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880 lines
30 KiB
880 lines
30 KiB
<?php // $Id: index.php 16729 2008-11-12 15:53:07Z pcool $
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/*
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==============================================================================
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Dokeos - elearning and course management software
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Copyright (c) 2004-2008 Dokeos SPRL
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Copyright (c) 2003 Ghent University (UGent)
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Copyright (c) 2001 Universite catholique de Louvain (UCL)
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Copyright (c) various contributors
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For a full list of contributors, see "credits.txt".
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The full license can be read in "license.txt".
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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See the GNU General Public License for more details.
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Contact address: Dokeos, rue du Corbeau, 108, B-1030 Brussels, Belgium
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Mail: info@dokeos.com
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==============================================================================
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*/
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/**
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* @package dokeos.main
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* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University, Refactoring
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* @version $Id: index.php 16729 2008-11-12 15:53:07Z pcool $
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* @todo check the different @todos in this page and really do them
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* @todo check if the news management works as expected
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*/
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// only this script should have this constant defined. This is used to activate the javascript that
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// gives the login name automatic focus in header.inc.html.
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/** @todo Couldn't this be done using the $HtmlHeadXtra array? */
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define('DOKEOS_HOMEPAGE', true);
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// the language file
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$language_file = array ('courses', 'index');
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/* Flag forcing the 'current course' reset, as we're not inside a course anymore */
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// maybe we should change this into an api function? an example: Coursemanager::unset();
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$cidReset = true;
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/*
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-----------------------------------------------------------
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Included libraries
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-----------------------------------------------------------
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*/
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/** @todo make all the library files consistent, use filename.lib.php and not filename.lib.inc.php */
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require_once ('main/inc/global.inc.php');
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include_once (api_get_path(LIBRARY_PATH).'course.lib.php');
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include_once (api_get_path(LIBRARY_PATH).'debug.lib.inc.php');
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include_once (api_get_path(LIBRARY_PATH).'events.lib.inc.php');
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include_once (api_get_path(LIBRARY_PATH).'system_announcements.lib.php');
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include_once (api_get_path(LIBRARY_PATH).'groupmanager.lib.php');
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include_once (api_get_path(LIBRARY_PATH).'formvalidator/FormValidator.class.php');
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$loginFailed = isset($_GET['loginFailed']) ? true : isset($loginFailed);
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$setting_show_also_closed_courses = (api_get_setting('show_closed_courses')=='true') ? true : false;
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// the section (for the tabs)
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$this_section = SECTION_CAMPUS;
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/*
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-----------------------------------------------------------
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Action Handling
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-----------------------------------------------------------
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*/
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/** @todo wouldn't it make more sense if this would be done in local.inc.php so that local.inc.php become the only place where authentication is done?
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* by doing this you could logout from any page instead of only from index.php. From the moment there is a logout=true in the url you will be logged out
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* this can be usefull when you are on an open course and you need to log in to edit something and you immediately want to check how anonymous users
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* will see it.
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*/
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if (isset($_GET['action']) && $_GET['action'] == 'logout')
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{
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logout();
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}
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/*
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-----------------------------------------------------------
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Table definitions
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-----------------------------------------------------------
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*/
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$main_course_table = Database :: get_main_table(TABLE_MAIN_COURSE);
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$main_category_table = Database :: get_main_table(TABLE_MAIN_CATEGORY);
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$track_login_table = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_LOGIN);
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/*
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-----------------------------------------------------------
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Constants and CONFIGURATION parameters
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-----------------------------------------------------------
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*/
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/** @todo these configuration settings should move to the dokeos config settings */
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/** defines wether or not anonymous visitors can see a list of the courses on the Dokeos homepage that are open to the world */
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$_setting['display_courses_to_anonymous_users'] = 'true';
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/** @todo remove this piece of code because this is not used */
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if (isset ($_user['user_id']))
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{
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$nameTools = api_get_setting('siteName');
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}
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/*
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==============================================================================
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LOGIN
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==============================================================================
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*/
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/**
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* @todo This piece of code should probably move to local.inc.php where the actual login / logout procedure is handled.
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* @todo consider removing this piece of code because does nothing.
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*/
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if (isset($_GET['submitAuth']) && $_GET['submitAuth'] == 1)
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{
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// nice lie!!!
