id) {
error ('can not override base role capabilities');
}
/// Get some language strings
$strroletooverride = get_string('roletooverride', 'role');
$stroverrideusers = get_string('overrideusers', 'role');
$strpotentialusers = get_string('potentialusers', 'role');
$strexistingusers = get_string('existingusers', 'role');
$straction = get_string('overrideroles', 'role');
$strcurrentrole = get_string('currentrole', 'role');
$strcurrentcontext = get_string('currentcontext', 'role');
$strsearch = get_string('search');
$strshowall = get_string('showall');
$strparticipants = get_string("participants");
$straction = get_string('overrideroles', 'role');
$context = get_record('context', 'id', $contextid);
$overridableroles = get_overridable_roles($context);
/// Make sure this user can override that role
if ($roleid) {
if (!user_can_override($context, $roleid)) {
error ('you can not override this role in this context');
}
}
if ($userid) {
$user = get_record('user', 'id', $userid);
$fullname = fullname($user, has_capability('moodle/site:viewfullnames', $context));
}
/// Print the header and tabs
if ($context->aggregatelevel == CONTEXT_USER) {
/// course header
if ($course->id != SITEID) {
print_header("$fullname", "$fullname",
"id\">$course->shortname ->
wwwroot."/user/index.php?id=$course->id\">$strparticipants -> wwwroot."/user/view.php?id=".$userid."&course=".$course->id."\">$fullname -> $straction",
"", "", true, " ", navmenu($course));
/// site header
} else {
print_header("$course->fullname: $fullname", "$course->fullname",
"wwwroot."/user/view.php?id=".$userid."&course=".$course->id."\">$fullname -> $straction", "", "", true, " ", navmenu($course));
}
$showroles = 1;
$currenttab = 'override';
include_once($CFG->dirroot.'/user/tabs.php');
} else {
$currenttab = '';
$tabsmode = 'override';
include_once('tabs.php');
}
/// Process incoming role override
if ($data = data_submitted()) {
$localoverrides = get_records_select('role_capabilities', "roleid = $roleid AND contextid = $context->id",
'', 'capability, permission, id');
foreach ($data as $capname => $value) {
if ($capname == 'contextid' || $capname == 'roleid') { // ignore contextid and roleid
continue;
}
if (isset($localoverrides[$capname])) { // Something exists, so update it
if ($value == CAP_INHERIT) { // inherit = delete
delete_records('role_capabilities', 'roleid', $roleid, 'contextid', $contextid,
'capability', $capname);
} else {
$localoverride = new object;
$localoverride->id = $localoverrides[$capname]->id;
$localoverride->permission = $value;
$localoverride->timemodified = time();
$localoverride->modifierid = $USER->id;
if (!update_record('role_capabilities', $localoverride)) {
debugging('Could not update a capability!');
}
}
} else { // insert a record
if ($value != CAP_INHERIT) { // Ignore inherits
$override->capability = $capname;
$override->contextid = $contextid;
$override->roleid = $roleid;
$override->permission = $value;
$override->timemodified = time();
$override->modifierid = $USER->id;
if (!insert_record('role_capabilities', $override)) {
debugging('Could not insert a capability!');
}
}
}
}
}
if ($roleid) {
/// prints a form to swap roles
echo '';
$r_caps = role_context_capabilities($roleid, $context);
$localoverrides = get_records_select('role_capabilities', "roleid = $roleid AND contextid = $context->id",
'', 'capability, permission, id');
// Get the capabilities overrideable in this context
if ($capabilities = fetch_context_capabilities($context)) {
print_simple_box_start("center");
include_once('override.html');
print_simple_box_end();
} else {
notice(get_string('nocapabilitiesincontext', 'role'),
$CFG->wwwroot.'/'.$CFG->admin.'/roles/override.php?contextid='.$contextid);
}
} else { // Print overview table
$userparam = (!empty($userid)) ? '&userid='.$userid : '';
$table->tablealign = 'center';
$table->cellpadding = 5;
$table->cellspacing = 0;
$table->width = '20%';
$table->head = array(get_string('roles', 'role'), get_string('overrides', 'role'));
$table->wrap = array('nowrap', 'nowrap');
$table->align = array('right', 'center');
foreach ($overridableroles as $roleid => $rolename) {
$countusers = 0;
$overridecount = count_records_select('role_capabilities', "roleid = $roleid AND contextid = $context->id");
$table->data[] = array(''.$rolename.'', $overridecount);
}
print_table($table);
}
print_footer($course);
?>