chamilo-lms/main/work/work_missing.php

<?php
/* For licensing terms, see /license.txt */

use ChamiloSession as Session;

$language_file = array('exercice', 'work', 'document', 'admin', 'gradebook');

require_once '../inc/global.inc.php';
$current_course_tool  = TOOL_STUDENTPUBLICATION;

/*	Configuration settings */

api_protect_course_script(true);

// Including necessary files
require_once 'work.lib.php';
$this_section = SECTION_COURSES;

$workId = isset($_GET['id']) ? intval($_GET['id']) : null;

$group_id = api_get_group_id();

if (empty($workId)) {
    api_not_allowed(true);
}

$my_folder_data = get_work_data_by_id($workId);
if (empty($my_folder_data)) {
    api_not_allowed(true);
}

if (!api_is_allowed_to_edit(null, true)) {
    api_not_allowed(true);
}

// User with no works
$action = isset($_REQUEST['action']) ? $_REQUEST['action'] : 'list';

switch ($action) {
    case 'send_mail':
        $check = Security::check_token('get');
        if ($check) {
            $mails_sent_to = send_reminder_users_without_publication($my_folder_data);

            if (empty($mails_sent_to)) {
                $error_message = Display::return_message(get_lang('NoResults'), 'warning');
            } else {
                $error_message = Display::return_message(get_lang('MessageHasBeenSent').' '.implode(', ', $mails_sent_to), 'success');
            }

            if (!empty($error_message)) {
                Session::write('error_message', $error_message);
            }
            Security::clear_token();
        }
        break;
}

$token = Security::get_token();

if (!empty($group_id)) {
    $group_properties  = GroupManager::get_group_properties($group_id);
    $show_work = false;

    if (api_is_allowed_to_edit(false, true)) {
        $show_work = true;
    } else {
        // you are not a teacher
        $show_work = GroupManager::user_has_access(
            $user_id,
            $group_id,
            GroupManager::GROUP_TOOL_WORK
        );
    }

    if (!$show_work) {
        api_not_allowed();
    }

    $interbreadcrumb[] = array ('url' => api_get_path(WEB_CODE_PATH).'group/group.php', 'name' => get_lang('Groups'));
    $interbreadcrumb[] = array ('url' => api_get_path(WEB_CODE_PATH).'group/group_space.php?gidReq='.$group_id, 'name' => get_lang('GroupSpace').' '.$group_properties['name']);
}

$interbreadcrumb[] = array ('url' => api_get_path(WEB_CODE_PATH).'work/work.php?'.api_get_cidreq(), 'name' => get_lang('StudentPublications'));
$interbreadcrumb[] = array ('url' => api_get_path(WEB_CODE_PATH).'work/work_list_all.php?'.api_get_cidreq().'&id='.$workId, 'name' =>  $my_folder_data['title']);

if (isset($_GET['list']) && $_GET['list'] == 'with') {
    $interbreadcrumb[] = array ('url' => '#', 'name' => get_lang('UsersWithTask'));
} else {
    $interbreadcrumb[] = array ('url' => '#', 'name' => get_lang('UsersWithoutTask'));
}

Display :: display_header(null);

echo '<div class="actions">';
echo '<a href="'.api_get_path(WEB_CODE_PATH).'work/work_list_all.php?id='.$workId.'&'.api_get_cidreq().'&origin='.$origin.'&gradebook='.$gradebook.'">'.Display::return_icon('back.png', get_lang('BackToWorksList'),'',ICON_SIZE_MEDIUM).'</a>';

if (!empty($workId)) {
    if (empty($_GET['list']) or Security::remove_XSS($_GET['list']) == 'with') {
        $display_output .= '<a href="'.api_get_self().'?'.api_get_cidreq().'&amp;id='.$workId.'&amp;curdirpath='.$cur_dir_path.'&amp;origin='.$origin.'&amp;gradebook='.$gradebook.'&amp;list=without">'.
            Display::return_icon('exercice_uncheck.png', get_lang('ViewUsersWithoutTask'),'',ICON_SIZE_MEDIUM)."</a>";
    } else {
        if (!isset($_GET['action']) || (isset($_GET['action']) && $_GET['action'] != 'send_mail')) {
            $display_output .= '<a href="'.api_get_self().'?'.api_get_cidreq().'&amp;id='.$workId.'&amp;curdirpath='.$cur_dir_path.'&amp;origin='.$origin.'&amp;gradebook='.$gradebook.'&amp;list=without&amp;action=send_mail&amp;sec_token='.$token.'">'.
                Display::return_icon('mail_send.png', get_lang('ReminderMessage'),'',ICON_SIZE_MEDIUM)."</a>";
        } else {
            $display_output .= Display::return_icon('mail_send_na.png', get_lang('ReminderMessage'),'',ICON_SIZE_MEDIUM);
        }
    }
}

echo $display_output;
echo '</div>';

$error_message = Session::read('error_message');
if (!empty($error_message)) {
    echo $error_message;
    Session::erase('error_message');
}

display_list_users_without_publication($workId);