function WSListCourses($params)
{
if (!WSHelperVerifyKey($params)) {
return return_error(WS_ERROR_SECRET_KEY);
}
$course_field_name = isset($params['original_course_id_name']) ? $params['original_course_id_name'] : '';
$courses_result = array();
$category_names = array();
$courses = CourseManager::get_courses_list();
foreach ($courses as $course) {
$course_tmp = array();
$course_tmp['id'] = $course['id'];
$course_tmp['code'] = $course['code'];
$course_tmp['title'] = $course['title'];
$course_tmp['language'] = $course['course_language'];
$course_tmp['visibility'] = $course['visibility'];
// Determining category name
if (!empty($course['category_code']) && $category_names[$course['category_code']]) {
$course_tmp['category_name'] = $category_names[$course['category_code']];
} else {
$category = CourseManager::get_course_category($course['category_code']);
$category_names[$course['category_code']] = $category['name'];
$course_tmp['category_name'] = $category['name'];
}
// Determining number of students registered in course
$course_tmp['number_students'] = CourseManager::get_users_count_in_course($course['code']);
// Determining external course id
$externalCourseId = '';
if ($course_field_name) {
$externalCourseId = CourseManager::get_course_extra_field_value($course_field_name, $course['code']);
}
$course_tmp['external_course_id'] = $externalCourseId;
$courses_result[] = $course_tmp;
}
return $courses_result;
}
/**
* * Get the users to display on the current page.
*/
function get_number_of_users()
{
$keyword = isset($_GET['keyword']) ? $_GET['keyword'] : null;
return CourseManager::get_users_count_in_course(api_get_course_id(), api_get_session_id(), null, null, null, $keyword);
}
/**
* @param string $category_code
* @param int $random_value
* @param array $limit will be used if $random_value is not set.
* This array should contains 'start' and 'length' keys
* @return array
*/
function browseCoursesInCategory($category_code, $random_value = null, $limit = array())
{
$tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
$specialCourseList = CourseManager::get_special_course_list();
$without_special_courses = '';
if (!empty($specialCourseList)) {
$without_special_courses = ' AND course.code NOT IN (' . implode(',', $specialCourseList) . ')';
}
$visibilityCondition = null;
$hidePrivate = api_get_setting('platform.course_catalog_hide_private');
if ($hidePrivate === 'true') {
$courseInfo = api_get_course_info();
$courseVisibility = $courseInfo['visibility'];
$visibilityCondition = ' AND course.visibility <> 1';
}
if (!empty($random_value)) {
$random_value = intval($random_value);
$sql = "SELECT COUNT(*) FROM {$tbl_course}";
$result = Database::query($sql);
list($num_records) = Database::fetch_row($result);
if (api_is_multiple_url_enabled()) {
$url_access_id = api_get_current_access_url_id();
$tbl_url_rel_course = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
$sql = "SELECT COUNT(*) FROM {$tbl_course} course\n INNER JOIN {$tbl_url_rel_course} as url_rel_course\n ON (url_rel_course.c_id = course.id)\n WHERE access_url_id = {$url_access_id} ";
$result = Database::query($sql);
list($num_records) = Database::fetch_row($result);
$sql = "SELECT course.id FROM {$tbl_course} course\n INNER JOIN {$tbl_url_rel_course} as url_rel_course\n ON (url_rel_course.c_id = course.id)\n WHERE\n access_url_id = {$url_access_id} AND\n RAND()*{$num_records}< {$random_value}\n {$without_special_courses} {$visibilityCondition}\n ORDER BY RAND()\n LIMIT 0, {$random_value}";
} else {
$sql = "SELECT id FROM {$tbl_course} course\n WHERE RAND()*{$num_records}< {$random_value} {$without_special_courses} {$visibilityCondition}\n ORDER BY RAND()\n LIMIT 0, {$random_value}";
}
$result = Database::query($sql);
$id_in = null;
while (list($id) = Database::fetch_row($result)) {
if ($id_in) {
$id_in .= ",{$id}";
