public function addEspectacle()
 {
     $postdata = file_get_contents("php://input");
     $request = json_decode($postdata, true);
     try {
         $EM = new EntradesModel();
         $RET = $EM->addEspectacle($request['data']);
         echo json_encode($RET);
     } catch (\Exception $e) {
         Err::throwError($e);
     }
 }