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echo 'Attempted breakin - sysadmins notified.';
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session_destroy();
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die();
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}
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/**
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* @todo This piece of code should probably move to local.inc.php where the actual login procedure is handled.
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* @todo check if this code is used. I think this code is never executed because after clicking the submit button
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* the code does the stuff in local.inc.php and then redirects to index.php or user_portal.php depending
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* on api_get_setting('page_after_login')
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*/
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if (!empty($_POST["submitAuth"]))
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{
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// the user is already authenticated, we now find the last login of the user.
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if (isset ($_user['user_id']))
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{
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$sql_last_login = "SELECT UNIX_TIMESTAMP(login_date)
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FROM $track_login_table
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WHERE login_user_id = '".$_user['user_id']."'
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ORDER BY login_date DESC LIMIT 1";
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$result_last_login = api_sql_query($sql_last_login, __FILE__, __LINE__);
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if (!$result_last_login)
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if (mysql_num_rows($result_last_login) > 0)
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{
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$user_last_login_datetime = mysql_fetch_array($result_last_login);
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$user_last_login_datetime = $user_last_login_datetime[0];
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api_session_register('user_last_login_datetime');
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}
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mysql_free_result($result_last_login);
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//event_login();
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if (api_is_platform_admin())
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{
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// decode all open event informations and fill the track_c_* tables
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include (api_get_path(LIBRARY_PATH)."stats.lib.inc.php");
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decodeOpenInfos();
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}
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}
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} // end login -- if($_POST["submitAuth"])
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else
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{
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// only if login form was not sent because if the form is sent the user was already on the page.
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event_open();
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}
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// the header
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Display :: display_header('', 'dokeos');
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/*
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==============================================================================
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MAIN CODE
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==============================================================================
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*/
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echo '<div id="maincontent">';
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// Plugins for loginpage_main AND campushomepage_main
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if (!api_get_user_id())
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{
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api_plugin('loginpage_main');
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}
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else
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{
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api_plugin('campushomepage_main');
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}
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// Including the page for the news
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$page_included = false;
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if (!empty ($_GET['include']) && preg_match('/^[a-zA-Z0-9_-]*\.html$/',$_GET['include']))
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{
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include ('./home/'.$_GET['include']);
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$page_included = true;
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}
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else
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{
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if(!empty($_SESSION['user_language_choice']))
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{
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$user_selected_language=$_SESSION['user_language_choice'];
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}
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elseif(!empty($_SESSION['_user']['language']))
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{
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$user_selected_language=$_SESSION['_user']['language'];
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}
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else
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{
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$user_selected_language=get_setting('platformLanguage');
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}
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if(!file_exists('home/home_news_'.$user_selected_language.'.html'))
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{
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$home_top_temp=file('home/home_top.html');
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$home_top_temp=implode('',$home_top_temp);
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$open=str_replace('{rel_path}',api_get_path(REL_PATH),$home_top_temp);
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echo $open;
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}
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else
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{
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if(file_exists('home/home_top_'.$user_selected_language.'.html'))
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{
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$home_top_temp = file_get_contents('home/home_top_'.$user_selected_language.'.html');
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}
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else
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{
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$home_top_temp = file_get_contents('home/home_top.html');
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}
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$open=str_replace('{rel_path}',api_get_path(REL_PATH),$home_top_temp);
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echo $open;
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}
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}
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// Display System announcements
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$announcement = isset($_GET['announcement']) ? $_GET['announcement'] : -1;
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$announcement = intval($announcement);
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if (isset($_user['user_id']))
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{
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$visibility = api_is_allowed_to_create_course() ? VISIBLE_TEACHER : VISIBLE_STUDENT;
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SystemAnnouncementManager :: display_announcements($visibility, $announcement);
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}
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else
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{
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SystemAnnouncementManager :: display_announcements(VISIBLE_GUEST, $announcement);
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}
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// Display courses and category list
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if (!$page_included)
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{
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if (api_get_setting('display_categories_on_homepage') == 'true')
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{
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echo '<div class="home_cats">';
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display_anonymous_course_list();
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echo '</div>';
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}
