wavelog/application/controllers/Operator.php

<?php if (!defined('BASEPATH')) exit('No direct script access allowed');

# This is the controller for the operator dialog which can be enabled for special callsign activities
# Check out the config "special_callsign" in your config.php for more information

class Operator extends CI_Controller {

    public function displayOperatorDialog() {

        $this->load->view('operator/index');
        
    }

    public function saveOperator() {

        $operator = ['operator_callsign' => $this->security->xss_clean(strtoupper($this->input->post('operator_callsign')))];

        $this->session->set_userdata($operator);
    }
}