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1247 lines
49 KiB
1247 lines
49 KiB
<?php
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/* For licensing terms, see /dokeos_license.txt */
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/**
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==============================================================================
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* @package dokeos.auth
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* @todo check if unsubscribing from a course WITH group memberships works as it should
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* @todo constants are in uppercase, variables aren't
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==============================================================================
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*/
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/*
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==============================================================================
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INIT SECTION
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==============================================================================
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*/
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// name of the language file that needs to be included
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$language_file = array ('courses','registration');
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//delete the globals["_cid"] we don't need it here
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$cidReset = true; // Flag forcing the 'current course' reset
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// including the global file
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include('../inc/global.inc.php');
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if (api_get_setting('show_courses_descriptions_in_catalog') == 'true') {
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// additional html (javascript and style css)
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$htmlHeadXtra[] = '<script type="text/javascript">' .
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'var GB_ROOT_DIR = "'.api_get_path(WEB_LIBRARY_PATH).'javascript/greybox/"' .
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'</script>';
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$htmlHeadXtra[] = '<script src="'.api_get_path(WEB_LIBRARY_PATH).'javascript/jquery.js" type="text/javascript" language="javascript"></script>';
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$htmlHeadXtra[] = '<script src="'.api_get_path(WEB_LIBRARY_PATH).'javascript/greybox/AJS.js" type="text/javascript" language="javascript"></script>';
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$htmlHeadXtra[] = '<script src="'.api_get_path(WEB_LIBRARY_PATH).'javascript/greybox/AJS_fx.js" type="text/javascript" language="javascript"></script>';
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$htmlHeadXtra[] = '<script src="'.api_get_path(WEB_LIBRARY_PATH).'javascript/greybox/gb_scripts.js" type="text/javascript" language="javascript"></script>';
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$htmlHeadXtra[] = '<link href="'.api_get_path(WEB_LIBRARY_PATH).'javascript/greybox/gb_styles.css" rel="stylesheet" type="text/css" />';
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}
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// section for the tabs
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$this_section=SECTION_COURSES;
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// acces rights: anonymous users can't do anything usefull here
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api_block_anonymous_users();
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if (!(api_is_platform_admin() || api_is_course_admin() || api_is_allowed_to_create_course())) {
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if (api_get_setting('allow_students_to_browse_courses')=='false') {
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api_not_allowed();
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}
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}
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// include additional libraries
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include_once(api_get_path(LIBRARY_PATH) . 'debug.lib.inc.php');
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include_once(api_get_path(LIBRARY_PATH) . 'course.lib.php');
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require_once(api_get_path(INCLUDE_PATH).'lib/mail.lib.inc.php');
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$ctok = $_SESSION['sec_token'];
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$stok = Security::get_token();
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// Database table definitions
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$tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
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$tbl_courses_nodes = Database::get_main_table(TABLE_MAIN_CATEGORY);
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$tbl_courseUser = Database::get_main_table(TABLE_MAIN_COURSE_USER);
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$tbl_user = Database::get_main_table(TABLE_MAIN_USER);
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//filter
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$safe = array();
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$safe['action'] = '';
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$actions = array('sortmycourses','createcoursecategory','subscribe','deletecoursecategory','unsubscribe');
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if(in_array(htmlentities($_GET['action']),$actions)) {
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$safe['action'] = htmlentities($_GET['action']);
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}
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// title of the page
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if ($safe['action'] == 'sortmycourses' OR !isset($safe['action'])) {
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$nameTools = get_lang('SortMyCourses');
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}
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if ($safe['action'] == 'createcoursecategory')
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{
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$nameTools = get_lang('CreateCourseCategory');
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}
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if ($safe['action'] == 'subscribe')
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{
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$nameTools = get_lang('SubscribeToCourse');
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}
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// breadcrumbs
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$interbreadcrumb[] = array('url'=>api_get_path(WEB_PATH).'user_portal.php', 'name'=> get_lang('MyCourses'));
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if (empty($nameTools)) {
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$nameTools=get_lang('CourseManagement');
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}
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else
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{
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$interbreadcrumb[] = array('url'=>api_get_path(WEB_PATH).'main/auth/courses.php', 'name'=> get_lang('CourseManagement'));
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}
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// Displaying the header
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Display::display_header($nameTools);
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/*
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==============================================================================
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COMMANDS SECTION
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==============================================================================
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*/
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unset($message);
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// we are moving a course or category of the user up/down the list (=Sort My Courses)
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if (isset($_GET['move']))
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{
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if (isset($_GET['course']))
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{
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if($ctok == $_GET['sec_token'])
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{
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$message=move_course($_GET['move'], $_GET['course'],$_GET['category']);
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}
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}
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if (isset($_GET['category']) and !$_GET['course'])
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{
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if($ctok == $_GET['sec_token'])
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{
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$message=move_category($_GET['move'], $_GET['category']);
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}
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}
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}
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// we are moving the course of the user to a different user defined course category (=Sort My Courses)
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if (isset($_POST['submit_change_course_category']))
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{
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if($ctok == $_POST['sec_token'])
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{
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$message=store_changecoursecategory($_POST['course_2_edit_category'], $_POST['course_categories']);
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}
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}
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// we are creating a new user defined course category (= Create Course Category)
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if (isset($_POST['create_course_category']) AND isset($_POST['title_course_category']) AND strlen(trim($_POST['title_course_category'])) > 0)
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{
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if($ctok == $_POST['sec_token'])
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{
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$message=store_course_category();
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}
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}
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if (isset($_POST['submit_edit_course_category']) AND isset($_POST['title_course_category']) AND strlen(trim($_POST['title_course_category'])) > 0)
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{
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if($ctok == $_POST['sec_token'])
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{
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$message=store_edit_course_category();
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}
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}
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// we are subcribing to a course (=Subscribe to course)
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if (isset($_POST['subscribe']))
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{
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if($ctok == $_POST['sec_token'])
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{
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$message = subscribe_user($_POST['subscribe']);
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}
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}
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// we are unsubscribing from a course (=Unsubscribe from course)
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if (isset($_POST['unsubscribe']))
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{
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if($ctok == $_POST['sec_token'])
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{
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$message=remove_user_from_course($_user['user_id'], $_POST['unsubscribe']);
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}
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}
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// we are deleting a course category
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if ($safe['action']=='deletecoursecategory' AND isset($_GET['id']))
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{
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if($ctok == $_GET['sec_token'])
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{
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$get_id_cat=Security::remove_XSS($_GET['id']);
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$message=delete_course_category($get_id_cat);
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}
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}
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/*
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==============================================================================
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DISPLAY SECTION
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==============================================================================
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*/
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// Diplaying the tool title
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// api_display_tool_title($nameTools);
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// we are displaying any result messages;
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if (isset($message))
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{
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Display::display_confirmation_message($message, false);
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}
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// The menu with the different options in the course management
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echo "<div id=\"actions\" class='actions'>";
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if ($safe['action'] <> 'sortmycourses' AND isset($safe['action'])) {
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echo " <a href=\"".api_get_self()."?action=sortmycourses\">".Display::return_icon('deplacer_fichier.gif', get_lang("SortMyCourses")).' '.get_lang("SortMyCourses")."</a> ";
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} else {
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echo ' <b>'.Display::return_icon('deplacer_fichier.gif', get_lang('SortMyCourses')).' '.get_lang('SortMyCourses').'</b> ';
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}
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echo ' ';
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if ($safe['action']<>'createcoursecategory') {
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echo " <a href=\"".api_get_self()."?action=createcoursecategory\">".Display::return_icon('folder_new.gif', get_lang("CreateCourseCategory")).' '.get_lang("CreateCourseCategory")."</a> ";
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} else {