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}
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echo '</div>';
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// display right menu: language form, login section + useful weblinks
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echo '<div class="menu" id="menu">';
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display_anonymous_right_menu();
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echo '</div>';
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/*
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==============================================================================
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FOOTER
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==============================================================================
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*/
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Display :: display_footer();
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/**
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* This function handles the logout and is called whenever there is a $_GET['logout']
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*
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* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
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*/
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function logout()
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{
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global $_configuration, $extAuthSource;
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// variable initialisation
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$query_string='';
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if(!empty($_SESSION['user_language_choice']))
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{
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$query_string='?language='.$_SESSION['user_language_choice'];
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}
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// Database table definition
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$tbl_track_login = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_LOGIN);
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// selecting the last login of the user
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$uid = intval($_GET['uid']);
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$sql_last_connection="SELECT login_id, login_date FROM $tbl_track_login WHERE login_user_id='$uid' ORDER BY login_date DESC LIMIT 0,1";
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$q_last_connection=api_sql_query($sql_last_connection);
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if(Database::num_rows($q_last_connection)>0)
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{
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$i_id_last_connection=mysql_result($q_last_connection,0,"login_id");
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}
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if(!isset($_SESSION['login_as']))
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{
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$s_sql_update_logout_date="UPDATE $tbl_track_login SET logout_date=NOW() WHERE login_id='$i_id_last_connection'";
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api_sql_query($s_sql_update_logout_date);
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}
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LoginDelete($uid, $_configuration['statistics_database']); //from inc/lib/online.inc.php - removes the "online" status
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//the following code enables the use of an external logout function.
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//example: define a $extAuthSource['ldap']['logout']="file.php" in configuration.php
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// then a function called ldap_logout() inside that file
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// (using *authent_name*_logout as the function name) and the following code
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// will find and execute it
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$uinfo = api_get_user_info($uid);
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if(($uinfo['auth_source'] != PLATFORM_AUTH_SOURCE) && is_array($extAuthSource))
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{
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if(is_array($extAuthSource[$uinfo['auth_source']]))
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{
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$subarray = $extAuthSource[$uinfo['auth_source']];
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if(!empty($subarray['logout']) && file_exists($subarray['logout']))
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{
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include_once($subarray['logout']);
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$logout_function = $uinfo['auth_source'].'_logout';
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if(function_exists($logout_function))
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{
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$logout_function($uinfo);
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}
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}
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}
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}
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api_session_destroy();
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header("Location: index.php$query_string");
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exit();
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}
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/**
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* This function checks if there are courses that are open to the world in the platform course categories (=faculties)
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*
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* @param unknown_type $category
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* @return boolean
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*/
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function category_has_open_courses($category)
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{
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global $setting_show_also_closed_courses;
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$user_identified = (api_get_user_id()>0 && !api_is_anonymous());
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$main_course_table = Database :: get_main_table(TABLE_MAIN_COURSE);
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$sql_query = "SELECT * FROM $main_course_table WHERE category_code='$category'";
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$sql_result = api_sql_query($sql_query, __FILE__, __LINE__);
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while ($course = mysql_fetch_array($sql_result))
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{
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if ($setting_show_also_closed_courses == false)
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{
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if((api_get_user_id()>0
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and $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM)
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or ($course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD))
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{
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return true; //at least one open course
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}
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}
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else
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{
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if(isset($course['visibility']))
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{
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return true; //at least one course (does not matter weither it's open or not because $setting_show_also_closed_courses = true
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}
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}
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}
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return false;
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}
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function display_create_course_link()
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{
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echo "<li><a href=\"main/create_course/add_course.php\">".get_lang("CourseCreate")."</a></li>";
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}
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function display_edit_course_list_links()
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{
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echo "<li><a href=\"main/auth/courses.php\">".get_lang("CourseManagement")."</a></li>";
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}
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/**
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* Displays the right-hand menu for anonymous users:
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* login form, useful links, help section
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* Warning: function defines globals
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* @version 1.0.1
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* @todo does $_plugins need to be global?
