public function getData()
 {
     $printed = \Request::get("printed");
     $printed = empty($printed) ? 'NO' : $printed;
     $results = LiveData::getResultsList($printed);
     return \Datatables::of($results)->addColumn('sample_checkbox', function ($result) {
         session(['facility' => $result->facility]);
         return "<input type='checkbox' name='samples[]' value={$result->sample_id}>";
     })->addColumn('action', function ($result) {
         $url = "/result/{$result->sample_id}?printed={$result->printed}";
         $links = ['Print preview' => "javascript:windPop('{$url}')", 'Download' => "{$url}&pdf=1"];
         return \MyHTML::dropdownLinks($links);
     })->make(true);
 }