Cloudlog/application/controllers/Distances.php

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

class Distances extends CI_Controller {

    function __construct()
    {
        parent::__construct();

        $this->load->model('user_model');
        if(!$this->user_model->authorize(2)) { $this->session->set_flashdata('notice', 'You\'re not allowed to do that!'); redirect('dashboard'); }
    }

    public function index()
    {
        // Render Page
        $data['page_title'] = "Distances worked";

        function js_str($s)
        {
            return '"' . addcslashes($s, "\0..\37\"\\") . '"';
        }

        function js_array($array)
        {
            $temp = array_map('js_str', $array);
            return '[' . implode(',', $temp) . ']';
        }

        $data['bands_available'] = js_array($this->config->item('bands_available'));

        $this->load->view('interface_assets/header', $data);
        $this->load->view('distances/index');
        $this->load->view('interface_assets/footer');
    }

    public function get_distances(){
        // POST data
        $postData = $this->input->post();

        //load model
        $this->load->model('Distances_model');

        if ($this->session->userdata('user_measurement_base') == NULL) {
            $measurement_base = $this->config->item('measurement_base');
        }
        else {
            $measurement_base = $this->session->userdata('user_measurement_base');
        }

        // get data
        $data = $this->Distances_model->get_distances($postData, $measurement_base);

        return json_encode($data);
    }

}