Php 如果不需要字段，则Laravel不进行验证

我已获得以下请求验证：

<?php

namespace App\Http\Requests;

use Illuminate\Foundation\Http\FormRequest;

class OwnerEstate extends FormRequest
{
    /**
     * Determine if the user is authorized to make this request.
     *
     * @return bool
     */
    public function authorize()
    {
        return true;
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array
     */
    public function rules()
    {
        return [
            'firstname' => 'required_if:type,individual',
            'secondname'=> 'required_if:type,individual',
            'lastname' => 'required_if:type,individual',
            'pin' => 'required_if:type,individual|digits:10',

            'name' => 'required_if:type,legal-entity',
            'eik' => 'required_if:type,legal-entity|digits:9'
        ];
    }
}

---

数字：如果
，则10
与
必填项完全分开，因此它将验证该字段是否必填。但是，如果您还希望允许null或空值（假设该字段不是必需的），则可以添加规则
nullable