Ublaboo\DataGrid\DataGrid::findDefaultPerPage PHP Method

    public function findDefaultPerPage()
    {
        if (!empty($this->per_page)) {
            return;
        }
        if (!empty($this->default_per_page)) {
            $this->per_page = $this->default_per_page;
        }
        $this->saveSessionData('_grid_per_page', $this->per_page);
    }