url - Laravel FormRequest 从 url 获取参数

Question

在我的update方法中，我FormRequest用来验证输入字段。我还需要为unique验证规则传递和附加参数。

我正在尝试$subscriber从url.

订阅者控制器.php

class SubscriberController extends Controller
{
  public function update(UpdateSubscriberRequest $request, $subscriber)
  {
    ...
  }
}

更新订阅者请求.php

class UpdateSubscriberRequest extends FormRequest
{
  private $data       = [];
  private $subscriber = null;

  public function __construct()
  {
    $this->data       = request()->all();
    $this->subscriber = request()->route('subscriber');
  }

  public function rules()
  {
    return [
      ...

      'email'  => [
        'required', 
        ...
        "unique:subscribers,email,{$this->subscriber},token,company_id," 
          . session()->get('COMPANY_ID')
      ],
      'mobile' => [
        'required', 
        ...
        "unique:subscribers,mobile,{$this->subscriber},token,company_id,"
          . session()->get('COMPANY_ID')
      ],

      ...
    ];
  }
}

虽然代码工作正常。但是，这是正确的方法吗..？