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echo ' <b>'.Display::return_icon('folder_new.gif', get_lang("CreateCourseCategory")).' '.get_lang('CreateCourseCategory').'</b> ';
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}
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echo ' ';
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if ($safe['action']<>'subscribe') {
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echo " <a href=\"".api_get_self()."?action=subscribe\">".Display::return_icon('view_more_stats.gif', get_lang("SubscribeToCourse")).' '.get_lang("SubscribeToCourse")."</a> ";
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} else {
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echo ' <b>'.Display::return_icon('view_more_stats.gif', get_lang("SubscribeToCourse")).' '.get_lang("SubscribeToCourse").'</b> ';
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}
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echo "</div>";
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echo "<div>";
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switch ($safe['action'])
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{
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case 'subscribe':
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//api_display_tool_title(get_lang('SubscribeToCourse'));
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courses_subscribing();
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break;
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case 'unsubscribe':
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//api_display_tool_title(get_lang('UnsubscribeFromCourse'));
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$user_courses=get_courses_of_user($_user['user_id']);
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display_courses($_user['user_id'], true, $user_courses);
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break;
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case 'createcoursecategory':
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//api_display_tool_title(get_lang('CreateCourseCategory'));
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display_create_course_category_form();
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break;
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case 'deletecoursecategory':
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case 'sortmycourses':
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default:
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//api_display_tool_title(get_lang('SortMyCourses'));
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$user_courses=get_courses_of_user($_user['user_id']);
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display_courses($_user['user_id'], true, $user_courses);
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break;
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}
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echo '</div>';
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Display :: display_footer();
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/*
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==============================================================================
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FUNCTIONS
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==============================================================================
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*/
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/**
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* Subscribe the user to a given course
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* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
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* @param string $course_code the code of the course the user wants to subscribe to
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* @return string we return the message that is displayed when the action is succesfull
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*/
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function subscribe_user($course_code)
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{
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global $_user, $stok;
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$all_course_information = CourseManager::get_course_information($course_code);
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if ($all_course_information['registration_code']=='' OR $_POST['course_registration_code']==$all_course_information['registration_code'])
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{
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if (api_is_platform_admin()) {
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$status_user_in_new_course=COURSEMANAGER;
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} else {
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$status_user_in_new_course=null;
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}
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if (CourseManager::add_user_to_course($_user['user_id'], $course_code,$status_user_in_new_course))
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{
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$send = api_get_course_setting('email_alert_to_teacher_on_new_user_in_course',$course_code);
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if ($send == 1) {
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CourseManager::email_to_tutor($_user['user_id'],$course_code,$send_to_tutor_also=false);
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} else if ($send == 2){
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CourseManager::email_to_tutor($_user['user_id'],$course_code,$send_to_tutor_also=true);
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}
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return get_lang('EnrollToCourseSuccessful');
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}
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else
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{
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return get_lang('ErrorContactPlatformAdmin');
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}
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}
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else
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{
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$return='';
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if (isset($_POST['course_registration_code']) AND $_POST['course_registration_code']<>$all_course_information['registration_code'])
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{
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Display::display_error_message(get_lang('CourseRegistrationCodeIncorrect'));
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}
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$return.=get_lang('CourseRequiresPassword').'<br/>';
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$return.=$all_course_information['visual_code'].' - '.$all_course_information['title'];
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$return.="<form action=\"".$_SERVER["REQUEST_URI"]."\" method=\"post\">";
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$return.='<input type="hidden" name="sec_token" value="'.$stok.'" />';
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$return.="<input type=\"hidden\" name=\"subscribe\" value=\"".$all_course_information['code']."\" />";
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$return.="<input type=\"text\" name=\"course_registration_code\" value=\"".$_POST['course_registration_code']."\" />";
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$return.="<input type=\"Submit\" name=\"submit_course_registration_code\" value=\"OK\" alt=\"".get_lang("SubmitRegistrationCode")."\" /></form>";
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return $return;
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}
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}
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/**
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* unsubscribe the user from a given course
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* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
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* @param int $user_id The user id of the user that is performing the unsubscribe action
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* @param string $course_code the course code of the course the user wants to unsubscribe from
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* @return string we return the message that is displayed when the action is succesfull
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*/
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function remove_user_from_course($user_id, $course_code)
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{
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$tbl_course_user = Database::get_main_table(TABLE_MAIN_COURSE_USER);
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// we check (once again) if the user is not course administrator
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// because the course administrator cannot unsubscribe himself
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// (s)he can only delete the course
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$sql_check="SELECT * FROM $tbl_course_user WHERE user_id='".$user_id."' AND course_code='".$course_code."' AND status='1'";
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$result_check=Database::query($sql_check,__FILE__,__LINE__);
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$number_of_rows=Database::num_rows($result_check);
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if ($number_of_rows>0)
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{return false;}
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else
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{
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CourseManager::unsubscribe_user($user_id,$course_code);
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return get_lang("YouAreNowUnsubscribed");
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}
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}
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/**
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* handles the display of the courses to which the user can subscribe
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* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
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*/
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function courses_subscribing()
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{
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browse_courses();
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display_search_courses();
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}
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/**
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* Allows you to browse through the course categories (faculties) and subscribe to the courses of
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* this category (faculty)
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* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
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*/
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function browse_courses()
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{
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browse_course_categories();
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if (!isset($_POST['search_course']))
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{
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browse_courses_in_category();
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}
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}
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/**
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* Counts the number of courses in a given course category
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*/
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function count_courses_in_category($category)
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{
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$tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
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$sql="SELECT * FROM $tbl_course WHERE category_code".(empty($category)?" IS NULL":"='".$category."'");
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//showing only the courses of the current Dokeos access_url_id
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global $_configuration;
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if ($_configuration['multiple_access_urls']==true) {
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$url_access_id = api_get_current_access_url_id();
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if ($url_access_id !=-1) {
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$tbl_url_rel_course = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
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$sql="SELECT * FROM $tbl_course as course INNER JOIN $tbl_url_rel_course as url_rel_course
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ON (url_rel_course.course_code=course.code)
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WHERE access_url_id = $url_access_id AND category_code".(empty($category)?" IS NULL":"='".$category."'");
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}
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}
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$result=Database::query($sql,__FILE__,__LINE__);
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return Database::num_rows($result);
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}
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/**
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* displays the browsing of the course categories (faculties)
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* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
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* @return HTML code containing a list with all the categories and subcategories and the navigation to go one category up(if needed)
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*/
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function browse_course_categories()
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{
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global $stok;
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$tbl_courses_nodes = Database::get_main_table(TABLE_MAIN_CATEGORY);
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$category = Database::escape_string($_GET['category']);
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$safe_url_categ = Security::remove_XSS($_GET['category']);
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echo "<p><b>".get_lang('CourseCategories')."</b>";
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$sql= "SELECT * FROM $tbl_courses_nodes WHERE parent_id ".(empty($category)?"IS NULL":"='".$category."'")." GROUP BY code, parent_id ORDER BY tree_pos ASC";
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$result=Database::query($sql,__FILE__,__LINE__);
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echo "<ul>";
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while ($row=Database::fetch_array($result)) {
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$count_courses_in_categ = count_courses_in_category($row['code']);
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if ($row['children_count'] > 0 OR $count_courses_in_categ>0) {
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echo "<li><a href=\"".api_get_self()."?action=subscribe&category=".$row['code']."&up=".$safe_url_categ."&sec_token=".$stok."\">".$row['name']."</a>".
