public function rate($id)
 {
     $wbbUId = \Input::get('wbbUId');
     $i = explode('_', explode(' ', \Input::get('clickedOn'))[0])[1];
     $c = Rating::where('downloadId', $id)->where('WbbUId', $wbbUId)->count();
     if ($c > 0) {
         Rating::where('downloadId', $id)->where('WbbUId', $wbbUId)->update(array('value' => $i));
     } else {
         Rating::create(array('value' => $i, 'downloadId' => $id, 'WbbUId' => $wbbUId));
     }
     return response(array('avg' => intval(round(Rating::getAvg($id)))));
 }