dirroot.'/mod/forum/lib.php');
define("MAX_USERS_PER_PAGE", 5000);
$contextid = required_param('contextid',PARAM_INT); // context id
$roleid = optional_param('roleid', 0, PARAM_INT); // required role id
$add = optional_param('add', 0, PARAM_BOOL);
$remove = optional_param('remove', 0, PARAM_BOOL);
$showall = optional_param('showall', 0, PARAM_BOOL);
$searchtext = optional_param('searchtext', '', PARAM_RAW); // search string
$previoussearch = optional_param('previoussearch', 0, PARAM_BOOL);
$hidden = optional_param('hidden', 0, PARAM_BOOL); // whether this assignment is hidden
$previoussearch = ($searchtext != '') or ($previoussearch) ? 1:0;
$timestart = optional_param('timestart', 0, PARAM_INT);
$timeend = optional_param('timened', 0, PARAM_INT);
$userid = optional_param('userid', 0, PARAM_INT); // needed for user tabs
$courseid = optional_param('courseid', 0, PARAM_INT); // needed for user tabs
if ($courseid) {
$course = get_record('course', 'id', $courseid);
}
if (! $site = get_site()) {
redirect("$CFG->wwwroot/$CFG->admin/index.php");
}
if (! $context = get_context_instance_by_id($contextid)) {
error("Context ID was incorrect (can't find it)");
}
require_capability('moodle/role:assign', $context);
$strassignusers = get_string('assignusers', 'role');
$strpotentialusers = get_string('potentialusers', 'role');
$strexistingusers = get_string('existingusers', 'role');
$straction = get_string('assignroles', 'role');
$strroletoassign = get_string('roletoassign', 'role');
$strcurrentcontext = get_string('currentcontext', 'role');
$strsearch = get_string('search');
$strshowall = get_string('showall');
$context = get_record('context', 'id', $contextid);
$assignableroles = get_assignable_roles($context);
/// Make sure this user can assign that role
if ($roleid) {
if (!user_can_assign($context, $roleid)) {
error ('you can not override this role in this context');
}
}
$participants = get_string("participants");
$user = get_record('user', 'id', $userid);
$fullname = fullname($user, has_capability('moodle/site:viewfullnames', $context));
/// Print the header and tabs
if ($context->aggregatelevel == CONTEXT_USERID) {
/// course header
if ($courseid!= SITEID) {
print_header("$fullname", "$fullname",
"id\">$course->shortname ->
wwwroot."/user/index.php?id=$course->id\">$participants -> wwwroot."/user/view.php?id=".$userid."&course=".$courseid."\">$fullname ->".get_string('assign', 'roles'),
"", "", true, " ", navmenu($course));
/// site header
} else {
print_header("$course->fullname: $fullname", "$course->fullname",
"wwwroot."/user/view.php?id=".$userid."&course=".$courseid."\">$fullname -> $straction", "", "", true, " ", navmenu($course));
}
$showroles = 1;
$currenttab = 'assign';
include_once($CFG->dirroot.'/user/tabs.php');
} else {
$currenttab = '';
$tabsmode = 'assign';
include_once('tabs.php');
}
/// Process incoming role assignment
if ($frm = data_submitted()) {
if ($add and !empty($frm->addselect) and confirm_sesskey()) {
$timemodified = time();
foreach ($frm->addselect as $adduser) {
$adduser = clean_param($adduser, PARAM_INT);
if (! role_assign($roleid, $adduser, 0, $context->id, $timestart, $timeend, $hidden)) {
error("Could not add user with id $adduser to this role!");
}
}
} else if ($remove and !empty($frm->removeselect) and confirm_sesskey()) {
foreach ($frm->removeselect as $removeuser) {
$removeuser = clean_param($removeuser, PARAM_INT);
if (! role_unassign($roleid, $removeuser, 0, $context->id)) {
error("Could not remove user with id $removeuser from this role!");
}
}
} else if ($showall) {
$searchtext = '';
$previoussearch = 0;
}
}
/// Get all existing participants in this course.
$existinguserarray = array();
$SQL = "select u.* from {$CFG->prefix}role_assignments r, {$CFG->prefix}user u where contextid = $context->id and roleid = $roleid and u.id = r.userid"; // join now so that we can just use fullname() later
if (!$contextusers = get_records_sql($SQL)) {
$contextusers = array();
}
foreach ($contextusers as $contextuser) {
$existinguserarray[] = $contextuser->id;
}
$existinguserlist = implode(',', $existinguserarray);
unset($existinguserarray);
/// Get search results excluding any users already in this course
if (($searchtext != '') and $previoussearch) {
$searchusers = get_users(true, $searchtext, true, $existinguserlist, 'firstname ASC, lastname ASC',
'', '', 0, 99999, 'id, firstname, lastname, email');
$usercount = get_users(false, '', true, $existinguserlist);
}
/// If no search results then get potential students for this course excluding users already in course
if (empty($searchusers)) {
$usercount = get_users(false, '', true, $existinguserlist, 'firstname ASC, lastname ASC', '', '',
0, 99999, 'id, firstname, lastname, email') ;
$users = array();
if ($usercount <= MAX_USERS_PER_PAGE) {
$users = get_users(true, '', true, $existinguserlist, 'firstname ASC, lastname ASC', '', '',
0, 99999, 'id, firstname, lastname, email');
}
}
// prints a form to swap roles
print ('');
if ($roleid) {
print_simple_box_start("center");
include('assign.html');
print_simple_box_end();
}
print_footer($course);
?>