Question

我正在尝试使用变换器返回响应数据，但它返回错误

类型错误：传递给App \ Support \ Response :: collection（）的参数2必须是League \ Fractal \ TransformerAbstract的实例，App \ Transformers \ UserTransformer的实例给出，

在我打印$user时，在登录控制器中打印数据

[original:protected] => Array
    (
        [id] => 2
        [email] => test@test.com
        [password] => $2y$10$fyORQUSfUpIhDjrIBD2TK.elGKwdzV10YOmLd9Goks3z52AUYi8mK
        [status] => Active
        [system_role] => User
        [parent_user_id] => 0
        [otp_verifiy_id] => 253526851
        [last_login] => Carbon\Carbon Object
            (
                [date] => 2018-04-24 15:49:22.659941
                [timezone_type] => 3
                [timezone] => Asia/Calcutta
            )

        [remember_token] => eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpc3MiOiJodHRwOi8vMTkyLjE2OC41LjE1ODo4MDAwL2FwaS9hdXRoL2xvZ2l
        [created_at] => 2018-04-20 14:47:27
        [updated_at] => 2018-04-24 15:49:22
    )

之后，我将$user转换为UserTransformer

print_r($user);die; // above data
return $this->response->collection($user, new UserTransformer);

在我的UserTransformer代码中看起来像

 <?php

 namespace App\Transformers;

 use App\User;
 use League\Fractal\TransformerAbstract;
 use Illuminate\Http\Request;

 class UserTransformer {

  public function transform(User $user) {

      print_r($user);die;

}
}

当UserTransformer打印$user时，它会返回错误。我做错了什么。？

Answer 1

错误在这里：

return $this->response->collection($user, new UserTransformer);

new UserTransformer是App\Transformers\UserTransformer的实例，但应该是League\Fractal\TransformerAbstract的实例

您确定类UserTransformer不应该实现任何接口吗？

Answer 2

您需要在use GuzzleHttp\Psr7\Response; $responses = []; $client = new \GuzzleHttp\Client([ 'base_uri' => 'https://example.com' ]); $requests = function () use ($client) { for ($i = 0; $i < 2000; $i++) { yield function() use ($client,$i) { return $client->postAsync('/api/book?id=' . $i); }; } }; $pool = new \GuzzleHttp\Pool($client, $requests(),[ 'concurrency' => 5, 'fulfilled' => function (Response $response, $index) use (&$responses) { // if ($response->getStatusCode() == 200) { $responses[] = json_decode($response->getBody(), true); // } print_r($responses); // this will have all the responses }, 'rejected' => function (\GuzzleHttp\Exception\RequestException $reason, $index) { // dd($reason); //you can store it in laravel logs }, ]); $pool->promise()->wait(); return response()->json($responses);类中扩展TransformerAbstract：

UserTransformer

Laravel：使用变形金刚返回错误League \\ Fractal \\ TransformerAbstract

2 个答案: