test/app/Http/Requests/Site/PaymentRequest.php

<?php

namespace App\Http\Requests\Site;

use App\Http\Requests\Request;

class PaymentRequest extends Request
{
    /**
     * 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()
    {
        if ($this->method() == 'GET') {
            return [];
        }

        return [
            'head' => 'required',
            'head_pic' => 'required',
            'done' => 'required',
            'done_pic' => 'required',
            'reach' => 'required',
            'reach_pic' => 'required',
            'renewal' => 'required',
            'renewal_pic' => 'required',
        ];
    }


}