mirror of
https://github.com/moodle/moodle.git
synced 2025-01-18 22:08:20 +01:00
179 lines
8.0 KiB
PHP
179 lines
8.0 KiB
PHP
<?php //$Id$
|
|
|
|
/**
|
|
* This block needs to be reworked.
|
|
* The new roles system does away with the concepts of rigid student and
|
|
* teacher roles.
|
|
*/
|
|
class block_online_users extends block_base {
|
|
function init() {
|
|
$this->title = get_string('blockname','block_online_users');
|
|
$this->version = 2007101510;
|
|
}
|
|
|
|
function has_config() {return true;}
|
|
|
|
function get_content() {
|
|
global $USER, $CFG, $DB;
|
|
|
|
if ($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;
|
|
}
|
|
$timefrom = 100 * floor((time()-$timetoshowusers) / 100); // Round to nearest 100 seconds for better query cache
|
|
|
|
// Get context so we can check capabilities.
|
|
$context = $this->page->context;
|
|
|
|
// TODO - temporary hack to get the block context only if it already exists.
|
|
global $DB;
|
|
if ($DB->record_exists('context', array('contextlevel' => CONTEXT_BLOCK, 'instanceid' => $this->instance->id))) {
|
|
$context = get_context_instance(CONTEXT_BLOCK, $this->instance->id);
|
|
} else {
|
|
$context = get_context_instance(CONTEXT_SYSTEM); // pinned blocks do not have own context
|
|
}
|
|
|
|
//Calculate if we are in separate groups
|
|
$isseparategroups = ($this->page->course->groupmode == SEPARATEGROUPS
|
|
&& $this->page->course->groupmodeforce
|
|
&& !has_capability('moodle/site:accessallgroups', $context));
|
|
|
|
//Get the user current group
|
|
$currentgroup = $isseparategroups ? groups_get_course_group($this->page->course) : NULL;
|
|
|
|
$groupmembers = "";
|
|
$groupselect = "";
|
|
$rafrom = "";
|
|
$rawhere = "";
|
|
$params = array();
|
|
|
|
//Add this to the SQL to show only group users
|
|
if ($currentgroup !== NULL) {
|
|
$groupmembers = ", {groups_members} gm";
|
|
$groupselect = "AND u.id = gm.userid AND gm.groupid = :currentgroup";
|
|
$params['currentgroup'] = $currentgroup;
|
|
}
|
|
|
|
if ($this->page->course->id == SITEID) { // Site-level
|
|
$sql = "SELECT u.id, u.username, u.firstname, u.lastname, u.picture, MAX(u.lastaccess) AS lastaccess
|
|
FROM {user} u $groupmembers
|
|
WHERE u.lastaccess > $timefrom
|
|
$groupselect
|
|
GROUP BY u.id, u.username, u.firstname, u.lastname, u.picture
|
|
ORDER BY lastaccess DESC ";
|
|
|
|
$csql = "SELECT COUNT(u.id), u.id
|
|
FROM {user} u $groupmembers
|
|
WHERE u.lastaccess > $timefrom
|
|
$groupselect
|
|
GROUP BY u.id";
|
|
|
|
} else { // Course-level
|
|
if (!has_capability('moodle/role:viewhiddenassigns', $context)) {
|
|
$pcontext = get_related_contexts_string($context);
|
|
$rafrom = ", {role_assignments} ra";
|
|
$rawhere = " AND ra.userid = u.id AND ra.contextid $pcontext AND ra.hidden = 0";
|
|
}
|
|
|
|
$sql = "SELECT u.id, u.username, u.firstname, u.lastname, u.picture, MAX(ul.timeaccess) AS lastaccess
|
|
FROM {user_lastaccess} ul, {user} u $groupmembers $rafrom
|
|
WHERE ul.timeaccess > $timefrom
|
|
AND u.id = ul.userid
|
|
AND ul.courseid = :courseid
|
|
$groupselect $rawhere
|
|
GROUP BY u.id, u.username, u.firstname, u.lastname, u.picture
|
|
ORDER BY lastaccess DESC";
|
|
|
|
$csql = "SELECT u.id
|
|
FROM {user_lastaccess} ul, {user} u $groupmembers $rafrom
|
|
WHERE ul.timeaccess > $timefrom
|
|
AND u.id = ul.userid
|
|
AND ul.courseid = :courseid
|
|
$groupselect $rawhere
|
|
GROUP BY u.id";
