, Ghent University - refactoring and code cleaning
*/
function display_anonymous_course_list() {
$ctok = $_SESSION['sec_token'];
$stok = Security::get_token();
// Initialization.
$user_identified = (api_get_user_id() > 0 && !api_is_anonymous());
$web_course_path = api_get_path(WEB_COURSE_PATH);
$category = Database::escape_string($_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 $main_course_table cours
WHERE category_code = '".Database::escape_string($_GET['category'])."'
ORDER BY title, UPPER(visual_code)";
// Showing only the courses of the current access_url_id.
global $_configuration;
if ($_configuration['multiple_access_urls']) {
$url_access_id = api_get_current_access_url_id();
if ($url_access_id != -1) {
$tbl_url_rel_course = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
$sql_get_course_list = "SELECT * FROM $main_course_table as course INNER JOIN $tbl_url_rel_course as url_rel_course
ON (url_rel_course.course_code=course.code)
WHERE access_url_id = $url_access_id AND category_code = '".Database::escape_string($_GET['category'])."' ORDER BY title, UPPER(visual_code)";
}
}
// Removed: AND cours.visibility='".COURSE_VISIBILITY_OPEN_WORLD."'
$sql_result_courses = Database::query($sql_get_course_list);
while ($course_result = Database::fetch_array($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";
// Showing only the category of courses of the current access_url_id.
global $_configuration;
if ($_configuration['multiple_access_urls']) {
$url_access_id = api_get_current_access_url_id();
if ($url_access_id != -1) {
$tbl_url_rel_course = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
$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)
INNER JOIN $tbl_url_rel_course as url_rel_course
ON (url_rel_course.course_code=t3.code)
WHERE access_url_id = $url_access_id AND t1.parent_id ".(empty($category) ? "IS NULL" : "='$category'")."
GROUP BY t1.name,t1.code,t1.parent_id,t1.children_count ORDER BY t1.tree_pos, t1.name";
}
}
$resCats = Database::query($sqlGetSubCatList);
$thereIsSubCat = false;
if (Database::num_rows($resCats) > 0) {
$htmlListCat = ''.get_lang('CatList').'
';
while ($catLine = Database::fetch_array($resCats)) {
if ($catLine['code'] != $category) {
$category_has_open_courses = self::category_has_open_courses($catLine['code']);
if ($category_has_open_courses) {
// The category contains courses accessible to anonymous visitors.
$htmlListCat .= '- ';
$htmlListCat .= ''.$catLine['name'].'';
if (api_get_setting('show_number_of_courses') == 'true') {
$htmlListCat .= ' ('.$catLine['nbCourse'].' '.get_lang('Courses').')';
}
$htmlListCat .= "
\n";
$thereIsSubCat = true;
} elseif ($catLine['children_count'] > 0) {
// The category has children, subcategories.
$htmlListCat .= '- ';
$htmlListCat .= ''.$catLine['name'].'';
$htmlListCat .= "
\n";
$thereIsSubCat = true;
}
/* End changed code to eliminate the (0 courses) after empty categories. */
elseif (api_get_setting('show_empty_course_categories') == 'true') {
$htmlListCat .= '- ';
$htmlListCat .= $catLine['name'];
$htmlListCat .= "
\n";
$thereIsSubCat = true;
} // Else don't set thereIsSubCat to true to avoid printing things if not requested.
} else {
$htmlTitre = '';
if (api_get_setting('show_back_link_on_top_of_tree') == 'true') {
$htmlTitre .= '<< '.get_lang('BackToHomePage').'';
}
if (!is_null($catLine['parent_id']) || (api_get_setting('show_back_link_on_top_of_tree') != 'true' && !is_null($catLine['code']))) {
$htmlTitre .= '<< '.get_lang('Up').'';
}
$htmlTitre .= "
\n";
if ($category != "" && !is_null($catLine['code'])) {
$htmlTitre .= ''.$catLine['name']."
\n";
} else {
$htmlTitre .= ''.get_lang('Categories')."
\n";
}
}
}
$htmlListCat .= "
";
}
echo $htmlTitre;
if ($thereIsSubCat) {
echo $htmlListCat;
}
while ($categoryName = Database::fetch_array($resCats)) {
echo '', $categoryName['name'], "
\n";
}
$numrows = Database::num_rows($sql_result_courses);
$courses_list_string = '';
$courses_shown = 0;
if ($numrows > 0) {
if ($thereIsSubCat) {
$courses_list_string .= "
\n";
}
$courses_list_string .= ''.get_lang('CourseList')."
