测试 RESTful API (Lumen) - http/https 协议是问题所在吗？

Question

我正在学习本教程 https://www.youtube.com/watch?v=6Oxfb_HNY0U 建立一个小流明测试项目。我目前在第 27 分钟，您应该通过 post 请求插入一条记录。为此，我使用 RESTClient http://restclient.net/

所以，最后一天我已经尽力解决了这个问题，多亏了SO，我至少也可以部分解决问题：

但是，我仍然收到错误而不是新记录。向

发送 post 请求时

http://localhost:8080/api/articles

我收到这个错误：

 (1/1) BadMethodCallException

Method Laravel\Lumen\Http\Request::validate does not exist.
in Macroable.php line 103
at Request->__call('validate', array(array('title' => 'required', 'description' => 'required')))in ArticleController.php line 36
at ArticleController->create(object(Request))
at call_user_func_array(array(object(ArticleController), 'create'), array(object(Request)))in BoundMethod.php line 32
at BoundMethod::Illuminate\Container\{closure}()in Util.php line 34
at Util::unwrapIfClosure(object(Closure))in BoundMethod.php line 90
at BoundMethod::callBoundMethod(object(Application), array(object(ArticleController), 'create'), object(Closure))in BoundMethod.php line 34
at BoundMethod::call(object(Application), array(object(ArticleController), 'create'), array(), null)in Container.php line 590
at Container->call(array(object(ArticleController), 'create'), array())in RoutesRequests.php line 376
at Application->callControllerCallable(array(object(ArticleController), 'create'), array())in RoutesRequests.php line 342
at Application->callLumenController(object(ArticleController), 'create', array(true, array('uses' => 'App\Http\Controllers\ArticleController@create'), array()))in RoutesRequests.php line 316
at Application->callControllerAction(array(true, array('uses' => 'App\Http\Controllers\ArticleController@create'), array()))in RoutesRequests.php line 278
at Application->callActionOnArrayBasedRoute(array(true, array('uses' => 'App\Http\Controllers\ArticleController@create'), array()))in RoutesRequests.php line 263
at Application->handleFoundRoute(array(true, array('uses' => 'App\Http\Controllers\ArticleController@create'), array()))in RoutesRequests.php line 165
at Application->Laravel\Lumen\Concerns\{closure}(object(Request))in RoutesRequests.php line 416
at Application->sendThroughPipeline(array(), object(Closure))in RoutesRequests.php line 171
at Application->dispatch(null)in RoutesRequests.php line 108
at Application->run()in index.php line 28

由于我是 Lumen/Laravel 的新手，我发现很难从这个错误中猜出任何内容。我不知道我是否只是拼写错误，没有注意范围或类似的东西。

现在，这里是产生这个错误的代码： web.php（路由），Article.php（模型，驻留在应用程序文件夹中）和 ArticleController.php（控制器）：

web.php:

<?php

/*
|--------------------------------------------------------------------------
| Application Routes
|--------------------------------------------------------------------------
|
| Here is where you can register all of the routes for an application.
| It is a breeze. Simply tell Lumen the URIs it should respond to
| and give it the Closure to call when that URI is requested.
|
*/

$router->get('/', function () use ($router) {
    return $router->app->version();
});
//                was simply 'api' in tutorial
$router->group(['prefix' => '/api'], function($router){
  $router->get('articles', 'ArticleController@showAllArticles');
  $router->get('articles/{id}', 'ArticleController@showOneArticle');
  $router->post('articles', 'ArticleController@create');
});

ArticleController.php

<?php

namespace App\Http\Controllers;

use App\Article;
use Illuminate\Http\Request;

class ArticleController extends Controller
{
    /**
     * Create a new controller instance.
     *
     * @return void
     */
    public function __construct()
    {
        //
    }

    //

    public function showAllArticles(){
      return response()->json(Article::get(['title', 'description', 'status'])); // ::get([]) spezifiziert die zu referenzierenden Attribute
                                                                                // ::all() referenziert alle Attribute einer Tabelle/Relation
    }

    public function showOneArticle($id){
      return response()->json(Article::find($id));
    }


    public function create(Request $request){
      //dd($request); //for debugging whether the request is actually being processed

