Ublaboo\DataGrid\Column\ItemDetail::getPrimaryWhereColumn PHP Method

    public function getPrimaryWhereColumn()
    {
        return $this->primary_where_column;
    }

 /**
  * Handler for getting item detail
  * @param  mixed $id
  * @return void
  */
 public function handleGetItemDetail($id)
 {
     $this->template->add('toggle_detail', $id);
     $this->redraw_item = [$this->items_detail->getPrimaryWhereColumn() => $id];
     if ($this->getPresenter()->isAjax()) {
         $this->getPresenter()->payload->_datagrid_toggle_detail = $id;
         $this->redrawControl('items');
         $this->onRedraw();
     } else {
         $this->getPresenter()->redirect('this');
     }
 }