public static function select_user_roles()
 {
     $roles = array(0 => LL('cms::form.select', CMSLANG));
     $data = self::where('level', '<=', ROLE)->get();
     foreach ($data as $role) {
         $roles[$role->id] = ucfirst(LABEL('cms::role.', $role->name));
     }
     return $roles;
 }
 public static function select_extra_id()
 {
     $extras = Config::get('cms::settings.extra_id');
     $ext = array();
     foreach ($extras as $key => $value) {
         $ext[$key] = ucfirst(LABEL('cms::label.', $value));
     }
     return $ext;
 }