/**
* 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.
* @param string $search_term The string that the user submitted, what we are looking for
* @param array $limit
* @return array An array containing a list of all the courses matching the the search term.
*/
public function search_courses($search_term, $limit)
{
$courseTable = Database::get_main_table(TABLE_MAIN_COURSE);
$extraFieldTable = Database::get_main_table(TABLE_EXTRA_FIELD);
$extraFieldValuesTable = Database::get_main_table(TABLE_EXTRA_FIELD_VALUES);
$limitFilter = CourseCategory::getLimitFilterFromArray($limit);
// get course list auto-register
$sql = "SELECT item_id\n FROM {$extraFieldValuesTable} tcfv\n INNER JOIN {$extraFieldTable} tcf ON tcfv.field_id = tcf.id\n WHERE\n tcf.variable = 'special_course' AND\n tcfv.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['item_id'] . '"';
}
}
$without_special_courses = '';
if (!empty($special_course_list)) {
$without_special_courses = ' AND course.code NOT IN (' . implode(',', $special_course_list) . ')';
}
$search_term_safe = Database::escape_string($search_term);
$sql_find = "SELECT * FROM {$courseTable}\n WHERE (\n code LIKE '%" . $search_term_safe . "%' OR\n title LIKE '%" . $search_term_safe . "%' OR\n tutor_name LIKE '%" . $search_term_safe . "%'\n )\n {$without_special_courses}\n ORDER BY title, visual_code ASC\n {$limitFilter}\n ";
if (api_is_multiple_url_enabled()) {
$url_access_id = api_get_current_access_url_id();
if ($url_access_id != -1) {
$tbl_url_rel_course = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
$sql_find = "SELECT *\n FROM {$courseTable} 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 code LIKE '%" . $search_term_safe . "%' OR\n title LIKE '%" . $search_term_safe . "%' OR\n tutor_name LIKE '%" . $search_term_safe . "%'\n )\n {$without_special_courses}\n ORDER BY title, visual_code ASC\n {$limitFilter}\n ";
}
}
$result_find = Database::query($sql_find);
$courses = array();
while ($row = Database::fetch_array($result_find)) {
$row['registration_code'] = !empty($row['registration_code']);
$count_users = count(CourseManager::get_user_list_from_course_code($row['code']));
$count_connections_last_month = Tracking::get_course_connections_count($row['id'], 0, api_get_utc_datetime(time() - 30 * 86400));
$point_info = CourseManager::get_course_ranking($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;
}
