Grido\Grid::applySorting PHP Метод

    protected function applySorting()
    {
        $sort = [];
        $this->sort = $this->sort ? $this->sort : $this->defaultSort;
        foreach ($this->sort as $column => $dir) {
            $component = $this->getColumn($column, FALSE);
            if (!$component) {
                if (!isset($this->defaultSort[$column])) {
                    $this->__triggerUserNotice("Column with name '{$column}' does not exist.");
                    break;
                }
            } elseif (!$component->isSortable()) {
                if (isset($this->defaultSort[$column])) {
                    $component->setSortable();
                } else {
                    $this->__triggerUserNotice("Column with name '{$column}' is not sortable.");
                    break;
                }
            }
            if (!in_array($dir, [Column::ORDER_ASC, Column::ORDER_DESC])) {
                if ($dir == '' && isset($this->defaultSort[$column])) {
                    unset($this->sort[$column]);
                    break;
                }
                $this->__triggerUserNotice("Dir '{$dir}' is not allowed.");
                break;
            }
            $sort[$component ? $component->column : $column] = $dir == Column::ORDER_ASC ? 'ASC' : 'DESC';
        }
        if (!empty($sort)) {
            $this->getModel()->sort($sort);
        }
    }