} else {
$id_in = "{$id}";
}
}
if ($id_in === null) {
return array();
}
$sql = "SELECT * FROM {$tbl_course} WHERE id IN({$id_in})";
} else {
$limitFilter = self::getLimitFilterFromArray($limit);
$category_code = Database::escape_string($category_code);
if (empty($category_code) || $category_code == "ALL") {
$sql = "SELECT * FROM {$tbl_course}\n WHERE\n 1=1\n {$without_special_courses}\n {$visibilityCondition}\n ORDER BY title {$limitFilter} ";
} else {
if ($category_code == 'NONE') {
$category_code = '';
}
$sql = "SELECT * FROM {$tbl_course}\n WHERE\n category_code='{$category_code}'\n {$without_special_courses}\n {$visibilityCondition}\n ORDER BY title {$limitFilter} ";
}
//showing only the courses of the current Chamilo access_url_id
if (api_is_multiple_url_enabled()) {
$url_access_id = api_get_current_access_url_id();
$tbl_url_rel_course = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
if ($category_code != "ALL") {
$sql = "SELECT * FROM {$tbl_course} as course\n INNER JOIN {$tbl_url_rel_course} as url_rel_course\n ON (url_rel_course.c_id = course.id)\n WHERE\n access_url_id = {$url_access_id} AND\n category_code='{$category_code}'\n {$without_special_courses}\n {$visibilityCondition}\n ORDER BY title {$limitFilter}";
} else {
$sql = "SELECT * FROM {$tbl_course} as course\n INNER JOIN {$tbl_url_rel_course} as url_rel_course\n ON (url_rel_course.c_id = course.id)\n WHERE\n access_url_id = {$url_access_id}\n {$without_special_courses}\n {$visibilityCondition}\n ORDER BY title {$limitFilter}";
}
}
}
$result = Database::query($sql);
$courses = array();
while ($row = Database::fetch_array($result)) {
$row['registration_code'] = !empty($row['registration_code']);
$count_users = CourseManager::get_users_count_in_course($row['code']);
$count_connections_last_month = Tracking::get_course_connections_count($row['id'], 0, api_get_utc_datetime(time() - 30 * 86400));
if ($row['tutor_name'] == '0') {
$row['tutor_name'] = get_lang('NoManager');
}
$point_info = CourseManager::get_course_ranking($row['id'], 0);
$courses[] = array('real_id' => $row['id'], 'point_info' => $point_info, 'code' => $row['code'], 'directory' => $row['directory'], 'visual_code' => $row['visual_code'], 'title' => $row['title'], 'tutor' => $row['tutor_name'], 'subscribe' => $row['subscribe'], 'unsubscribe' => $row['unsubscribe'], 'registration_code' => $row['registration_code'], 'creation_date' => $row['creation_date'], 'visibility' => $row['visibility'], 'count_users' => $count_users, 'count_connections' => $count_connections_last_month);
}
return $courses;
}
/**
* @param string $category_code
* @param int $random_value
* @param array $limit will be used if $random_value is not set.
* This array should contains 'start' and 'length' keys
* @return array
*/
function browseCoursesInCategory($category_code, $random_value = null, $limit = array())
{
global $_configuration;
$tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
$TABLE_COURSE_FIELD = Database::get_main_table(TABLE_MAIN_COURSE_FIELD);
$TABLE_COURSE_FIELD_VALUE = Database::get_main_table(TABLE_MAIN_COURSE_FIELD_VALUES);
// Get course list auto-register
$sql = "SELECT course_code\n FROM {$TABLE_COURSE_FIELD_VALUE} tcfv\n INNER JOIN {$TABLE_COURSE_FIELD} tcf ON tcfv.field_id = tcf.id\n WHERE tcf.field_variable = 'special_course' AND tcfv.field_value = 1 ";
$special_course_result = Database::query($sql);
if (Database::num_rows($special_course_result) > 0) {
$special_course_list = array();
while ($result_row = Database::fetch_array($special_course_result)) {
$special_course_list[] = '"' . $result_row['course_code'] . '"';
}
}
$without_special_courses = '';
if (!empty($special_course_list)) {
$without_special_courses = ' AND course.code NOT IN (' . implode(',', $special_course_list) . ')';
}
$visibilityCondition = null;
if (isset($_configuration['course_catalog_hide_private'])) {
if ($_configuration['course_catalog_hide_private'] == true) {
$courseInfo = api_get_course_info();
$courseVisibility = $courseInfo['visibility'];
$visibilityCondition = ' AND course.visibility <> 1';
}
}
if (!empty($random_value)) {
$random_value = intval($random_value);
$sql = "SELECT COUNT(*) FROM {$tbl_course}";
$result = Database::query($sql);
list($num_records) = Database::fetch_row($result);
if (api_is_multiple_url_enabled()) {
$url_access_id = api_get_current_access_url_id();
$tbl_url_rel_course = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
$sql = "SELECT COUNT(*) FROM {$tbl_course} course\n INNER JOIN {$tbl_url_rel_course} as url_rel_course ON (url_rel_course.course_code=course.code)\n WHERE access_url_id = {$url_access_id} ";
$result = Database::query($sql);
list($num_records) = Database::fetch_row($result);
$sql = "SELECT course.id FROM {$tbl_course} course INNER JOIN {$tbl_url_rel_course} as url_rel_course\n ON (url_rel_course.course_code=course.code)\n WHERE access_url_id = {$url_access_id} AND\n RAND()*{$num_records}< {$random_value}\n {$without_special_courses} {$visibilityCondition}\n ORDER BY RAND() LIMIT 0, {$random_value}";
} else {
$sql = "SELECT id FROM {$tbl_course} course\n WHERE RAND()*{$num_records}< {$random_value} {$without_special_courses} {$visibilityCondition}\n ORDER BY RAND() LIMIT 0, {$random_value}";
}
$result = Database::query($sql);
$id_in = null;
while (list($id) = Database::fetch_row($result)) {
if ($id_in) {
$id_in .= ",{$id}";
} else {
$id_in = "{$id}";
}
}
$sql = "SELECT * FROM {$tbl_course} WHERE id IN({$id_in})";
} else {
$limitFilter = getLimitFilterFromArray($limit);
$category_code = Database::escape_string($category_code);
if (empty($category_code) || $category_code == "ALL") {
$sql = "SELECT * FROM {$tbl_course}\n WHERE 1=1 {$without_special_courses} {$visibilityCondition}\n ORDER BY title {$limitFilter} ";
} else {
if ($category_code == 'NONE') {
$category_code = '';
}
$sql = "SELECT * FROM {$tbl_course}\n WHERE category_code='{$category_code}' {$without_special_courses} {$visibilityCondition}\n ORDER BY title {$limitFilter} ";
}
//showing only the courses of the current Chamilo access_url_id
if (api_is_multiple_url_enabled()) {
$url_access_id = api_get_current_access_url_id();
$tbl_url_rel_course = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
if ($category_code != "ALL") {
$sql = "SELECT * FROM {$tbl_course} as course INNER JOIN {$tbl_url_rel_course} as url_rel_course\n ON (url_rel_course.course_code=course.code)\n WHERE access_url_id = {$url_access_id} AND category_code='{$category_code}' {$without_special_courses} {$visibilityCondition}\n ORDER BY title {$limitFilter}";
} else {
$sql = "SELECT * FROM {$tbl_course} as course INNER JOIN {$tbl_url_rel_course} as url_rel_course\n ON (url_rel_course.course_code=course.code)\n WHERE access_url_id = {$url_access_id} {$without_special_courses} {$visibilityCondition}\n ORDER BY title {$limitFilter}";
}
}
}
$result = Database::query($sql);
$courses = array();
while ($row = Database::fetch_array($result)) {
$row['registration_code'] = !empty($row['registration_code']);
$count_users = CourseManager::get_users_count_in_course($row['code']);
$count_connections_last_month = Tracking::get_course_connections_count($row['code'], 0, api_get_utc_datetime(time() - 30 * 86400));
if ($row['tutor_name'] == '0') {
$row['tutor_name'] = get_lang('NoManager');
}
$point_info = CourseManager::get_course_ranking($row['id'], 0);
$courses[] = array('real_id' => $row['id'], 'point_info' => $point_info, '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' => $row['registration_code'], 'creation_date' => $row['creation_date'], 'visibility' => $row['visibility'], 'count_users' => $count_users, 'count_connections' => $count_connections_last_month);
}
return $courses;
}