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*/
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function display_anonymous_right_menu()
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{
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global $loginFailed, $_plugins, $_user, $menu_navigation;
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$platformLanguage = api_get_setting('platformLanguage');
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if ( !($_user['user_id']) or api_is_anonymous($_user['user_id']) ) // only display if the user isn't logged in
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{
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api_display_language_form(true);
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echo '<br />';
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display_login_form();
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if ($loginFailed)
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{
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handle_login_failed();
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}
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if (api_get_setting('allow_lostpassword') == 'true' OR api_get_setting('allow_registration') == 'true')
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{
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echo '<div class="menusection"><span class="menusectioncaption">'.get_lang('MenuUser').'</span><ul class="menulist">';
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if (get_setting('allow_registration') <> 'false')
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{
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echo '<li><a href="main/auth/inscription.php">'.get_lang('Reg').'</a></li>';
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}
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if (get_setting('allow_lostpassword') == 'true')
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{
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display_lost_password_info();
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}
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echo '</ul></div>';
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}
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if(api_number_of_plugins('loginpage_menu') > 0)
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{
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echo '<div class="note">';
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api_plugin('loginpage_menu');
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echo '</div>';
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}
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}
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/*** hide right menu "general" and other parts on anonymous right menu *****/
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echo "<div class=\"menusection\">", "<span class=\"menusectioncaption\">".get_lang("MenuGeneral")."</span>";
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echo "<ul class=\"menulist\">";
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$user_selected_language = api_get_interface_language();
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if (!isset ($user_selected_language))
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$user_selected_language = $platformLanguage;
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if(!file_exists('home/home_menu_'.$user_selected_language.'.html'))
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{
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include ('home/home_menu.html');
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}
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else
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{
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include('home/home_menu_'.$user_selected_language.'.html');
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}
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echo '</ul>';
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echo '</div>';
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if ($_user['user_id'] && api_number_of_plugins('campushomepage_menu') > 0)
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{
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echo '<div class="note">';
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api_plugin('campushomepage_menu');
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echo '</div>';
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}
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/**
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* User section
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*/
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if(isset($_SESSION['_user']['user_id']) && $_SESSION['_user']['user_id']!=0)
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{
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// tabs that are deactivated are added here
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if (!empty($menu_navigation))
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{
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echo "<div class=\"menusection\">";
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echo "<span class=\"menusectioncaption\">".get_lang("MainNavigation")."</span>";
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echo "<ul class=\"menulist\">";
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foreach($menu_navigation as $section => $navigation_info)
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{
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$current = ($section == $GLOBALS['this_section'] ? ' id="current"' : '');
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echo '<li'.$current.'>';
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echo '<a href="'.$navigation_info['url'].'" target="_top">'.$navigation_info['title'].'</a>';
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echo '</li>';
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echo "\n";
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}
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echo "</ul>";
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echo '</div>';
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}
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echo "<div class=\"menusection\">";
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echo "<span class=\"menusectioncaption\">".get_lang("MenuUser")."</span>";
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echo "<ul class=\"menulist\">";
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$display_add_course_link = api_is_allowed_to_create_course() && ($_SESSION["studentview"] != "studentenview");
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if ($display_add_course_link)
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display_create_course_link();
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display_edit_course_list_links();
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echo "</ul>";
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echo "</div>";
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}
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// includes for any files to be displayed below anonymous right menu
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if(!file_exists('home/home_notice_'.$user_selected_language.'.html') && file_get_contents('home/home_notice.html')!='')
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{
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echo '<div class="note">';
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include ('home/home_notice.html');
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echo '</div>';
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}
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elseif(file_exists('home/home_notice_'.$user_selected_language.'.html') && file_get_contents('home/home_notice_'.$user_selected_language.'.html')!='')
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{
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echo '<div class="note">';
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include('home/home_notice_'.$user_selected_language.'.html');
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|
echo '</div>';
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
/**
|
|
* Reacts on a failed login:
|
|
* displays an explanation with
|
|
* a link to the registration form.
