title = get_string('blockname','block_online_users');
$this->version = 2006030100;
}
function has_config() {return true;}
function get_content() {
global $USER, $CFG, $COURSE;
if ($this->content !== NULL) {
return $this->content;
}
$this->content = new stdClass;
$this->content->text = '';
$this->content->footer = '';
if (empty($this->instance)) {
return $this->content;
}
$timetoshowusers = 300; //Seconds default
if (isset($CFG->block_online_users_timetosee)) {
$timetoshowusers = $CFG->block_online_users_timetosee * 60;
}
$timefrom = time()-$timetoshowusers;
// Get context so we can check capabilities.
$context = get_context_instance(CONTEXT_COURSE, $COURSE->id);
//Calculate if we are in separate groups
$isseparategroups = ($COURSE->groupmode == SEPARATEGROUPS
&& $COURSE->groupmodeforce
&& !has_capability('moodle/site:accessallgroups', $context));
//Get the user current group
$currentgroup = $isseparategroups ? get_current_group($COURSE->id) : NULL;
$groupmembers = "";
$groupselect = "";
//Add this to the SQL to show only group users
if ($currentgroup !== NULL) {
$groupmembers = ", {$CFG->prefix}groups_members gm ";
$groupselect .= " AND u.id = gm.userid AND gm.groupid = '$currentgroup'";
}
if ($COURSE->id == SITEID) { // Site-level
$courseselect = '';
$timeselect = "AND (ul.timeaccess > $timefrom OR u.lastaccess > $timefrom)";
} else {
$courseselect = "AND ul.courseid = '".$COURSE->id."'";
$timeselect = "AND ul.timeaccess > $timefrom";
}
$users = array();
$SQL = "SELECT u.id, u.username, u.firstname, u.lastname, u.picture, u.lastaccess, ul.timeaccess
FROM {$CFG->prefix}user_lastaccess ul,
{$CFG->prefix}user u
$groupmembers
WHERE
ul.userid = u.id
$courseselect
$timeselect
$groupselect ".sql_paging_limit(0,20);
if ($pusers = get_records_sql($SQL)) {
foreach ($pusers as $puser) {
$puser->fullname = fullname($puser);
$users[$puser->id] = $puser;
}
}
//Calculate minutes
$minutes = floor($timetoshowusers/60);
$this->content->text = "(".get_string("periodnminutes","block_online_users",$minutes).")
";
//Now, we have in users, the list of users to show
//Because they are online
if (!empty($users)) {
//Accessibility: Don't want 'Alt' text for the user picture; DO want it for the envelope/message link (existing lang string).
//Accessibility: Converted to
, inherit existing classes & styles.
$this->content->text .= "\n";
foreach ($users as $user) {
$this->content->text .= '- ';
$timeago = format_time(time() - max($user->timeaccess, $user->lastaccess)); //bruno to calculate correctly on frontpage
$this->content->text .= print_user_picture($user->id, $COURSE->id, $user->picture, 16, true).' ';
$this->content->text .= ''.$user->fullname.'';
if (!empty($USER->id) and ($USER->id != $user->id) and !empty($CFG->messaging) and !isguest()) { // Only when logged in
$this->content->text .= "\n".' '
.'
';
}
$this->content->text .= " \n";
}
$this->content->text .= "
\n";
} else {
$this->content->text .= "".get_string("none")."
";
}
return $this->content;
}
}
?>