public function addQuestion()
 {
     $m = new Model(Config::$mvc_bd_nombre, Config::$mvc_bd_usuario, Config::$mvc_bd_clave, Config::$mvc_bd_hostname);
     if ($_SERVER['REQUEST_METHOD'] == 'POST') {
         //$result = $m->searchCategory($_POST['categoria']);
         $msg = $_POST['categoria'];
         //echo "<script type='text/javascript'>alert('$msg');</script>";
         $result1 = $m->addQuestion($_POST['categoria'], $_POST['titulo']);
         $result2 = $m->searchQuestion($_POST['titulo']);
         $result3 = $m->addAnswers($result2['ID_Pregunta'], $_POST['respCorrecta'], $_POST['resp1'], $_POST['resp2'], $_POST['resp3']);
     }
     if ($result1 == 'insertCorrect') {
         header("Location: ./edition");
     } else {
         header("Location: ./error");
     }
 }