|
|
*
|
|
* @version 1.0.1
|
|
*/
|
|
function handle_login_failed()
|
|
{
|
|
if(!isset($_GET['error']))
|
|
{
|
|
$message = get_lang("InvalidId");
|
|
if (api_is_self_registration_allowed())
|
|
{
|
|
$message = get_lang("InvalidForSelfRegistration");
|
|
}
|
|
}
|
|
else
|
|
{
|
|
switch ($_GET['error'])
|
|
{
|
|
case '':
|
|
$message = get_lang("InvalidId");
|
|
if (api_is_self_registration_allowed())
|
|
{
|
|
$message = get_lang("InvalidForSelfRegistration");
|
|
}
|
|
break;
|
|
case 'account_expired':
|
|
$message=get_lang('AccountExpired');
|
|
break;
|
|
case 'account_inactive':
|
|
$message=get_lang('AccountInactive');
|
|
break;
|
|
case 'user_password_incorrect':
|
|
$message=get_lang('InvalidId');
|
|
break;
|
|
}
|
|
}
|
|
echo "<div id=\"login_fail\">".$message."</div>";
|
|
}
|
|
|
|
/**
|
|
* Adds a form to let users login
|
|
* @version 1.1
|
|
*/
|
|
function display_login_form()
|
|
{
|
|
$form = new FormValidator('formLogin');
|
|
$form->addElement('text','login',get_lang('UserName'),array('size'=>15));
|
|
$form->addElement('password','password',get_lang('Pass'),array('size'=>15));
|
|
$form->addElement('submit','submitAuth',get_lang('Ok'));
|
|
$renderer =& $form->defaultRenderer();
|
|
$renderer->setElementTemplate('<div><label>{label}</label></div><div>{element}</div>');
|
|
$form->display();
|
|
if(api_get_setting('openid_authentication')=='true')
|
|
{
|
|
include_once('main/auth/openid/login.php');
|
|
echo '<div>'.openid_form().'</div>';
|
|
}
|
|
}
|
|
/**
|
|
* Displays a link to the lost password section
|
|
*/
|
|
function display_lost_password_info()
|
|
{
|
|
echo "<li><a href=\"main/auth/lostPassword.php\">".get_lang("LostPassword")."</a></li>";
|
|
}
|
|
|
|
/**
|
|
* Display list of courses in a category.
|
|
* (for anonymous users)
|
|
*
|
|
* @version 1.1
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University - refactoring and code cleaning
|
|
*/
|
|
function display_anonymous_course_list()
|
|
{
|
|
$ctok = $_SESSION['sec_token'];
|
|
$stok = Security::get_token();
|
|
|
|
//init
|
|
$user_identified = (api_get_user_id()>0 && !api_is_anonymous());
|
|
$web_course_path = api_get_path(WEB_COURSE_PATH);
|
|
$category = $_GET["category"];
|
|
global $setting_show_also_closed_courses;
|
|
|
|
// Database table definitions
|
|
$main_course_table = Database :: get_main_table(TABLE_MAIN_COURSE);
|
|
$main_category_table = Database :: get_main_table(TABLE_MAIN_CATEGORY);
|
|
|
|
$platformLanguage = api_get_setting('platformLanguage');
|
|
|
|
//get list of courses in category $category
|
|
$sql_get_course_list = "SELECT * FROM $main_course_table cours
|
|
WHERE category_code = '".mysql_real_escape_string($_GET["category"])."'
|
|
ORDER BY title, UPPER(visual_code)";
|
|
//removed: AND cours.visibility='".COURSE_VISIBILITY_OPEN_WORLD."'
|
|
$sql_result_courses = api_sql_query($sql_get_course_list, __FILE__, __LINE__);
|
|
|
|
while ($course_result = mysql_fetch_array($sql_result_courses))
|
|
{
|
|
$course_list[] = $course_result;
|
|
}
|
|
|
|
$platform_visible_courses = '';
|
|
// $setting_show_also_closed_courses
|
|
if($user_identified)
|
|
{
|
|
if ($setting_show_also_closed_courses)
|
|
{
|
|
$platform_visible_courses = '';
|
|
}
|
|
else
|
|
{
|
|
$platform_visible_courses = " AND (t3.visibility='".COURSE_VISIBILITY_OPEN_WORLD."' OR t3.visibility='".COURSE_VISIBILITY_OPEN_PLATFORM."' )";
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if ($setting_show_also_closed_courses)
|
|
{
|
|
$platform_visible_courses = '';
|
|
}
|
|
else
|
|
{
|
|
$platform_visible_courses = " AND (t3.visibility='".COURSE_VISIBILITY_OPEN_WORLD."' )";
|
|
}
|
|
}
|
|
$sqlGetSubCatList = "
|
|
SELECT t1.name,t1.code,t1.parent_id,t1.children_count,COUNT(DISTINCT t3.code) AS nbCourse
|
|
FROM $main_category_table t1
|
|
LEFT JOIN $main_category_table t2 ON t1.code=t2.parent_id
|
|
LEFT JOIN $main_course_table t3 ON (t3.category_code=t1.code $platform_visible_courses)
|
|
WHERE t1.parent_id ". (empty ($category) ? "IS NULL" : "='$category'")."
