$nottaken = !$sess->lasttaken && has_capability('mod/attendance:takeattendances', $context);
        $canchange = $sess->lasttaken && has_capability('mod/attendance:changeattendances', $context);
        if ($nottaken || $canchange) {
            redirect($att->url_take(array('sessionid' => $sess->id, 'grouptype' => $sess->groupid)));
        }
    } else {
        if ($size > 1) {
            $att->curdate = $today;
            // Temporarily set $view for single access to page from block.
            $att->view = ATT_VIEW_DAYS;
        }
    }
}
$PAGE->set_url($att->url_manage());
$PAGE->set_title($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, attendance_tabs::TAB_SESSIONS);
$filtercontrols = new attendance_filter_controls($att);
$sesstable = new attendance_manage_data($att);
// Output starts here.
echo $output->header();
echo $output->heading(get_string('attendanceforthecourse', 'attendance') . ' :: ' . format_string($course->fullname));
mod_attendance_notifyqueue::show();
echo $output->render($tabs);
echo $output->render($filtercontrols);
echo $output->render($sesstable);
echo $output->footer();
         // Redirect to the sessions tab always showing all sessions.
         $SESSION->attcurrentattview[$cm->course] = ATT_VIEW_ALL;
         redirect($att->url_manage());
     }
     break;
 case att_sessions_page_params::ACTION_UPDATE:
     $sessionid = required_param('sessionid', PARAM_INT);
     $url = $att->url_sessions(array('action' => att_sessions_page_params::ACTION_UPDATE, 'sessionid' => $sessionid));
     $formparams['sessionid'] = $sessionid;
     $mform = new mod_attendance_update_form($url, $formparams);
     if ($mform->is_cancelled()) {
         redirect($att->url_manage());
     }
     if ($formdata = $mform->get_data()) {
         $att->update_session_from_form_data($formdata, $sessionid);
         mod_attendance_notifyqueue::notify_success(get_string('sessionupdated', 'attendance'));
         redirect($att->url_manage());
     }
     break;
 case att_sessions_page_params::ACTION_DELETE:
     $sessionid = required_param('sessionid', PARAM_INT);
     $confirm = optional_param('confirm', null, PARAM_INT);
     if (isset($confirm) && confirm_sesskey()) {
         $att->delete_sessions(array($sessionid));
         if ($att->grade > 0) {
             att_update_all_users_grades($att->id, $att->course, $att->context, $cm);
         }
         redirect($att->url_manage(), get_string('sessiondeleted', 'attendance'));
     }
     $sessinfo = $att->get_session_info($sessionid);
     $message = get_string('deletecheckfull', '', get_string('session', 'attendance'));