/**
  * Display a listing of the resource.
  * GET
  * @return Response
  */
 public function index()
 {
     $uid_from = Input::get('uid_from');
     $uid = Input::get('uid');
     if (!empty($uid_from)) {
         // get all messsages from uid to / from
         return Messages::whereRaw('uid_from = ' . $uid_from . ' AND uid_to=' . $uid . '')->get();
     } else {
         // get list of users
         return Messages::whereRaw('uid_to=' . $uid . '')->get();
     }
 }