laravel8.5用自带的auth登录功能,默认验证的password密码字段,怎么修改

    /**
     * Get the password for the user.
     *
     * @return string
     */
    public function getAuthPassword()
    {
        return $this->password;
    }Copy

    /**
     * Validate the user login request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return void
     *
     * @throws \Illuminate\Validation\ValidationException
     */
    protected function validateLogin(Request $request)
    {
        $request->validate([
            $this->username() => 'required|string',
            'password_new' => 'required|string',
        ]);
    }

    /**
 * Get the needed authorization credentials from the request. * * @param \Illuminate\Http\Request $request
  * @return array
 */protected function credentials(Request $request)
{
  return $request->only($this->username(), 'password_new');
}Copy