IndexAction::fixed PHP Method

    public function fixed()
    {
        $fixed = $_POST['fixed'];
        $map['is_fixed'] = $fixed == 1 ? 0 : 1;
        $result = D('user')->where('uid=' . $this->uid)->save($map);
        D('user')->cleanCache($this->uid);
        if ($result == 1) {
            $this->ajaxReturn(null, '操作成功', 1);
        } else {
            $this->ajaxReturn(null, '操作失败', 0);
        }
    }