vuefilemanager/app/Http/Requests/Oasis/StoreClientRequest.php

<?php
namespace App\Http\Requests\Oasis;

use Illuminate\Foundation\Http\FormRequest;

class StoreClientRequest 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 [
            'avatar' => 'sometimes|nullable',
            'name' => 'required|string',
            'email' => 'sometimes|email|nullable',
            'phone_number' => 'sometimes|string|nullable',
            'address' => 'required|string',
            'city' => 'required|string',
            'postal_code' => 'required|string',
            'country' => 'required|string',
            'ico' => 'required|string',
            'dic' => 'required|string|nullable',
            'ic_dph' => 'sometimes|string|nullable',
        ];
    }
}