\n\n";
if (api_get_user_id()) {
$courses_of_user = self::get_courses_of_user(api_get_user_id());
}
foreach ($course_list as $course) {
// $setting_show_also_closed_courses
if (!$setting_show_also_closed_courses) {
// 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 && $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM) || ($course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD)) {
$courses_shown++;
$courses_list_string .= "- \n";
$courses_list_string .= ''.$course['title'].'
';
if (api_get_setting('display_coursecode_in_courselist') == 'true') {
$courses_list_string .= $course['visual_code'];
}
if (api_get_setting('display_coursecode_in_courselist') == 'true' && api_get_setting('display_teacher_in_courselist') == 'true') {
$courses_list_string .= ' - ';
}
if (api_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 .= " \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++;
$courses_list_string .= "- \n";
if ($course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD
|| ($user_identified && $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM)
|| ($user_identified && key_exists($course['code'], $courses_of_user) && $course['visibility'] != COURSE_VISIBILITY_CLOSED)
|| $courses_of_user[$course['code']]['status'] == '1'
|| api_is_platform_admin()) {
$courses_list_string .= '';
}
$courses_list_string .= $course['title'];
if ($course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD
|| ($user_identified && $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM)
|| ($user_identified && key_exists($course['code'], $courses_of_user) && $course['visibility'] != COURSE_VISIBILITY_CLOSED)
|| $courses_of_user[$course['code']]['status'] == '1'
|| api_is_platform_admin()) {
$courses_list_string .= '
';
}
if (api_get_setting('display_coursecode_in_courselist') == 'true') {
$courses_list_string .= ' '.$course['visual_code'];
}
if (api_get_setting('display_coursecode_in_courselist') == 'true' && api_get_setting('display_teacher_in_courselist') == 'true') {
$courses_list_string .= ' - ';
}
if (api_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 ($user_identified && !key_exists($course['code'], $courses_of_user)) {
if ($course['subscribe'] == '1') {
$courses_list_string .= '';
} else {
$courses_list_string .= '
'.get_lang('SubscribingNotAllowed');
}
}
$courses_list_string .= " ";
}
}
$courses_list_string .= "
";
} else {
//echo '', get_lang('_No_course_publicly_available'), "
\n";
}
if ($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 ' ', Display :: return_icon('back.png', get_lang('BackToHomePage')), get_lang('BackToHomePage'), '
';
}
}
/**
* retrieves all the courses that the user has already subscribed to
* @author Patrick Cool , 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."'
AND course_rel_user.relation_type<>".COURSE_RELATION_TYPE_RRHH."
ORDER BY course_rel_user.sort ASC";
$result = Database::query($sql_select_courses);
$courses = array();
while ($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 $courses;
}
function show_right_block($title, $content, $class = '') {
$html = '';
$html.= '';
return $html;
}
/**
* Adds a form to let users login
* @version 1.1
*/
function display_login_form() {
$form = new FormValidator('formLogin', 'POST', null, null, array('class'=>'form-vertical'));
// 'placeholder'=>get_lang('UserName')
$form->addElement('text', 'login', get_lang('UserName'), array('class' => 'span2','autofocus' => 'autofocus'));
$form->addElement('password', 'password', get_lang('Pass'), array('class' => 'span2'));
$form->addElement('style_submit_button','submitAuth', get_lang('LoginEnter'), array('class' => 'btn'));
$html = $form->return_form();
if (api_get_setting('openid_authentication') == 'true') {
include_once 'main/auth/openid/login.php';
$html .= ''.openid_form().'
';
}
return $html;
}
function return_search_block() {
$html = '';
if (api_get_setting('search_enabled') == 'true') {
$html .= '';
$search_btn = get_lang('Search');
$search_content = '
';
$html .= self::show_right_block(get_lang('Search'), $search_content);
}
return $html;
}
function return_classes_block() {
$html = '';
if (api_get_setting('show_groups_to_users') == 'true') {
require_once api_get_path(LIBRARY_PATH).'usergroup.lib.php';
$usergroup = new Usergroup();
$usergroup_list = $usergroup->get_usergroup_by_user(api_get_user_id());
$classes = '';
if (!empty($usergroup_list)) {
foreach($usergroup_list as $group_id) {
$data = $usergroup->get($group_id);
$data['name'] = Display::url($data['name'], api_get_path(WEB_CODE_PATH).'user/classes.php?id='.$data['id']);
$classes .= Display::tag('li', $data['name']);
}
}
if (api_is_platform_admin()) {
$classes .= Display::tag('li', Display::url(get_lang('AddClasses') ,api_get_path(WEB_CODE_PATH).'admin/usergroups.php?action=add'));
}
if (!empty($classes)) {
$classes = Display::tag('ul', $classes, array('class'=>'menulist'));
$html .= self::show_right_block(get_lang('Classes'), $classes);
}
}
return $html;
}
function return_reservation_block() {
$html = '';
if (api_get_setting('allow_reservation') == 'true' && api_is_allowed_to_create_course()) {
$booking_content .='';
$html .= self::show_right_block(get_lang('Booking'), $booking_content);
}
return $html;
}
function return_profile_block() {
$html = '';
$user_id = api_get_user_id();
if (empty($user_id)) {
return;
}
//Always show the user image
$img_array = UserManager::get_user_picture_path_by_id(api_get_user_id(), 'web', true, true);
$no_image = false;
if ($img_array['file'] == 'unknown.jpg') {
$no_image = true;
}
$img_array = UserManager::get_picture_user(api_get_user_id(), $img_array['file'], 50, USER_IMAGE_SIZE_MEDIUM, ' width="90" height="90" ');
$profile_content .= '';
$html = self::show_right_block(get_lang('Profile'), $profile_content);
return $html;
}
function return_navigation_course_links() {
$html = '';
// Deleting the myprofile link.