|
|
GROUP BY t1.name,t1.code,t1.parent_id,t1.children_count ORDER BY t1.tree_pos, t1.name";
|
|
$resCats = api_sql_query($sqlGetSubCatList, __FILE__, __LINE__);
|
|
$thereIsSubCat = false;
|
|
if (mysql_num_rows($resCats) > 0)
|
|
{
|
|
$htmlListCat = "<h4>".get_lang("CatList")."</h4>"."<ul>";
|
|
while ($catLine = mysql_fetch_array($resCats))
|
|
{
|
|
if ($catLine['code'] != $category)
|
|
{
|
|
|
|
$category_has_open_courses = category_has_open_courses($catLine['code']);
|
|
if ($category_has_open_courses)
|
|
{
|
|
//the category contains courses accessible to anonymous visitors
|
|
$htmlListCat .= "<li>";
|
|
$htmlListCat .= "<a href=\"".api_get_self()."?category=".$catLine['code']."\">".$catLine['name']."</a>";
|
|
if (api_get_setting('show_number_of_courses') == 'true')
|
|
{
|
|
$htmlListCat .= " (".$catLine['nbCourse']." ".get_lang("Courses").")";
|
|
}
|
|
$htmlListCat .= "</li>\n";
|
|
$thereIsSubCat = true;
|
|
}
|
|
elseif ($catLine['children_count'] > 0)
|
|
{
|
|
//the category has children, subcategories
|
|
$htmlListCat .= "<li>";
|
|
$htmlListCat .= "<a href=\"".api_get_self()."?category=".$catLine['code']."\">".$catLine['name']."</a>";
|
|
$htmlListCat .= "</li>\n";
|
|
$thereIsSubCat = true;
|
|
}
|
|
/************************************************************************
|
|
end changed code to eliminate the (0 courses) after empty categories
|
|
************************************************************************/
|
|
elseif (api_get_setting('show_empty_course_categories') == 'true')
|
|
{
|
|
$htmlListCat .= "<li>";
|
|
$htmlListCat .= $catLine['name'];
|
|
$htmlListCat .= "</li>\n";
|
|
$thereIsSubCat = true;
|
|
}//else don't set thereIsSubCat to true to avoid printing things if not requested
|
|
}
|
|
else
|
|
{
|
|
$htmlTitre = "<p>";
|
|
if (api_get_setting('show_back_link_on_top_of_tree') == 'true')
|
|
{
|
|
$htmlTitre .= "<a href=\"".api_get_self()."\">"."<< ".get_lang("BackToHomePage")."</a>";
|
|
}
|
|
if (!is_null($catLine['parent_id']) || (api_get_setting('show_back_link_on_top_of_tree') <> 'true' && !is_null($catLine['code'])))
|
|
{
|
|
$htmlTitre .= "<a href=\"".api_get_self()."?category=".$catLine['parent_id']."\">"."<< ".get_lang("Up")."</a>";
|
|
}
|
|
$htmlTitre .= "</p>\n";
|
|
if ($category != "" && !is_null($catLine['code']))
|
|
{
|
|
$htmlTitre .= "<h3>".$catLine['name']."</h3>\n";
|
|
}
|
|
else
|
|
{
|
|
$htmlTitre .= "<h3>".get_lang("Categories")."</h3>\n";
|
|
}
|
|
}
|
|
}
|
|
$htmlListCat .= "</ul>\n";
|
|
}
|
|
echo $htmlTitre;
|
|
if ($thereIsSubCat)
|
|
{
|
|
echo $htmlListCat;
|
|
}
|
|
while ($categoryName = mysql_fetch_array($resCats))
|
|
{
|
|
echo "<h3>", $categoryName['name'], "</h3>\n";
|
|
}
|
|
$numrows = mysql_num_rows($sql_result_courses);
|
|
$courses_list_string = '';
|
|
$courses_shown = 0;
|
|
if ($numrows > 0)
|
|
{
|
|
if ($thereIsSubCat)
|
|
{
|
|
$courses_list_string .= "<hr size=\"1\" noshade=\"noshade\">\n";
|
|
}
|
|
$courses_list_string .= "<h4>".get_lang("CourseList")."</h4>\n"."<ul>\n";
|
|
|
|
if (api_get_user_id())
|
|
{
|
|
$courses_of_user = get_courses_of_user(api_get_user_id());
|
|
}
|
|
|
|
foreach ($course_list AS $course)
|
|
{
|
|
// $setting_show_also_closed_courses
|
|
|
|
if ($setting_show_also_closed_courses==false)
|
|
{
|
|
// if we do not show the closed courses
|
|
// we only show the courses that are open to the world (to everybody)
|
|
// and the courses that are open to the platform (if the current user is a registered user
