function action_default()
{
global $CURMAN;
$roleid = $this->optional_param('role', '', PARAM_INT);
$context = $this->get_context();
if ($roleid) {
if (!user_can_assign($context, $roleid)) {
print_error('nopermissions', 'error');
}
return parent::action_default();
} else {
$decorators = array('name' => new role_name_decorator(clone $this));
$assignableroles = get_assignable_roles($context, 'name', ROLENAME_BOTH);
$roles = array();
foreach ($assignableroles as $roleid => $rolename) {
$rec = new stdClass();
$rec->id = $roleid;
$rec->name = $rolename;
$rec->description = format_string(get_field('role', 'description', 'id', $roleid));
$rec->count = count_role_users($roleid, $context);
$roles[$roleid] = $rec;
}
$table = new nosort_table($roles, array('name' => get_string('name'), 'description' => get_string('description'), 'count' => get_string('users')), $this->get_moodle_url(), $decorators);
$table->print_table();
}
}