if (api_get_setting('allow_social_tool') == 'true') {
unset($this->tpl->menu_navigation['myprofile']);
}
// Main navigation section.
// Tabs that are deactivated are added here.
if (!empty($this->tpl->menu_navigation)) {
$main_navigation_content .= '';
$html = self::show_right_block(get_lang('MainNavigation'), $main_navigation_content);
}
return $html;
}
function return_account_block() {
$html = '';
$show_menu = false;
$show_create_link = false;
$show_course_link = false;
$show_digest_link = false;
$display_add_course_link = api_is_allowed_to_create_course() && ($_SESSION['studentview'] != 'studentenview');
if ($display_add_course_link) {
$show_menu = true;
$show_create_link = true;
}
if (api_is_platform_admin() || api_is_course_admin() || api_is_allowed_to_create_course()) {
$show_menu = true;
$show_course_link = true;
} else {
if (api_get_setting('allow_students_to_browse_courses') == 'true') {
$show_menu = true;
$show_course_link = true;
}
}
if (isset($toolsList) && is_array($toolsList) && isset($digest)) {
$show_digest_link = true;
$show_menu = true;
}
// My account section
$my_account_content = '';
if (!empty($my_account_content)) {
$html = self::show_right_block(get_lang('MenuUser'), $my_account_content);
}
return $html;
}
/**
* The most important function here, prints the session and course list
*
* */
function return_courses_and_sessions() {
$courses_tree = array();
$load_history = (isset($_GET['history']) && intval($_GET['history']) == 1) ? true : false;
if ($load_history) {
//Load courses history
$courses_tree = UserManager::get_sessions_by_category(api_get_user_id(), true, true, true);
if (empty($courses_tree[0]) && count($courses_tree) == 1) {
$courses_tree = null;
}
} else {
//Load current courses
$courses_tree = UserManager::get_sessions_by_category(api_get_user_id(), true, false, true);
}
if (!empty($courses_tree)) {
foreach ($courses_tree as $cat => $sessions) {
$courses_tree[$cat]['details'] = SessionManager::get_session_category($cat);
//Get courses
if ($cat == 0) {
$courses_tree[$cat]['courses'] = CourseManager::get_courses_list_by_user_id(api_get_user_id(), false);
}
$courses_tree[$cat]['sessions'] = array_flip(array_flip($sessions));
//Get courses in sessions
if (count($courses_tree[$cat]['sessions']) > 0) {
foreach ($courses_tree[$cat]['sessions'] as $k => $s_id) {
$courses_tree[$cat]['sessions'][$k] = array('details' => SessionManager::fetch($s_id));
$courses_tree[$cat]['sessions'][$k]['courses'] = UserManager::get_courses_list_by_session(api_get_user_id(), $s_id);
}
}
}
}
$html = '';
if ($load_history) {
$html .= Display::page_subheader(get_lang('HistoryTrainingSession'));
if (empty($courses_tree)) {
$html .= get_lang('YouDoNotHaveAnySessionInItsHistory');
}
}
if (is_array($courses_tree)) {
foreach ($courses_tree as $key => $category) {
if ($key == 0) {
// Sessions and courses that are not in a session category.
// If we're not in the history view...
if (!isset($_GET['history'])) { //
//Display special courses
$html .= CourseManager :: display_special_courses(api_get_user_id(), $this->load_directories_preview);
//Display courses
$html .= CourseManager :: display_courses(api_get_user_id(), $this->load_directories_preview);
}
// Independent sessions
foreach ($category['sessions'] as $session) {
// Don't show empty sessions.
if (count($session['courses']) < 1) {
continue;
}
// Courses inside the current session.