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" (".$count_courses_in_categ.")</li>";
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} elseif ($row['nbChilds'] > 0) {
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echo "<li><a href=\"".api_get_self()."?action=subscribe&category=".$row['code']."&up=".$safe_url_categ."&sec_token=".$stok."\">".$row['name']."</a></li>";
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} else {
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echo "<li>".$row['name']."</li>";
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}
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}
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echo "</ul>";
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if ($_GET['category']) {
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echo "<a href=\"".api_get_self()."?action=subscribe&category=".Security::remove_XSS($_GET['up'])."&sec_token=".$stok."\">".Display::return_icon('back.png',get_lang('UpOneCategory'),array('align'=>'absmiddle')).get_lang('UpOneCategory')."</a>";
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}
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}
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/**
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* Display all the courses in the given course category. I could have used a parameter here
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* but instead I use the already available $_GET['category']
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* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
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* @return HTML code: a table with all the courses in a given category (title, code, tutor) and a subscription icon if applicable)
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*/
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function browse_courses_in_category()
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{
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$tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
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$category = Database::escape_string($_GET['category']);
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echo "<p><b>".get_lang('CoursesInCategory')."</b>";
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$my_category = (empty($category)?" IS NULL":"='".$category."'");
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$sql="SELECT * FROM $tbl_course WHERE category_code".$my_category.' ORDER BY title, visual_code';
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//showing only the courses of the current Dokeos access_url_id
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global $_configuration;
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if ($_configuration['multiple_access_urls']==true) {
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$url_access_id = api_get_current_access_url_id();
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if ($url_access_id !=-1) {
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$tbl_url_rel_course = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
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$sql="SELECT * FROM $tbl_course as course INNER JOIN $tbl_url_rel_course as url_rel_course
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ON (url_rel_course.course_code=course.code)
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WHERE access_url_id = $url_access_id AND category_code".$my_category.' ORDER BY title, visual_code';
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}
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}
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$result=Database::query($sql,__FILE__,__LINE__);
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while ($row=Database::fetch_array($result)) {
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if ($row['registration_code']=='') {
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$registration_code=false;
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} else {
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$registration_code=true;
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}
|
|
$courses[]=array("code" => $row['code'], "directory" => $row['directory'], "db"=> $row['db_name'], "visual_code" => $row['visual_code'], "title" => $row['title'], "tutor" => $row['tutor_name'], "subscribe" => $row['subscribe'], "unsubscribe" => $row['unsubscribe'], 'registration_code'=> $registration_code);
|
|
}
|
|
display_subscribe_to_courses($courses);
|
|
}
|
|
|
|
|
|
/**
|
|
* displays the form for searching for a course and the results if a query has been submitted.
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
|
|
* @return HTML code: the form for searching for a course
|
|
*/
|
|
function display_search_courses()
|
|
{
|
|
global $_user,$charset,$stok;
|
|
echo "<p><b>".get_lang("SearchCourse")."</b><br />";
|
|
echo "<form class=\"course_list\" method=\"post\" action=\"".api_get_self()."?action=subscribe\">",
|
|
'<input type="hidden" name="sec_token" value="'.$stok.'">',
|
|
"<input type=\"hidden\" name=\"search_course\" value=\"1\" />",
|
|
"<input type=\"text\" name=\"search_term\" value=\"".(empty($_POST['search_term'])?'':Security::remove_XSS($_POST['search_term']))."\" />",
|
|
" <button class=\"search\" type=\"submit\">",get_lang("_search")," </button>",
|
|
"</form>";
|
|
if (isset($_POST['search_course']))
|
|
{
|
|
echo "<p><b>".get_lang("SearchResultsFor")." ".api_htmlentities($_POST['search_term'],ENT_QUOTES,$charset)."</b><br />";
|
|
$result_search_courses_array=search_courses($_POST['search_term']);
|
|
display_subscribe_to_courses($result_search_courses_array);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This function displays the list of course that can be subscribed to.
|
|
* This list can come from the search results or from the browsing of the platform course categories
|
|
*/
|
|
function display_subscribe_to_courses($courses)
|
|
{
|
|
|
|
global $_user;
|
|
// getting all the courses to which the user is subscribed to
|
|
$user_courses=get_courses_of_user($_user['user_id']);
|
|
$user_coursecodes=array();
|
|
|
|
// we need only the course codes as these will be used to match against the courses of the category
|
|
if ($user_courses<>"") {
|
|
foreach ($user_courses as $key=>$value) {
|
|
$user_coursecodes[]=$value['code'];
|
|
}
|
|
}
|
|
|
|
if ($courses==0) {
|
|
return false;
|
|
}
|
|
|
|
echo "<table cellpadding=\"4\">\n";
|
|
foreach ($courses as $key=>$course) {
|
|
// displaying the course title, visual code and teacher/teaching staff
|
|
echo "\t<tr>\n";
|
|
|
|
if (api_get_setting('show_courses_descriptions_in_catalog') == 'true') {
|
|
// block course description
|
|
echo "\t\t<td>";
|
|
$icon_title = get_lang('CourseDetails') . ' - ' . $course['title'];
|
|
echo "<a href='course_description.php?code=".$course['code']."' title='$icon_title' rel='gb_page_center[778]'>".Display::return_icon('synthese_view.gif', $icon_title)."</a>";
|
|
echo "\t\t</td>";
|
|
}
|
|
|
|
echo "\t\t<td>\n";
|
|
echo "<b>".$course['title']."</b><br />";
|
|
if (api_get_setting("display_coursecode_in_courselist") == "true") {
|
|
echo $course['visual_code'];
|
|
}
|
|
if (api_get_setting("display_coursecode_in_courselist") == "true" AND api_get_setting("display_teacher_in_courselist") == "true") {
|
|
echo " - ";
|
|
}
|
|
if (api_get_setting("display_teacher_in_courselist") == "true")
|
|
{
|
|
echo $course['tutor'];
|
|
}
|
|
echo "\t\t</td>\n";
|
|
|
|
echo "\t\t<td>\n";
|
|
if ($course['registration_code'])
|
|
{
|
|
Display::display_icon('passwordprotected.png','',array('style'=>'float:left;'));
|
|
}
|
|
display_subscribe_icon($course, $user_coursecodes);
|
|
echo "\t\t</td>\n";
|
|
|
|
echo "</tr>";
|
|
|
|
}
|
|
echo "</table>";
|
|
}
|
|
|
|
/**
|
|
* Search the courses database for a course that matches the search term.
