/** * Sort data * @param Sorting $sorting * @return static */ public function sort(Sorting $sorting) { if (is_callable($sorting->getSortCallback())) { call_user_func($sorting->getSortCallback(), $this->data_source, $sorting->getSort()); return $this; } $sort = $sorting->getSort(); if (!empty($sort)) { foreach ($sort as $column => $order) { $this->data_source = $this->data_source->orderBy($column, $order); } } else { /** * Has the statement already a order by clause? */ $order = $this->data_source->getQueryBuilder()->getClause('order'); if (ArraysHelper::testEmpty($order)) { $this->data_source = $this->data_source->orderBy($this->primary_key); } } return $this; }