|
|
if( ($user_identified && $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM) OR ($course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD))
|
|
{
|
|
$courses_shown++;
|
|
$courses_list_string .= "<li>\n";
|
|
$courses_list_string .= "<a href=\"".$web_course_path.$course['directory']."/\">".$course['title']."</a><br />";
|
|
if (get_setting("display_coursecode_in_courselist") == "true")
|
|
{
|
|
$courses_list_string .= $course['visual_code'];
|
|
}
|
|
if (get_setting("display_coursecode_in_courselist") == "true" AND get_setting("display_teacher_in_courselist") == "true")
|
|
{
|
|
$courses_list_string .= " - ";
|
|
}
|
|
if (get_setting("display_teacher_in_courselist") == "true")
|
|
{
|
|
$courses_list_string .= $course['tutor_name'];
|
|
}
|
|
if (api_get_setting('show_different_course_language') == 'true' && $course['course_language'] <> api_get_setting('platformLanguage'))
|
|
{
|
|
$courses_list_string .= ' - '.$course['course_language'];
|
|
}
|
|
$courses_list_string .= "</li>\n";
|
|
}
|
|
}
|
|
// we DO show the closed courses.
|
|
// the course is accessible if (link to the course homepage)
|
|
// 1. the course is open to the world (doesn't matter if the user is logged in or not): $course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD)
|
|
// 2. the user is logged in and the course is open to the world or open to the platform: ($user_identified && $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM)
|
|
// 3. the user is logged in and the user is subscribed to the course and the course visibility is not COURSE_VISIBILITY_CLOSED
|
|
// 4. the user is logged in and the user is course admin of te course (regardless of the course visibility setting)
|
|
// 5. the user is the platform admin api_is_platform_admin()
|
|
//
|
|
else
|
|
{
|
|
$courses_shown++;
|
|
$courses_list_string .= "<li>\n";
|
|
if( $course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD
|
|
OR ($user_identified AND $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM)
|
|
OR ($user_identified AND key_exists($course['code'],$courses_of_user) AND $course['visibility'] <> COURSE_VISIBILITY_CLOSED)
|
|
OR $courses_of_user[$course['code']]['status'] == '1'
|
|
OR api_is_platform_admin())
|
|
{
|
|
$courses_list_string .= "<a href=\"".$web_course_path.$course['directory']."/\">";
|
|
}
|
|
$courses_list_string .= $course['title'];
|
|
if( $course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD
|
|
OR ($user_identified AND $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM)
|
|
OR ($user_identified AND key_exists($course['code'],$courses_of_user) AND $course['visibility'] <> COURSE_VISIBILITY_CLOSED)
|
|
OR $courses_of_user[$course['code']]['status'] == '1'
|
|
OR api_is_platform_admin())
|
|
{
|
|
$courses_list_string .="</a><br />";
|
|
}
|
|
if (get_setting("display_coursecode_in_courselist") == "true")
|
|
{
|
|
$courses_list_string .= $course['visual_code'];
|
|
}
|
|
if (get_setting("display_coursecode_in_courselist") == "true" AND get_setting("display_teacher_in_courselist") == "true")
|
|
{
|
|
$courses_list_string .= " - ";
|
|
}
|
|
if (get_setting("display_teacher_in_courselist") == "true")
|
|
{
|
|
$courses_list_string .= $course['tutor_name'];
|
|
}
|
|
if (api_get_setting('show_different_course_language') == 'true' && $course['course_language'] <> api_get_setting('platformLanguage'))
|
|
{
|
|
$courses_list_string .= ' - '.$course['course_language'];
|
|
}
|
|
