librenms-librenms/html/includes/forms/delete-device-group.inc.php

<?php

/*
 * LibreNMS
 *
 * Copyright (c) 2014 Neil Lathwood <https://github.com/laf/ http://www.lathwood.co.uk/fa>
 *
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at your
 * option) any later version.  Please see LICENSE.txt at the top level of
 * the source code distribution for details.
 */
header('Content-type: text/plain');

if (is_admin() === false) {
    die('ERROR: You need to be admin');
}

if (!is_numeric($_POST['group_id'])) {
    echo 'ERROR: No group selected';
    exit;
} else {
    if (dbDelete('device_groups', '`id` =  ?', array($_POST['group_id']))) {
        dbDelete('alert_group_map', 'group_id=?', [$_POST['group_id']]);

        echo 'Group has been deleted.';
        exit;
    } else {
        echo 'ERROR: Group has not been deleted.';
        exit;
    }
}