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();
	}