|
|
|
|
$params['courseid'] = $this->page->course->id;
|
|
}
|
|
|
|
//Calculate minutes
|
|
$minutes = floor($timetoshowusers/60);
|
|
|
|
// Verify if we can see the list of users, if not just print number of users
|
|
if (!has_capability('block/online_users:viewlist', $context)) {
|
|
if (!$usercount = $DB->count_records_sql($csql, $params)) {
|
|
$usercount = get_string("none");
|
|
}
|
|
$this->content->text = "<div class=\"info\">".get_string("periodnminutes","block_online_users",$minutes).": $usercount</div>";
|
|
return $this->content;
|
|
}
|
|
|
|
if ($users = $DB->get_records_sql($sql, $params, 0, 50)) { // We'll just take the most recent 50 maximum
|
|
foreach ($users as $user) {
|
|
$users[$user->id]->fullname = fullname($user);
|
|
}
|
|
} else {
|
|
$users = array();
|
|
}
|
|
|
|
if (count($users) < 50) {
|
|
$usercount = "";
|
|
} else {
|
|
$usercount = $DB->count_records_sql($csql, $params);
|
|
$usercount = ": $usercount";
|
|
}
|
|
|
|
$this->content->text = "<div class=\"info\">(".get_string("periodnminutes","block_online_users",$minutes)."$usercount)</div>";
|
|
|
|
//Now, we have in users, the list of users to show
|
|
//Because they are online
|
|
if (!empty($users)) {
|
|
//Accessibility: Don't want 'Alt' text for the user picture; DO want it for the envelope/message link (existing lang string).
|
|
//Accessibility: Converted <div> to <ul>, inherit existing classes & styles.
|
|
$this->content->text .= "<ul class='list'>\n";
|
|
if (!empty($USER->id) && has_capability('moodle/site:sendmessage', $context)
|
|
&& !empty($CFG->messaging) && !isguest()) {
|
|
$canshowicon = true;
|
|
} else {
|
|
$canshowicon = false;
|
|
}
|
|
foreach ($users as $user) {
|
|
$this->content->text .= '<li class="listentry">';
|
|
$timeago = format_time(time() - $user->lastaccess); //bruno to calculate correctly on frontpage
|
|
if ($user->username == 'guest') {
|
|
$this->content->text .= '<div class="user">'.print_user_picture($user->id, $this->page->course->id, $user->picture, 16, true, false, '', false);
|
|
$this->content->text .= get_string('guestuser').'</div>';
|
|
|
|
} else {
|
|
$this->content->text .= '<div class="user"><a href="'.$CFG->wwwroot.'/user/view.php?id='.$user->id.'&course='.$this->page->course->id.'" title="'.$timeago.'">';
|
|
$this->content->text .= print_user_picture($user->id, $this->page->course->id, $user->picture, 16, true, false, '', false);
|
|
$this->content->text .= $user->fullname.'</a></div>';
|
|
}
|
|
if ($canshowicon and ($USER->id != $user->id) and $user->username != 'guest') { // Only when logged in and messaging active etc
|
|
$this->content->text .= '<div class="message"><a title="'.get_string('messageselectadd').'" href="'.$CFG->wwwroot.'/message/discussion.php?id='.$user->id.'" onclick="this.target=\'message_'.$user->id.'\';return openpopup(\'/message/discussion.php?id='.$user->id.'\', \'message_'.$user->id.'\', \'menubar=0,location=0,scrollbars,status,resizable,width=400,height=500\', 0);">'
|
|
.'<img class="iconsmall" src="'.$CFG->pixpath.'/t/message.gif" alt="'. get_string('messageselectadd') .'" /></a></div>';
|
|
}
|
|
$this->content->text .= "</li>\n";
|
|
}
|
|
$this->content->text .= '</ul><div class="clearer"><!-- --></div>';
|
|
} else {
|
|
$this->content->text .= "<div class=\"info\">".get_string("none")."</div>";
|
|
}
|
|
|
|
return $this->content;
|
|
}
|
|
}
|
|
|
|
?>
|