      $validatedData = $request->validate([
        'title' => 'required',
        'description' => 'required',
      ]);


      //dd($request); //for debugging whether the specified fields are required
      //insert record

      $article = Article::create($request->all());
      return response()->json($article, 201);

    }


}

Article.php:

<?php

namespace App;


use Illuminate\Database\Eloquent\Model;

class Article extends Model
{

    protected $fillable = [
        'title', 'description', 'status'
    ];

}

由于此代码中的函数 "create()" 与教程代码相比有所修改（参见顶部引用的 SO 问题中 ege 的回答），我也尝试了教程代码，其中create() 函数如下所示：

public function create(Request $request){

  $this->validation($request, [
    'title' => 'required',
    'description' => 'required'
  ]);


  $article = Article::create($request->all());
  return response()->json($article, 201);

}

我又收到另一个错误，在这种情况下：

 (1/1) Error

Call to undefined method App\Http\Controllers\ArticleController::validation()
in ArticleController.php line 41
at ArticleController->create(object(Request))
at call_user_func_array(array(object(ArticleController), 'create'), array(object(Request)))in BoundMethod.php line 32
at BoundMethod::Illuminate\Container\{closure}()in Util.php line 34
at Util::unwrapIfClosure(object(Closure))in BoundMethod.php line 90
at BoundMethod::callBoundMethod(object(Application), array(object(ArticleController), 'create'), object(Closure))in BoundMethod.php line 34
at BoundMethod::call(object(Application), array(object(ArticleController), 'create'), array(), null)in Container.php line 590
at Container->call(array(object(ArticleController), 'create'), array())in RoutesRequests.php line 376
at Application->callControllerCallable(array(object(ArticleController), 'create'), array())in RoutesRequests.php line 342
at Application->callLumenController(object(ArticleController), 'create', array(true, array('uses' => 'App\Http\Controllers\ArticleController@create'), array()))in RoutesRequests.php line 316
at Application->callControllerAction(array(true, array('uses' => 'App\Http\Controllers\ArticleController@create'), array()))in RoutesRequests.php line 278
at Application->callActionOnArrayBasedRoute(array(true, array('uses' => 'App\Http\Controllers\ArticleController@create'), array()))in RoutesRequests.php line 263
at Application->handleFoundRoute(array(true, array('uses' => 'App\Http\Controllers\ArticleController@create'), array()))in RoutesRequests.php line 165
at Application->Laravel\Lumen\Concerns\{closure}(object(Request))in RoutesRequests.php line 416
at Application->sendThroughPipeline(array(), object(Closure))in RoutesRequests.php line 171
at Application->dispatch(null)in RoutesRequests.php line 108
at Application->run()in index.php line 28

我在理解错误方面基本上遇到了与第一个错误相同的问题。我在这里查看了流明文档： https://lumen.laravel.com/docs/6.x/validation

我又想知道我是否没有正确理解范围（"this" 在这里指的是什么，它是什么对象，我实际上可以从中调用什么方法？）。

为了完整起见，我引用 table 模型 "Article" 的 table 的屏幕截图： https://imgur.com/onXEgzg

总的来说，我只是一无所知，如果有人可以，我将非常感激"give me a lift" ^^

Answer 1

查看您的修改示例（您的 create() 方法的第二个版本），错误的第一行显示了问题：

Call to undefined method App\Http\Controllers\ArticleController::validation()

所以您的代码中的这一行有问题：

$this->validation() ...

检查 the link to the Lumen docs 您包括：

The $this->validate helper which is available in Lumen ...

所以有一个 validate() 帮助程序 - 但您正在使用 validation()。

测试 RESTful API (Lumen) - http/https 协议是问题所在吗？

Testing RESTful API (Lumen) - is the http/https protocol the problem?

php

apache

https

http

lumen