/**
* Used in course/lib.php because we need to disable the completion JS if
* a completion value affects a conditional activity.
*
* @param \stdClass $course Moodle course object
* @param int $cmid Course-module id
* @return bool True if this is used in a condition, false otherwise
*/
public static function completion_value_used($course, $cmid)
{
// Have we already worked out a list of required completion values
// for this course? If so just use that.
if (!array_key_exists($course->id, self::$modsusedincondition)) {
// We don't have data for this course, build it.
$modinfo = get_fast_modinfo($course);
self::$modsusedincondition[$course->id] = array();
// Activities.
foreach ($modinfo->cms as $othercm) {
if (is_null($othercm->availability)) {
continue;
}
$ci = new \core_availability\info_module($othercm);
$tree = $ci->get_availability_tree();
foreach ($tree->get_all_children('availability_completion\\condition') as $cond) {
self::$modsusedincondition[$course->id][$cond->cmid] = true;
}
}
// Sections.
foreach ($modinfo->get_section_info_all() as $section) {
if (is_null($section->availability)) {
continue;
}
$ci = new \core_availability\info_section($section);
$tree = $ci->get_availability_tree();
foreach ($tree->get_all_children('availability_completion\\condition') as $cond) {
self::$modsusedincondition[$course->id][$cond->cmid] = true;
}
}
}
return array_key_exists($cmid, self::$modsusedincondition[$course->id]);
}
/**
* Changes all date restrictions on a course by the specified shift amount.
* Used by the course reset feature.
*
* @param int $courseid Course id
* @param int $timeshift Offset in seconds
*/
public static function update_all_dates($courseid, $timeshift)
{
global $DB;
$modinfo = get_fast_modinfo($courseid);
$anychanged = false;
// Adjust dates from all course modules.
foreach ($modinfo->cms as $cm) {
if (!$cm->availability) {
continue;
}
$info = new \core_availability\info_module($cm);
$tree = $info->get_availability_tree();
$dates = $tree->get_all_children('availability_date\\condition');
$changed = false;
foreach ($dates as $date) {
$date->time += $timeshift;
$changed = true;
}
// Save the updated course module.
if ($changed) {
$DB->set_field('course_modules', 'availability', json_encode($tree->save()), array('id' => $cm->id));
$anychanged = true;
}
}
// Adjust dates from all course sections.
foreach ($modinfo->get_section_info_all() as $section) {
if (!$section->availability) {
continue;
}
$info = new \core_availability\info_section($section);
$tree = $info->get_availability_tree();
$dates = $tree->get_all_children('availability_date\\condition');
$changed = false;
foreach ($dates as $date) {
$date->time += $timeshift;
$changed = true;
}
// Save the updated course module.
if ($changed) {
$DB->set_field('course_sections', 'availability', json_encode($tree->save()), array('id' => $section->id));
$anychanged = true;
}
}
// Ensure course cache is cleared if required.
if ($anychanged) {
rebuild_course_cache($courseid, true);
}
}