$date_session_start = $session['details']['date_start'];
$days_access_before_beginning = $session['details']['nb_days_access_before_beginning'] * 24 * 3600;
$session_now = time();
$html_courses_session = '';
$count_courses_session = 0;
foreach ($session['courses'] as $course) {
$is_coach_course = api_is_coach($session['details']['id'], $course['code']);
$allowed_time = 0;
if ($date_session_start != '0000-00-00') {
if ($is_coach_course) {
$allowed_time = api_strtotime($date_session_start) - $days_access_before_beginning;
} else {
$allowed_time = api_strtotime($date_session_start);
}
}
if ($session_now > $allowed_time) {
//read only and accesible
if (api_get_setting('hide_courses_in_sessions') == 'false') {
$c = CourseManager :: get_logged_user_course_html($course, $session['details']['id'], 'session_course_item', true, $this->load_directories_preview);
$html_courses_session .= $c[1];
}
$count_courses_session++;
}
}
if ($count_courses_session > 0) {
$params = array();
$params['icon'] = Display::return_icon('window_list.png', null, array('id' => 'session_img_'.$session['details']['id']), ICON_SIZE_LARGE);
$session_box = Display :: get_session_title_box($session['details']['id']);
$extra_info = (!empty($session_box['coach']) ? $session_box['coach'].' | ' : '').$session_box['dates'];
if (api_is_drh()) {
$session_link = $session_box['title'];
} else {
$session_link = Display::tag('a', $session_box['title'], array('href'=>api_get_path(WEB_CODE_PATH).'session/?session_id='.$session['details']['id']));
}
$params['title'] = $session_link.$extra_info;
$params['right_actions'] = '';
if (api_is_platform_admin()) {
$params['right_actions'] .= '';
$params['right_actions'] .= Display::return_icon('edit.png', get_lang('Edit'), array('align' => 'absmiddle'),22).'';
}
if (api_get_setting('hide_courses_in_sessions') == 'false') {
// $params['extra'] .= $html_courses_session;
}
$html .= CourseManager::course_item_parent(CourseManager::course_item_html($params, true), $html_courses_session);
}
}
} else {
// All sessions included in.
if (!empty($category['details'])) {
$count_courses_session = 0;
$html_sessions = '';
foreach ($category['sessions'] as $session) {
// Don't show empty sessions.
if (count($session['courses']) < 1) {
continue;
}
$date_session_start = $session['details']['date_start'];
$days_access_before_beginning = $session['details']['nb_days_access_before_beginning'] * 24 * 3600;
$session_now = time();
$html_courses_session = '';
$count = 0;
foreach ($session['courses'] as $course) {
$is_coach_course = api_is_coach($session['details']['id'], $course['code']);
if ($is_coach_course) {
$allowed_time = api_strtotime($date_session_start) - $days_access_before_beginning;
} else {
$allowed_time = api_strtotime($date_session_start);
}
if ($session_now > $allowed_time) {
$c = CourseManager :: get_logged_user_course_html($course, $session['details']['id'], 'session_course_item');
$html_courses_session .= $c[1];
$count_courses_session++;
$count++;
}
}
$params = array();
if ($count > 0) {
$session_box = Display :: get_session_title_box($session['details']['id']);
$params['icon'] = Display::return_icon('window_list.png', null, array('width' => '48px', 'align' => 'absmiddle', 'id' => 'session_img_'.$session['details']['id'])) . ' ';
if (api_is_drh()) {
$session_link = $session_box['title'];
} else {
$session_link = Display::tag('a',$session_box['title'], array('href'=>api_get_path(WEB_CODE_PATH).'session/?session_id='.$session['details']['id']));
}
$params['title'] .= $session_link;
$params['title'] .= '';
$params['title'] .= (!empty($s['coach']) ? $session_box['coach'].' | ' : '').$session_box['dates'];
$params['title'] .= '';
if (api_is_platform_admin()) {
$params['right_actions'] .= ''.Display::return_icon('edit.png', get_lang('Edit'), array('align' => 'absmiddle'),22).'';
}
$html_sessions .= CourseManager::course_item_html($params, true).$html_courses_session;
}
}
if ($count_courses_session > 0) {
$params = array();
$params['icon'] = Display::return_icon('folder_blue.png', null, array(), ICON_SIZE_LARGE);
if (api_is_platform_admin()) {
$params['right_actions'] .= ''.Display::return_icon('edit.png', get_lang('Edit'), array(),22).'';
}
$params['title'] .= $category['details']['name'];
if ($category['details']['date_end'] != '0000-00-00') {
$params['title'] .= sprintf(get_lang('FromDateXToDateY'),$category['details']['date_start'], $category['details']['date_end']);
}
$html .= CourseManager::course_item_parent(CourseManager::course_item_html($params, true), $html_sessions);
}
}
}
}
}
return $html;
}
function return_hot_courses() {
return CourseManager::return_hot_courses();
}
}