id == $sitecontext->id) {
error('Can not override base role capabilities');
}
if (!has_capability('moodle/role:override', $context)) {
error('You do not have permission to change overrides in this context!');
}
if ($courseid) {
if (!$course = get_record('course', 'id', $courseid)) {
error('Bad course ID');
}
} else {
$course = clone($SITE);
$courseid = SITEID;
}
require_login($course);
$baseurl = 'override.php?contextid='.$context->id;
if (!empty($userid)) {
$baseurl .= '&userid='.$userid;
}
if ($courseid != SITEID) {
$baseurl .= '&courseid='.$courseid;
}
if ($cancel) {
redirect($baseurl);
}
/// needed for tabs.php
$overridableroles = get_overridable_roles($context);
$assignableroles = get_assignable_roles($context);
/// Get some language strings
$strroletooverride = get_string('roletooverride', 'role');
$stroverrideusers = get_string('overrideusers', 'role');
$straction = get_string('overrideroles', 'role');
$strcurrentrole = get_string('currentrole', 'role');
$strcurrentcontext = get_string('currentcontext', 'role');
$strparticipants = get_string('participants');
/// Make sure this user can override that role
if ($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));
}
/// get all cababilities
$capabilities = fetch_context_capabilities($context);
/// Process incoming role override
if ($data = data_submitted() and $roleid and confirm_sesskey()) {
$allowed_values = array(CAP_INHERIT, CAP_ALLOW, CAP_PREVENT, CAP_PROHIBIT);
$localoverrides = get_records_select('role_capabilities', "roleid = $roleid AND contextid = $context->id",
'', 'capability, permission, id');
foreach ($capabilities as $cap) {
if (!isset($data->{$cap->name})) {
//cap not specified in form
continue;
}
if (islegacy($data->{$cap->name})) {
continue;
}
$capname = $cap->name;
$value = clean_param($data->{$cap->name}, PARAM_INT);
if (!in_array($value, $allowed_values)) {
continue;
}
if (isset($localoverrides[$capname])) {
// Something exists, so update it
assign_capability($capname, $value, $roleid, $context->id, true);
} else { // insert a record
if ($value != CAP_INHERIT) { // Ignore inherits
assign_capability($capname, $value, $roleid, $context->id);
}
}
}
redirect($baseurl);
}
/// Print the header and tabs
if ($context->contextlevel == CONTEXT_USER) {
/// course header
if ($course->id != SITEID) {
print_header("$fullname", "$fullname",
"wwwroot/course/view.php?id=$course->id\">$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 if ($context->contextlevel==CONTEXT_COURSE and $context->instanceid == SITEID) {
require_once($CFG->libdir.'/adminlib.php');
admin_externalpage_setup('frontpageroles');
admin_externalpage_print_header();
$currenttab = '';
$tabsmode = 'override';
include_once('tabs.php');
} else {
$currenttab = '';
$tabsmode = 'override';
include_once('tabs.php');
}
print_heading_with_help(get_string('overrides', 'role'), 'overrides');
if ($roleid) {
/// prints a form to swap roles
echo '';
echo $strcurrentcontext.': '.print_context_name($context).'
';
$overridableroles = array('0'=>get_string('listallroles', 'role').'...') + $overridableroles;
popup_form("$CFG->wwwroot/$CFG->admin/roles/override.php?userid=$userid&courseid=$courseid&contextid=$contextid&roleid=",
$overridableroles, 'switchrole', $roleid, '', '', '', false, 'self', $strroletooverride);
echo '
';
$parentcontexts = get_parent_contexts($context);
if (!empty($parentcontexts)) {
$parentcontext = array_shift($parentcontexts);
$parentcontext = get_context_instance_by_id($parentcontext);
} else {
$parentcontext = $context; // site level in override??
}
$r_caps = role_context_capabilities($roleid, $parentcontext);
$localoverrides = get_records_select('role_capabilities', "roleid = $roleid AND contextid = $context->id",
'', 'capability, permission, id');
$lang = str_replace('_utf8', '', current_language());
if (!empty($capabilities)) {
// Print the capabilities overrideable in this 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/'.$baseurl);
}
} else { // Print overview table
$table->tablealign = 'center';
$table->cellpadding = 5;
$table->cellspacing = 0;
$table->width = '60%';
$table->head = array(get_string('roles', 'role'), get_string('description'), get_string('overrides', 'role'));
$table->wrap = array('nowrap', '', 'nowrap');
$table->align = array('right', 'left', 'center');
foreach ($overridableroles as $roleid => $rolename) {
$countusers = 0;
$overridecount = count_records_select('role_capabilities', "roleid = $roleid AND contextid = $context->id");
$description = format_string(get_field('role', 'description', 'id', $roleid));
$table->data[] = array(''.$rolename.'', $description, $overridecount);
}
print_table($table);
}
print_footer($course);
?>