SQLSTATE [22P02]: Invalid text representation

I am developing a CRUD using the PDO extension, I just need to debug the following error that appears in the MODIFY part, I made several tests and found that when I presented the user with the modified form the input The ID must be hidden because we use it as a reference more than anything, right? Well, if I do not fill it manually (which is not the duty to be) and leave it hidden, I skip the error mentioned which is this:

  

Fatal error: Uncaught PDOException: SQLSTATE [22P02]: Invalid text representation: 7 ERROR: invalid input syntax for integer: "" in /var/www/html/Modules/Fermary/modelo/update-triunfador-modelo.php : 148 Stack trace: # 0 /var/www/html/Modulos/Fermary/modelo/actualizar-triunfador-modelo.php(148): PDOStatement-> execute () # 1 / var / www / html / Modules / Fermary /controller/form-actualize-trunner-controller.php(21): UpdateTrunner-> ModifyTrunner () # 2 {main} thrown in /var/www/html/Modulos/Fermary/modelo/actualizar-triunfador-modelo.php online 148

I am working with the MVC pattern I will leave you here pieces of code to see if we can solve this, anyway I will continue working and if I find the solution I share it with you:

Model (here I show the set method, the get method with which I print a record according to the id in the placeholder of the input that I will show later):

        public function setIdT($id){
            $this->id_triun = $id;
        }

        public function getIdT(){
            $PDOStatement = Conexion::query("SELECT id_triun FROM triunfador WHERE id_triun = {$this->id_triun}");
            $PDOStatement -> execute();
            $idTriunfador = $PDOStatement -> fetchAll(PDO::FETCH_ASSOC);
            return $idTriunfador;
        }    

        public  function ModificarTriunfador(){
            $consultaSQL = 'UPDATE triunfador SET nombre_triun = :nombreT,apellido_triun = :apellidoT,cedula_triun = :cedulaT,seccion_triun = :seccionT,trayecto_triun = :trayectoT,condicion_triun = :condicionT WHERE id_triun = :idT';


            $PDOStatement = Conexion::prepare($consultaSQL);

            $PDOStatement -> bindParam(':idT', $this->id_triun, PDO::PARAM_INT);
            $PDOStatement -> bindParam(':nombreT',$this->nombre_triun,PDO::PARAM_STR);
            $PDOStatement -> bindParam(':apellidoT',$this->apellido_triun,PDO::PARAM_STR);
            $PDOStatement -> bindParam(':cedulaT',$this->cedula_triun,PDO::PARAM_INT);
            $PDOStatement -> bindParam(':seccionT',$this->seccion_triun,PDO::PARAM_STR);
            $PDOStatement -> bindParam(':trayectoT',$this->trayecto_triun,PDO::PARAM_INT);
            $PDOStatement -> bindParam(':condicionT',$this->condicion_triun,PDO::PARAM_STR);


            $PDOStatement -> execute();


    }

Controller:

 <?php

       require_once '../modelo/actualizar-triunfador-modelo.php';

        $id = $_POST["Id"];
        $nombre_triun = $_POST["Nombre"];
        $apellido_triun = $_POST["Apellido"];
        $cedula_triun = $_POST["Cedula"];
        $seccion_triun = $_POST["Seccion"];
        $trayecto_triun = $_POST["Trayecto"];
        $condicion_triun = $_POST["Condicion"];

        $obj = new ActualizarTriunfador();
        $obj -> setIdT($id);
        $obj -> setNombreT($nombre_triun);
        $obj -> setApellidoT($apellido_triun);
        $obj -> setCedulaT($cedula_triun);
        $obj -> setTrayectoT($trayecto_triun);
        $obj -> setSeccionT($seccion_triun);
        $obj -> setCondicionT($condicion_triun);

        $obj -> ModificarTriunfador();


        header('location:../controlador/gestionar-triunfador-controlador.php');

? >

View (Here I have the input that I mentioned):

    <div class="form-group bounceInLeft animated">
    <label for="Id" class="Nombre hidden">ID</label>
    <input type="text" name="Id" placeholder="<?php foreach($Id as $Triunfador){echo intval($Triunfador['id_triun']);} ?>" class="center-block form-control" >
    </div>