PHP attendance::take_from_form_data示例

$cm = get_coursemodule_from_id('attendance', $id, 0, false, MUST_EXIST);
$course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
$att = $DB->get_record('attendance', array('id' => $cm->instance), '*', MUST_EXIST);
require_login($course, true, $cm);
$context = context_module::instance($cm->id);
require_capability('mod/attendance:takeattendances', $context);
$pageparams->group = groups_get_activity_group($cm, true);
$pageparams->init($course->id);
$att = new attendance($att, $cm, $course, $PAGE->context, $pageparams);
$allowedgroups = groups_get_activity_allowed_groups($cm);
if (!empty($pageparams->grouptype) && !array_key_exists($pageparams->grouptype, $allowedgroups)) {
    $group = groups_get_group($pageparams->grouptype);
    throw new moodle_exception('cannottakeforgroup', 'attendance', '', $group->name);
}
if (($formdata = data_submitted()) && confirm_sesskey()) {
    $att->take_from_form_data($formdata);
}
$PAGE->set_url($att->url_take());
$PAGE->set_title($course->shortname . ": " . $att->name);
$PAGE->set_heading($course->fullname);
$PAGE->set_cacheable(true);
$PAGE->set_button($OUTPUT->update_module_button($cm->id, 'attendance'));
$PAGE->navbar->add($att->name);
$output = $PAGE->get_renderer('mod_attendance');
$tabs = new attendance_tabs($att);
$sesstable = new attendance_take_data($att);
// Output starts here.
echo $output->header();
echo $output->heading(get_string('attendanceforthecourse', 'attendance') . ' :: ' . format_string($course->fullname));
echo $output->render($tabs);
echo $output->render($sesstable);