public function redrawItem($id, $primary_where_column = NULL)
{
$this->snippets_set = TRUE;
$this->redraw_item = [$primary_where_column ?: $this->primary_key => $id];
$this->redrawControl('items');
$this->getPresenter()->payload->_datagrid_url = $this->refresh_url;
$this->onRedraw();
}