/**
* The POST method for setting a user's rows per page
*
* @param string $modelName
*
* @return JSON
*/
public function rowsPerPage($modelName)
{
$dataTable = App::make('admin_datatable');
//get the inputted rows and the model rows
$rows = (int) Input::get('rows', 20);
$dataTable->setRowsPerPage(App::make('session.store'), 0, $rows);
return Response::JSON(array('success' => true));
}