if (api_get_setting('show_different_course_language') == 'true' && $course['course_language'] <> api_get_setting('platformLanguage'))
|
|
{
|
|
$courses_list_string .= ' - '.$course['course_language'];
|
|
}
|
|
// We display a subscription link if
|
|
// 1. it is allowed to register for the course and if the course is not already in the courselist of the user and if the user is identiefied
|
|
// 2
|
|
if ($user_identified AND !key_exists($course['code'],$courses_of_user))
|
|
{
|
|
if ($course['subscribe'] == '1')
|
|
{
|
|
$courses_list_string .= "<form action=\"main/auth/courses.php?action=subscribe&category=".$_GET['category']."\" method=\"post\">";
|
|
$courses_list_string .= '<input type="hidden" name="sec_token" value="'.$stok.'">';
|
|
$courses_list_string .= "<input type=\"hidden\" name=\"subscribe\" value=\"".$course['code']."\" />";
|
|
$courses_list_string .= "<input type=\"image\" name=\"unsub\" src=\"main/img/enroll.gif\" alt=\"".get_lang("Subscribe")."\" />".get_lang("Subscribe")."</form>";
|
|
}
|
|
else
|
|
{
|
|
$courses_list_string .= '<br />'.get_lang("SubscribingNotAllowed");
|
|
}
|
|
}
|
|
$courses_list_string .= "</li>\n";
|
|
}
|
|
}
|
|
$courses_list_string .= "</ul>\n";
|
|
}
|
|
else
|
|
{
|
|
// echo "<blockquote>",get_lang('_No_course_publicly_available'),"</blockquote>\n";
|
|
}
|
|
if($courses_shown > 0)
|
|
{ //only display the list of courses and categories if there was more than
|
|
// 0 courses visible to the world (we're in the anonymous list here)
|
|
echo $courses_list_string;
|
|
}
|
|
if ($category != "")
|
|
{
|
|
echo "<p>", "<a href=\"".api_get_self()."\"><b><<</b> ", get_lang("BackToHomePage"), "</a>", "</p>\n";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* retrieves all the courses that the user has already subscribed to
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University, Belgium
|
|
* @param int $user_id: the id of the user
|
|
* @return array an array containing all the information of the courses of the given user
|
|
*/
|
|
function get_courses_of_user($user_id)
|
|
{
|
|
$table_course = Database::get_main_table(TABLE_MAIN_COURSE);
|
|
$table_course_user = Database::get_main_table(TABLE_MAIN_COURSE_USER);
|
|
|
|
// Secondly we select the courses that are in a category (user_course_cat<>0) and sort these according to the sort of the category
|
|
$user_id = intval($user_id);
|
|
$sql_select_courses="SELECT course.code k, course.visual_code vc, course.subscribe subscr, course.unsubscribe unsubscr,
|
|
course.title i, course.tutor_name t, course.db_name db, course.directory dir, course_rel_user.status status,
|
|
course_rel_user.sort sort, course_rel_user.user_course_cat user_course_cat
|
|
FROM $table_course course,
|
|
$table_course_user course_rel_user
|
|
WHERE course.code = course_rel_user.course_code
|
|
AND course_rel_user.user_id = '".$user_id."'
|
|
ORDER BY course_rel_user.sort ASC";
|
|
$result = api_sql_query($sql_select_courses,__FILE__,__LINE__);
|
|
while ($row=Database::fetch_array($result))
|
|
{
|
|
// we only need the database name of the course
|
|
$courses[$row['k']] = array("db"=> $row['db'], "code" => $row['k'], "visual_code" => $row['vc'], "title" => $row['i'], "directory" => $row['dir'], "status" => $row['status'], "tutor" => $row['t'], "subscribe" => $row['subscr'], "unsubscribe" => $row['unsubscr'], "sort" => $row['sort'], "user_course_category" => $row['user_course_cat']);
|
|
}
|
|
return $courses;
|
|
}
|
|
?>
|
|
|