|
|
* The search is done on the code, title and tutor field of the course table.
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
|
|
* @param string $search_term: the string that the user submitted, what we are looking for
|
|
* @return array an array containing a list of all the courses (the code, directory, dabase, visual_code, title, ... )
|
|
* matching the the search term.
|
|
*/
|
|
function search_courses($search_term)
|
|
{
|
|
$TABLECOURS = Database::get_main_table(TABLE_MAIN_COURSE);
|
|
$search_term_safe=Database::escape_string($search_term);
|
|
$sql_find="SELECT * FROM $TABLECOURS WHERE code LIKE '%".$search_term_safe."%' OR title LIKE '%".$search_term_safe."%' OR tutor_name LIKE '%".$search_term_safe."%' ORDER BY title, visual_code ASC";
|
|
|
|
global $_configuration;
|
|
if ($_configuration['multiple_access_urls']==true) {
|
|
$url_access_id = api_get_current_access_url_id();
|
|
if ($url_access_id !=-1) {
|
|
$tbl_url_rel_course = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
|
|
$sql_find="SELECT * FROM $TABLECOURS as course INNER JOIN $tbl_url_rel_course as url_rel_course
|
|
ON (url_rel_course.course_code=course.code)
|
|
WHERE access_url_id = $url_access_id AND (code LIKE '%".$search_term_safe."%' OR title LIKE '%".$search_term_safe."%' OR tutor_name LIKE '%".$search_term_safe."%' ) ORDER BY title, visual_code ASC ";
|
|
}
|
|
}
|
|
$result_find=Database::query($sql_find,__FILE__,__LINE__);
|
|
while ($row=Database::fetch_array($result_find)) {
|
|
$courses[]=array("code" => $row['code'], "directory" => $row['directory'], "db"=> $row['db_name'], "visual_code" => $row['visual_code'], "title" => $row['title'], "tutor" => $row['tutor_name'], "subscribe" => $row['subscribe'], "unsubscribe" => $row['unsubscribe']);
|
|
}
|
|
return $courses;
|
|
}
|
|
|
|
|
|
/**
|
|
* deletes a course category and moves all the courses that were in this category to main category
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
|
|
* @param int $id: the id of the user_course_category
|
|
* @return string a language variable saying that the deletion went OK.
|
|
*/
|
|
function delete_course_category($id)
|
|
{
|
|
global $_user, $_configuration;
|
|
|
|
$tucc = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
|
|
$TABLECOURSUSER=Database::get_main_table(TABLE_MAIN_COURSE_USER);
|
|
$id = intval($id);
|
|
$sql_delete="DELETE FROM $tucc WHERE id='".$id."' and user_id='".$_user['user_id']."'";
|
|
$sql_update="UPDATE $TABLECOURSUSER SET user_course_cat='0' WHERE user_course_cat='".$id."' AND user_id='".$_user['user_id']."'";
|
|
Database::query($sql_delete,__FILE__,__LINE__);
|
|
Database::query($sql_update,__FILE__,__LINE__);
|
|
|
|
return get_lang("CourseCategoryDeleted");
|
|
}
|
|
|
|
|
|
/**
|
|
* stores the user course category in the dokeos_user database
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
|
|
* @return string a language variable saying that the user course category was stored
|
|
*/
|
|
function store_course_category()
|
|
{
|
|
global $_user, $_configuration, $charset;
|
|
|
|
$tucc = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
|
|
|
|
// step 1: we determine the max value of the user defined course categories
|
|
$sql="SELECT sort FROM $tucc WHERE user_id='".$_user['user_id']."' ORDER BY sort DESC";
|
|
$result=Database::query($sql,__FILE__,__LINE__);
|
|
$maxsort=Database::fetch_array($result);
|
|
$nextsort=$maxsort['sort']+1;
|
|
|
|
// step 2: we check if there is already a category with this name, if not we store it, else we give an error.
|
|
$sql="SELECT * FROM $tucc WHERE user_id='".$_user['user_id']."' AND title='".Database::escape_string($_POST['title_course_category'])."'ORDER BY sort DESC";
|
|
$result=Database::query($sql,__FILE__,__LINE__);
|
|
if (Database::num_rows($result) == 0)
|
|
{
|
|
$sql_insert="INSERT INTO $tucc (user_id, title,sort) VALUES ('".$_user['user_id']."', '".api_htmlentities($_POST['title_course_category'],ENT_QUOTES,$charset)."', '".$nextsort."')";
|
|
Database::query($sql_insert,__FILE__,__LINE__);
|
|
Display::display_confirmation_message(get_lang("CourseCategoryStored"));
|
|
}
|
|
else
|
|
{
|
|
Display::display_error_message(get_lang('ACourseCategoryWithThisNameAlreadyExists'));
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* displays the form that is needed to create a course category.
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
|
|
* @return HTML the form (input field + submit button) to create a user course category
|
|
*/
|
|
function display_create_course_category_form()
|
|
{
|
|
global $_user, $_configuration,$stok;
|
|
|
|
echo "<form name=\"create_course_category\" method=\"post\" action=\"".api_get_self()."?action=sortmycourses\">\n";
|
|
echo '<input type="hidden" name="sec_token" value="'.$stok.'">';
|
|
echo "<input type=\"text\" name=\"title_course_category\" />\n";
|
|
echo "<button type=\"submit\" class=\"save\" name=\"create_course_category\">".get_lang('Ok')." </button>\n";
|
|
echo "</form>\n";
|
|
|
|
echo get_lang("ExistingCourseCategories");
|
|
$tucc = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
|
|
$sql="SELECT * FROM $tucc WHERE user_id='".$_user['user_id']."'";
|
|
$result=Database::query($sql, __LINE__, __FILE__);
|
|
if (Database::num_rows($result)>0)
|
|
{
|
|
echo "<ul>\n";
|
|
while ($row=Database::fetch_array($result))
|
|
{
|
|
echo "\t<li>".$row['title']."</li>\n";
|
|
}
|
|
echo "</ul>\n";
|
|
}
|
|
}
|
|
// ***************************************************************************
|
|
// this function stores the changes in a course category
|
|
//
|
|
// ***************************************************************************
|
|
|
|
/**
|
|
* stores the changes in a course category (moving a course to a different course category)
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
|
|
* @param string $course_code : the course_code of the course we are moving
|
|
* int $newcategory : the id of the user course category we are moving the course to.
