Question

我使用这个库将分形变换器添加到我的json输出中。

＆＃13;

//This is main tranformer for service provider enquiry transformer

  class CustomerVehicleTransformer extends TransformerAbstract {

          protected $defaultIncludes = [
            'service_provider_enquries'
        ];
        public function transform(CustomerVehicle $customerVehicle) {
           
                return [
                     'id'      => (int) $customerVehicle->id,
                    'status'   =>$customerVehicle->vehiclenumber
                    ];
            }

       public function includeServiceProviderEnquries(CustomerVehicle $customerVehicle) {

            $serviceProvider = $customerVehicle->service_provider_enquries;
            return $this->item($serviceProvider, new ServiceProvidersEnquiryTransformer);
        }
    }

＆＃13;

class ServiceProvidersEnquiryTransformer extends TransformerAbstract {


    public function transform(ServiceProvidersEnquiry $book) {
        return [
            'modeofpayment'      => (int) $book->modeofpayment
        ];
    }


}

＆＃13;

＆＃13; 从控制器

调用

＆＃13;

       $manager =new Fractal\Manager();
        if (isset($_GET['include'])) {
            $manager->parseIncludes($_GET['include']);
        }
        $json = $manager->createData($resource)->toJson();
         echo $json;

＆＃13;

当我尝试运行此代码时，会抛出以下错误：

参数1传递给应用程序\ Acme的\ FractalTransformers \ ServiceProvidersEnquiryTransformer ::变换（）必须是App \ ServiceProvidersEnquiry的实例，null给定，调用在/home/aidor/Documents/ozoServer/vendor/league/fractal/src/Scope.php中在307行并定义

可能是什么问题？请提供一些defaultincludes和availableIncludes的例子。

Answer 1

错误是$resource为空，您需要将ServiceProvidersEnquiry的实例传递给它，您还缺少一些关键代码行来设置响应。仔细检查文档，检查您是否正确行事，并了解为什么它不起作用：http://fractal.thephpleague.com/transformers/

你应该做这样的事情我想：

// set up data
$enquiry = App\ServiceProvidersEnquiry::first();

// set up fractal manager
$manager = new Fractal\Manager();

if (isset($_GET['include'])) {
    $manager->parseIncludes($_GET['include']);
}

$fractal->setSerializer(new Fractal\Serializer\ArraySerializer());

// set up response item
$response = new Fractal\Resource\Item($enquiry, new \PathToYourTransformer\ServiceProvidersEnquiryTransformer);

return response()->json($fractal->createData($response)->toArray());

在分形变换器Laravel 5中使用include？

1 个答案: