cssd-back/app/Http/Requests/StoreLabelRequest.php

<?php

namespace App\Http\Requests;

use App\Label;
use Illuminate\Validation\Rule;
use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Contracts\Validation\Validator;


class StoreLabelRequest extends FormRequest
{
    public function authorize()
    {
        if ($this->method() == 'POST') {
            return auth('api')->check() &&  auth('api')->user()->can('store', Label::class);
        } else {
            $Label = $this->route('Label');
            return auth('api')->check() && $Label && auth('api')->user()->can('update', $Label);
        }
    }

    public function rules()
    {
        switch ($this->method()) {
            case 'POST': {
                return [
                    'sterile_date' => 'required|date',
                    'expire_date' => 'required|date',
                    'sterilizer_id' => 'required',
                    'cycle_number' => 'required',
                    'lot_number' => 'required',
                    'package_id' => 'required',
                ];
                break;
            }
            case 'PUT':
            case 'PATCH': {
                $Label =  $this->route('Label');
                return [
                    'sterile_date' => 'required',
                    'expire_date' => 'required',
                    'sterilizer_id' => 'required',
                    'cycle_number' => 'required',
                    'lot_number' => 'required',
                    'package_id' => 'required',
                ];
                break;

            }
            default:
                break;
        }

    }

}