|
|
* @return string a language variable saying that the course was moved.
|
|
*/
|
|
function store_changecoursecategory($course_code, $newcategory)
|
|
{
|
|
global $_user;
|
|
$course_code = Database::escape_string($course_code);
|
|
$newcategory = Database::escape_string($newcategory);
|
|
|
|
$TABLECOURSUSER = Database::get_main_table(TABLE_MAIN_COURSE_USER);
|
|
|
|
$max_sort_value=api_max_sort_value($newcategory,$_user['user_id']); //max_sort_value($newcategory);
|
|
$sql="UPDATE $TABLECOURSUSER SET user_course_cat='".$newcategory."', sort='".($max_sort_value+1)."' WHERE course_code='".$course_code."' AND user_id='".$_user['user_id']."'";
|
|
$result=Database::query($sql,__FILE__,__LINE__);
|
|
return get_lang("EditCourseCategorySucces");
|
|
}
|
|
/**
|
|
* moves the course one place up or down
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
|
|
* @param string $direction : the direction we are moving the course to (up or down)
|
|
* string $course2move : the course we are moving
|
|
* @return string a language variable saying that the course was moved.
|
|
*/
|
|
function move_course($direction, $course2move, $category)
|
|
{
|
|
global $_user;
|
|
$TABLECOURSUSER = Database::get_main_table(TABLE_MAIN_COURSE_USER);
|
|
|
|
$all_user_courses=get_courses_of_user($_user['user_id']);
|
|
|
|
// we need only the courses of the category we are moving in
|
|
$user_courses = array();
|
|
foreach ($all_user_courses as $key=>$course)
|
|
{
|
|
if ($course['user_course_category']==$category)
|
|
{
|
|
$user_courses[]=$course;
|
|
}
|
|
}
|
|
|
|
foreach ($user_courses as $key=>$course)
|
|
{
|
|
if ($course2move==$course['code'])
|
|
{
|
|
// source_course is the course where we clicked the up or down icon
|
|
$source_course=$course;
|
|
// target_course is the course before/after the source_course (depending on the up/down icon)
|
|
if ($direction=="up")
|
|
{$target_course=$user_courses[$key-1];}
|
|
else
|
|
{$target_course=$user_courses[$key+1];}
|
|
} // if ($course2move==$course['code'])
|
|
}
|
|
|
|
if(count($target_course)>0 && count($source_course)>0)
|
|
{
|
|
$sql_update1="UPDATE $TABLECOURSUSER SET sort='".$target_course['sort']."' WHERE course_code='".$source_course['code']."' AND user_id='".$_user['user_id']."'";
|
|
$sql_update2="UPDATE $TABLECOURSUSER SET sort='".$source_course['sort']."' WHERE course_code='".$target_course['code']."' AND user_id='".$_user['user_id']."'";
|
|
Database::query($sql_update2,__FILE__,__LINE__);
|
|
Database::query($sql_update1,__FILE__,__LINE__);
|
|
return get_lang("CourseSortingDone");
|
|
}
|
|
return '';
|
|
}
|
|
|
|
|
|
/**
|
|
* Moves the course one place up or down
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
|
|
* @param string $direction : the direction we are moving the course to (up or down)
|
|
* string $course2move : the course we are moving
|
|
* @return string a language variable saying that the course was moved.
|
|
*/
|
|
function move_category($direction, $category2move)
|
|
{
|
|
global $_user;
|
|
// the database definition of the table that stores the user defined course categories
|
|
$table_user_defined_category = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
|
|
|
|
$user_coursecategories=get_user_course_categories();
|
|
$user_course_categories_info = get_user_course_categories_info();
|
|
|
|
foreach ($user_coursecategories as $key=>$category_id)
|
|
{
|
|
if ($category2move==$category_id)
|
|
{
|
|
// source_course is the course where we clicked the up or down icon
|
|
//$source_category=get_user_course_category($category2move);
|
|
$source_category = $user_course_categories_info[$category2move];
|
|
// target_course is the course before/after the source_course (depending on the up/down icon)
|
|
if ($direction=="up")
|
|
{
|
|
$target_category=$user_course_categories_info[$user_coursecategories[$key-1]];
|
|
}
|
|
else
|
|
{
|
|
$target_category=$user_course_categories_info[$user_coursecategories[$key+1]];
|
|
}
|
|
} // if ($course2move==$course['code'])
|
|
} // foreach ($user_courses as $key=>$course)
|
|
|
|
if(count($target_category)>0 && count($source_category)>0)
|
|
{
|
|
$sql_update1="UPDATE $table_user_defined_category SET sort='".$target_category['sort']."' WHERE id='".$source_category['id']."' AND user_id='".$_user['user_id']."'";
|
|
$sql_update2="UPDATE $table_user_defined_category SET sort='".$source_category['sort']."' WHERE id='".$target_category['id']."' AND user_id='".$_user['user_id']."'";
|
|
Database::query($sql_update2,__FILE__,__LINE__);
|
|
Database::query($sql_update1,__FILE__,__LINE__);
|
|
return get_lang("CategorySortingDone");
|
|
}
|
|
return '';
|
|
}
|
|
|
|
/**
|
|
* displays everything that is needed when the user wants to manage his current courses (sorting, subscribing, unsubscribing, ...)
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
|
|
* @param int $user_id: the user_id of the current user
|
|
* string $parameter: determines weither we are displaying for the sorting, subscribing or unsubscribin
|
|
array $user_courses: the courses to which the user is subscribed
|
|
* @return html a table containing courses and the appropriate icons (sub/unsub/move)
|
|
*/
|
|
|
|
function display_courses($user_id, $show_course_icons, $user_courses)
|
|
{
|
|
global $_user, $_configuration;
|
|
|
|
echo "<table cellpadding=\"4\">\n";
|
|
|
|
// building an array that contains all the id's of the user defined course categories
|
|
// initially this was inside the display_courses_in_category function but when we do it here we have fewer
|
|
// sql executions = performance increase.
