Laravel，更新密码，然后将旧密码保存到表中

public function updatePassword($newPassword)
{
    // 保存旧密码到表中
    $oldPassword = $this->password;
    $this->saveOldPassword($oldPassword);

    // 更新密码
    $this->password = bcrypt($newPassword);
    $this->save();
}

private function saveOldPassword($oldPassword)
{
    $passwordHistory = new PasswordHistory();
    $passwordHistory->user_id = $this->id;
    $passwordHistory->old_password = $oldPassword;
    $passwordHistory->save();
}

public function updatePassword(Request $request)
{
    $user = Auth::user();
    $user->updatePassword($request->input('new_password'));

    // 其他更新密码后的逻辑
}