Grido\Grid::getRowPrototype PHP Method

    public function getRowPrototype($row)
    {
        try {
            $primaryValue = $this->getProperty($row, $this->getPrimaryKey());
        } catch (\Exception $e) {
            $primaryValue = NULL;
        }
        $tr = \Nette\Utils\Html::el('tr');
        $primaryValue ? $tr->class[] = "grid-row-{$primaryValue}" : NULL;
        if ($this->rowCallback) {
            $tr = call_user_func_array($this->rowCallback, [$row, $tr]);
        }
        return $tr;
    }