|
|
$all_user_categories=get_user_course_categories();
|
|
|
|
// step 0: we display the course without a user category
|
|
display_courses_in_category(0,'true');
|
|
|
|
// Step 1: we get all the categories of the user
|
|
$tucc = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
|
|
$sql="SELECT * FROM $tucc WHERE user_id='".$_user['user_id']."' ORDER BY sort ASC";
|
|
$result=Database::query($sql,__FILE__,__LINE__);
|
|
while ($row=Database::fetch_array($result))
|
|
{
|
|
if ($show_course_icons=true)
|
|
{
|
|
|
|
// the edit link is clicked: we display the edit form for the category
|
|
if (isset($_GET['categoryid']) AND $_GET['categoryid']==$row['id'])
|
|
{
|
|
echo "<tr><td colspan=\"2\" class=\"user_course_category\">";
|
|
echo '<a name="category'.$row['id'].'"></a>'; // display an internal anchor.
|
|
display_edit_course_category_form($row['id']);
|
|
}
|
|
// we simply display the title of the catgory
|
|
else
|
|
{
|
|
echo "<tr><td colspan=\"2\" class=\"user_course_category\">";
|
|
echo '<a name="category'.$row['id'].'"></a>'; // display an internal anchor.
|
|
echo $row['title'];
|
|
}
|
|
echo "</td><td class=\"user_course_category\">";
|
|
display_category_icons($row['id'],$all_user_categories);
|
|
echo "</td></tr>";
|
|
}
|
|
// Step 2: show the courses inside this category
|
|
display_courses_in_category($row['id'], $show_course_icons);
|
|
}
|
|
echo "</table>\n";
|
|
}
|
|
|
|
/**
|
|
* This function displays all the courses in the particular user category;
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
|
|
* @param int id: the id of the user defined course category
|
|
* @return string: the name of the user defined course category
|
|
*/
|
|
function display_courses_in_category($user_category_id, $showicons)
|
|
{
|
|
global $_user;
|
|
|
|
// table definitions
|
|
$TABLECOURS=Database::get_main_table(TABLE_MAIN_COURSE);
|
|
$TABLECOURSUSER=Database::get_main_table(TABLE_MAIN_COURSE_USER);
|
|
$TABLE_USER_COURSE_CATEGORY = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
|
|
|
|
|
|
|
|
$sql_select_courses="SELECT course.code, course.visual_code, course.subscribe subscr, course.unsubscribe unsubscr,
|
|
course.title title, course.tutor_name tutor, course.db_name, course.directory, course_rel_user.status status,
|
|
course_rel_user.sort sort, course_rel_user.user_course_cat user_course_cat
|
|
FROM $TABLECOURS course,
|
|
$TABLECOURSUSER course_rel_user
|
|
WHERE course.code = course_rel_user.course_code
|
|
AND course_rel_user.user_id = '".$_user['user_id']."'
|
|
AND course_rel_user.user_course_cat='".$user_category_id."'
|
|
ORDER BY course_rel_user.user_course_cat, course_rel_user.sort ASC";
|
|
$result = Database::query($sql_select_courses,__FILE__,__LINE__);
|
|
$number_of_courses=Database::num_rows($result);
|
|
$key=0;
|
|
while ($course=Database::fetch_array($result))
|
|
{
|
|
echo "\t<tr>\n";
|
|
|
|
if (api_get_setting('show_courses_descriptions_in_catalog') == 'true') {
|
|
// block course description
|
|
echo "\t\t<td>";
|
|
$icon_title = get_lang('CourseDetails') . ' - ' . $course['title'];
|
|
echo "<a href='course_description.php?code=".$course['code']."' title='$icon_title' rel='gb_page_center[778]'>".Display::return_icon('synthese_view.gif', $icon_title)."</a>";
|
|
echo "\t\t</td>";
|
|
}
|
|
|
|
echo "\t\t<td>\n";
|
|
echo '<a name="course'.$course['code'].'"></a>'; // display an internal anchor.
|
|
echo "<b>".$course['title']."</b><br />";
|
|
if (api_get_setting("display_coursecode_in_courselist") == "true")
|
|
{
|
|
echo $course['visual_code'];
|
|
}
|
|
if (api_get_setting("display_coursecode_in_courselist") == "true" AND api_get_setting("display_teacher_in_courselist") == "true")
|
|
{
|
|
echo " - ";
|
|
}
|
|
if (api_get_setting("display_teacher_in_courselist") == "true")
|
|
{
|
|
echo $course['tutor'];
|
|
}
|
|
echo "\t\t</td>\n";
|
|
// displaying the up/down/edit icons when we are sorting courses
|
|
echo "\t\t<td valign=\"top\">\n";
|
|
//if ($parameter=="sorting")
|
|
//{
|
|
display_course_icons($key, $number_of_courses, $course);
|
|
//}
|
|
// displaying the delete icon when we are unsubscribing from courses
|
|
//if($parameter=="deleting")
|
|
//{
|
|
// display_unsubscribe_icons($course);
|
|
//}
|
|
// display the subscribing icon when we are to courses.
|
|
//if ($parameter=="subscribing")
|
|
//{
|
|
// display_subscribe_icon($course);
|
|
//}
|
|
echo "\t\t</td>\n";
|
|
echo "\t</tr>\n";
|
|
$key++;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gets the title of the user course category
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
|
|
* @param int id: the id of the user defined course category
|
|
* @return string: the name of the user defined course category
|
|
*/
|
|
function get_user_course_category($id)
|
|
{
|
|
global $_user, $_configuration;
|
|
|
|
$tucc = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
|
|
$id = intval($id);
|
|
$sql="SELECT * FROM $tucc WHERE user_id='".$_user['user_id']."' AND id='$id'";
|
|
$result=Database::query($sql,__FILE__,__LINE__);
|
|
$row=Database::fetch_array($result);
|
|
return $row;
|
|
}
|
|
|
|
|
|
/**
|
|
* displays the subscribe icon if the subscribing is allowed and if the user is not yet
|
|
* subscribe to this course
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
|
|
* @param string $current_course: the course code of the course we need to display the subscribe icon for
|
|
* @return string a subscribe icon or the text that subscribing is not allowed or the user is already subscribed
|
|
*/
|
|
function display_subscribe_icon($current_course, $user_coursecodes)
|
|
{
|
|
global $stok;
|
|
// we display the icon to subscribe or the text already subscribed
|
|
if (in_array($current_course['code'],$user_coursecodes)) {
|
|
Display::display_icon('enroll_na.gif', get_lang('AlreadySubscribed'));
|
|
} else {
|
|
if ($current_course['subscribe'] == SUBSCRIBE_ALLOWED)
|
|
{
|
|
echo "<form action=\"".$_SERVER["REQUEST_URI"]."\" method=\"post\">";
|
|
echo '<input type="hidden" name="sec_token" value="'.$stok.'">';
|
|
echo "<input type=\"hidden\" name=\"subscribe\" value=\"".$current_course['code']."\" />";
|
|
if(!empty($_POST['search_term'])) {
|
|
echo '<input type="hidden" name="search_course" value="1" />';
|
|
echo '<input type="hidden" name="search_term" value="'.Security::remove_XSS($_POST['search_term']).'" />';
|
|
}
|
|
echo "<input style=\"border-color:#fff\" type=\"image\" name=\"unsub\" src=\"../img/enroll.gif\" title=\"".get_lang("Subscribe")."\" alt=\"".get_lang("Subscribe")."\" /></form>";
|
|
} else {
|
|
// echo get_lang("SubscribingNotAllowed");
|
|
Display::display_icon('enroll_na.gif', get_lang('SubscribingNotAllowed'));
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Displays the subscribe icon if the subscribing is allowed and if the user is not yet
|
|
* subscribed to this course
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
|
|
* @param $key:
|
|
* $number_of_courses
|
|
* $course
|
|
* $user_courses
|
|
* @return html a small table containing the up/down icons and the edit icon (for moving to a different user course category)
|
|
* @todo complete the comments on this function: the parameter section
|
|
*/
|
|
function display_course_icons($key, $number_of_courses, $course)
|
|
{
|
|
//print_r($course);
|
|
global $safe,$charset,$stok;
|
|
echo "<table><tr><td>";
|
|
// the up icon
|
|
if ($key>0)
|
|
{
|
|
echo "<a href=\"courses.php?action=".$safe['action']."&move=up&course=".$course['code']."&category=".$course['user_course_cat']."&sec_token=".$stok."\">";
|
|
Display::display_icon('up.gif', get_lang('Up'));
|
|
echo '</a>';
|
|
}
|
|
echo "</td>";
|
|
// the edit icon OR the edit dropdown list
|
|
if (isset($_GET['edit']) and $course['code']==$_GET['edit'])
|
|
{
|
|
echo "<td rowspan=\"2\" valign=\"top\">".display_change_course_category_form($_GET['edit'])."</td>";
|
|
}
|
|
else
|
|
{
|
|
echo "<td rowspan=\"2\" valign=\"middle\"><a href=\"courses.php?action=".$safe['action']."&edit=".$course['code']."&sec_token=".$stok."\">";
|
|
Display::display_icon('edit.gif',get_lang('Edit'));
|
|
echo "</a></td>";
|
|
}
|
|
echo "<td rowspan=\"2\" valign=\"top\" class=\"invisible\">";
|
|
if ($course['status'] != 1) {
|
|
if ($course['unsubscr'] == 1) {
|
|
// changed link to submit to avoid action by the search tool indexer
|
|
echo "<form action=\"".api_get_self()."\" method=\"post\" onsubmit=\"javascript:if(!confirm('".addslashes(api_htmlentities(get_lang("ConfirmUnsubscribeFromCourse"),ENT_QUOTES,$charset))."')) return false;\">";
|
|
echo '<input type="hidden" name="sec_token" value="'.$stok.'">';
|
|
echo "<input type=\"hidden\" name=\"unsubscribe\" value=\"".$course['code']."\" />";
|
|
echo '<input type="image" name="unsub" style="border-color:#fff" src="../img/delete.gif" title="'.get_lang("_unsubscribe").'" alt="'.get_lang("_unsubscribe").'" /></form>';
|
|
} else {
|
|
display_info_text(get_lang("UnsubscribeNotAllowed"));}
|
|
}
|
|
else
|
|
{
|
|
display_info_text(get_lang("CourseAdminUnsubscribeNotAllowed"));
|
|
}
|
|
echo "</td>";
|
|
echo "</tr><tr><td>";
|
|
if ($key<$number_of_courses-1)
|
|
{
|
|
echo "<a href=\"courses.php?action=".$safe['action']."&move=down&course=".$course['code']."&category=".$course['user_course_cat']."&sec_token=".$stok."\">";
|
|
Display::display_icon('down.gif', get_lang('Down'));
|
|
echo '</a>';
|
|
}
|
|
echo "</td></tr></table>";
|
|
}
|
|
|
|
/**
|
|
* displays the relevant icons for the category (if applicable):move up, move down, edit, delete
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
|
|
* @param $current_category the id of the current category
|
|
* $allcategories an associative array containing all the categories.
|
|
* @return html: a small table containing the up/down icons and the edit icon (for moving to a different user course category)
|
|
* @todo complete the comments on this function: the parameter section
|
|
*/
|
|
function display_category_icons($current_category, $all_user_categories)
|
|
{
|
|
global $safe,$charset,$stok;
|
|
$max_category_key=count($all_user_categories);
|
|
|
|
if ($safe['action']<>'unsubscribe') // we are in the unsubscribe section then we do not show the icons.
|
|
{
|
|
echo "<table>";
|
|
echo "<tr>";
|
|
echo "<td>";
|
|
if ($current_category<>$all_user_categories[0])
|
|
{
|
|
echo "<a href=\"courses.php?action=".$safe['action']."&move=up&category=".$current_category."&sec_token=".$stok."\">";
|
|
echo Display::return_icon('up.gif', get_lang('Up')).'</a>';
|
|
}
|
|
echo "</td>";
|
|
echo " <td rowspan=\"2\">";
|
|
echo " <a href=\"courses.php?action=sortmycourses&categoryid=".$current_category."&sec_token=".$stok."#category".$current_category."\">";
|
|
Display::display_icon('edit.gif',get_lang('Edit'));
|
|
echo "</a>";
|
|
echo "</td>";
|
|
echo "<td rowspan=\"2\">";
|
|
echo " <a href=\"courses.php?action=deletecoursecategory&id=".$current_category."&sec_token=".$stok."\">";
|
|
Display::display_icon('delete.gif',get_lang('Delete'),array('onclick'=>"javascript:if(!confirm('".addslashes(api_htmlentities(get_lang("CourseCategoryAbout2bedeleted"),ENT_QUOTES,$charset))."')) return false;"));
|
|
echo "</a>";
|
|
echo "</td>";
|
|
echo "</tr>";
|
|
echo "<tr>";
|
|
echo " <td>";
|
|
if ($current_category<>$all_user_categories[$max_category_key-1])
|
|
{
|
|
echo "<a href=\"courses.php?action=".$safe['action']."&move=down&category=".$current_category."&sec_token=".$stok."\">";
|
|
echo Display::return_icon('down.gif', get_lang('Down')).'</a>';
|
|
}
|
|
echo "</td>";
|
|
echo " </tr>";
|
|
echo "</table>";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This function displays the form (dropdown list) to move a course to a
|
|
* different course_category (after the edit icon has been changed)
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
|
|
* @param string $edit_course:
|
|
* @return html a dropdown list containing all the user defined course categories and a submit button
|
|
* @todo when editing (moving) a course inside a user defined course category to a different user defined category
|
|
* the dropdown list should have the current course category selected.
