Allow course format to overwrite section availability

This issue does not change UI of any existing formats, just adds possibility to the API. To test you need to add to the format_weeks class in course/format/weeks/lib.php the following method: public function section_get_available_hook(section_info $section, &$available, &$availableinfo) { if ($section->section && ($dates = $this->get_section_dates($section)) && time() < $dates->start) { $available = false; $availableinfo = 'Not available yet'; } } Browse the course in weeks format as a student and make sure that future weeks are displayed with "Not available yet" message and without any activities Check gradebook, student reports and/or pages such as /mod/assign/index.php, make sure that activities from the future weeks do not appear there. In the code snippet above change 'Not available yet' to '' (empty string) Browse the course in weeks format as a student and make sure that future weeks are not displayed at all.