public function step2()
    {
        if($this->session->userdata('type') != 1){
                redirect('Devolucion/index');
        }
        if($this->session->userdata('step2') ===true){
                redirect('Devolucion/step3');
        }

        echo 'esto es= '.$this->session->userdata('server');
        $data['error'] = '';
        $this->form_validation->set_rules('usuario_old','usuario_old','required|max_length[12]|alpha_numeric');
        $this->form_validation->set_rules('password_old','password_old','required|max_length[12]|alpha_numeric');
        $this->form_validation->set_rules('email_old','email_old','required|max_length[50]|valid_email');
        $this->form_validation->set_rules('character','character','required|max_length[12]|alpha_numeric');

        if($this->form_validation->run() === true){
        // guardamos el servidor antes de comenzar las validaciones de datos para poder designar a cual base de datos nos conectaremos en el modelo de datos.
        $_SESSION['server'] = (int) $this->server;

            if($this->input->post('accion') === 'step2'){

                if($this->Devolucion_model->valDatos($this->user_old,$this->pass_old,$this->email_old)){
                    if($this->checKExistsChar($this->user_old,$this->char_old)=== true){

                        $rows =$this->Devolucion_model->getMailValidate($this->user_old,'2');
                        if($rows['mail_validate'] == '1' && $rows['mail_validate']!= null ){
                            $_SESSION['step2'] = (bool) true;
                            $_SESSION['emailOld'] = (string) $this->email_old;
                            $_SESSION['userOld'] = (string) $this->user_old;
                            $_SESSION['server'] = (int) $this->server;

                            redirect('devolucion/step4');
                        }else{
                            $key = strtoupper(bin2hex($this->encryption->create_key(20)));
                            // insertamos nueva key
                            $this->Devolucion_model->updateKey($this->user_old,$key);

                            // notificamos y enviamos key al email
                            $this->notificar($this->user_old,$this->email_old,$key);

                            $_SESSION['step2'] = (bool) true;
                            $_SESSION['emailOld'] = (string) $this->email_old;
                            $_SESSION['userOld'] = (string) $this->user_old;
                            $_SESSION['server'] = (int) $this->server;

                            //redireccionamos step 3
                            redirect('Devolucion/step3');

                        }

                    }else{
                        $data['error'] = 'Personaje Inexistente';
                    }
                }else{
                    $data['error'] = 'Usuario,contraseña o correo incorrectos';
                    //$this->load->view()
                }
            }
        }


        $data['user'] = $this->user_activate;

        $this->load->view('devoluciones/step2',$data);
    }