|
|
*/
|
|
function display_change_course_category_form($edit_course)
|
|
{
|
|
global $_user, $_configuration, $safe, $stok;
|
|
$edit_course = Security::remove_XSS($edit_course);
|
|
|
|
$DATABASE_USER_TOOLS = $_configuration['user_personal_database'];
|
|
$tucc = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
|
|
$sql="SELECT * FROM $tucc WHERE user_id='".$_user['user_id']."'";
|
|
$result=Database::query($sql,__FILE__,__LINE__);
|
|
|
|
|
|
$output="<form name=\"edit_course_category\" method=\"post\" action=\"courses.php?action=".$safe['action']."\">\n";
|
|
$output.= '<input type="hidden" name="sec_token" value="'.$stok.'">';
|
|
$output.="<input type=\"hidden\" name=\"course_2_edit_category\" value=\"".$edit_course."\" />";
|
|
$output.="\t<select name=\"course_categories\">\n";
|
|
$output.="\t\t<option value=\"0\">".get_lang("NoCourseCategory")."</option>";
|
|
while ($row=Database::fetch_array($result))
|
|
{$output.="\t\t<option value=\"".$row['id']."\">".$row['title']."</option>";}
|
|
$output.="\t</select>\n";
|
|
$output.="\t<button class=\"save\" type=\"submit\" name=\"submit_change_course_category\">".get_lang("Ok")." </button>\n";
|
|
$output.="</form>";
|
|
return $output;
|
|
}
|
|
|
|
|
|
/**
|
|
* This function displays the unsubscribe part which can be
|
|
* 1. the unsubscribe link
|
|
* 2. text: you are course admin of this course (=> unsubscription is not possible
|
|
* 3. text: you are not allowed to unsubscribe from this course
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
|
|
* @param array $course: the array with all the course & course_rel_user information
|
|
* @return html a delete icon or a text that unsubscribing is not possible (course admin) or not allowed.
|
|
*/
|
|
function display_unsubscribe_icons($course)
|
|
{
|
|
global $charset, $stok;
|
|
if ($course['status'] != 1)
|
|
{
|
|
if ($course['unsubscribe'] == 1)
|
|
{ // changed link to submit to avoid action by the search tool indexer
|
|
echo "<form action=\"".api_get_self()."\" method=\"post\" onsubmit=\"javascript:if(!confirm('".addslashes(api_htmlentities(get_lang("ConfirmUnsubscribeFromCourse"),ENT_QUOTES,$charset))."')) return false;\">";
|
|
echo '<input type="hidden" name="sec_token" value="'.$stok.'">';
|
|
echo "<input type=\"hidden\" name=\"unsubscribe\" value=\"".$course['code']."\" />";
|
|
echo "<input type=\"image\" name=\"unsub\" src=\"../img/delete.gif\" alt=\"".get_lang("_unsubscribe")."\" /></form>";
|
|
}
|
|
else
|
|
{display_info_text(get_lang("UnsubscribeNotAllowed"));}
|
|
}
|
|
else
|
|
{
|
|
display_info_text(get_lang("CourseAdminUnsubscribeNotAllowed"));
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* retrieves all the courses that the user has already subscribed to
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
|
|
* @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)
|
|
{
|
|
$TABLECOURS=Database::get_main_table(TABLE_MAIN_COURSE);
|
|
$TABLECOURSUSER=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 $TABLECOURS course,
|
|
$TABLECOURSUSER course_rel_user
|
|
WHERE course.code = course_rel_user.course_code
|
|
AND course_rel_user.user_id = '".$user_id."'
|
|
ORDER BY course_rel_user.sort ASC";
|
|
$result = Database::query($sql_select_courses,__FILE__,__LINE__);
|
|
while ($row=Database::fetch_array($result))
|
|
{
|
|
// we only need the database name of the course
|
|
$courses[]=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;
|
|
}
|
|
|
|
/**
|
|
* retrieves the user defined course categories
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
|
|
* @return array containing all the IDs of the user defined courses categories, sorted by the "sort" field
|
|
*/
|
|
function get_user_course_categories()
|
|
{
|
|
global $_user;
|
|
$table_category = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
|
|
$sql = "SELECT * FROM ".$table_category." WHERE user_id='".$_user['user_id']."' ORDER BY sort ASC";
|
|
$result = Database::query($sql,__FILE__,__LINE__);
|
|
while ($row = Database::fetch_array($result))
|
|
{
|
|
$output[] = $row['id'];
|
|
}
|
|
return $output;
|
|
}
|
|
|
|
|
|
/**
|
|
* Retrieves the user defined course categories and all the info that goes with it
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
|
|
* @return array containing all the info of the user defined courses categories with the id as key of the array
|
|
*/
|
|
function get_user_course_categories_info()
|
|
{
|
|
global $_user;
|
|
$table_category = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
|
|
$sql = "SELECT * FROM ".$table_category." WHERE user_id='".$_user['user_id']."' ORDER BY sort ASC";
|
|
$result = Database::query($sql,__FILE__,__LINE__);
|
|
while ($row = Database::fetch_array($result))
|
|
{
|
|
$output[$row['id']] = $row;
|
|
}
|
|
return $output;
|
|
}
|
|
|
|
/**
|
|
* @author unknown
|
|
* @param string $text: the text that has to be written in grey
|
|
* @return string: the text with the grey formatting
|
|
* @todo move this to a stylesheet
|
|
* Added id grey to CSS
|
|
*/
|
|
function display_info_text($text)
|
|
{
|
|
//echo "<font color=\"#808080\">" . $text . "</font>\n";
|
|
echo $text;
|
|
}
|
|
|
|
/**
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
|
|
* @param string $edit_course:
|
|
* @return html output: the form
|
|
*/
|
|
function display_edit_course_category_form($edit_course_category)
|
|
{
|
|
global $safe, $stok;
|
|
echo "<form name=\"edit_course_category\" method=\"post\" action=\"courses.php?action=".$safe['action']."\">\n";
|
|
echo "\t<input type=\"hidden\" name=\"edit_course_category\" value=\"".$edit_course_category."\" />\n";
|
|
echo '<input type="hidden" name="sec_token" value="'.$stok.'">';
|
|
$info_this_user_course_category=get_user_course_category($edit_course_category);
|
|
echo "\t<input type=\"text\" name=\"title_course_category\" value=\"".$info_this_user_course_category['title']."\" />";
|
|
echo "\t<button class=\"save\" type=\"submit\" name=\"submit_edit_course_category\">".get_lang("Ok")." </button>\n";
|
|
echo "</form>";
|
|
}
|
|
|
|
/**
|
|
* Updates the user course category in the dokeos_user database
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
|
|
* @return string a language variable saying that the user course category was stored
|
|
*/
|
|
function store_edit_course_category()
|
|
{
|
|
global $_user, $_configuration, $charset;
|
|
|
|
$tucc = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
|
|
$sql_update="UPDATE $tucc SET title='".api_htmlentities($_POST['title_course_category'],ENT_QUOTES,$charset)."' WHERE id='".(int)$_POST['edit_course_category']."'";
|
|
Database::query($sql_update,__FILE__,__LINE__);
|
|
return get_lang("CourseCategoryEditStored");
|
|
}
|
|
?>
|
|
|