ReflectionException in RouteDependencyResolverTrait.php error in creating request validation - Laravel -

i have problems code. following tutorial in laravel 5. doing form validation got error , don't know how did happened. new laravel.

i creating article sample.

here's controller:

<?php namespace app\http\controllers;  use app\article; use app\http\requests; use app\http\controllers\controller;  //use illuminate\http\request; use carbon\carbon; //use request;  class articlescontroller extends controller {      public function index() {          //$articles = article::all();         //$articles = article::latest('published_at')->where('published_at', '<=', carbon::now())->get();         /** select * articles published_at <= now() order published_at desc */          $articles = article::latest('published_at')->published()->get();          return view('articles.index', compact('articles'));      }      public function show($id) {          $article = article::findorfail($id);          //dd($article->published_at);          return view('articles.show', compact('article'));      }      public function create() {          return view('articles.create');      }      public function store(createarticlerequest $request) {           //$input = request::all();         //$input['published_at'] = carbon::now();         //$title = request::get('title');          article::create($request->all());          return redirect('articles');      }  } 

here's request

<?php namespace app\http\requests;  use app\http\requests\request;  class createarticlerequest extends request {      /**      * determine if user authorized make request.      *      * @return bool      */     public function authorize()     {         return true; //permissions     }      /**      * validation rules apply request.      *      * @return array      */     public function rules()     {         return [             'title' => 'required|min:3',             'body' => 'required',             'published_at' => 'required|date'         ];     }  } 

my route:

<?php  /* |-------------------------------------------------------------------------- | application routes |-------------------------------------------------------------------------- | | here can register of routes application. | it's breeze. tell laravel uris should respond | , give controller call when uri requested. | */  route::get('/', 'welcomecontroller@index');  route::get('home', 'homecontroller@index');  route::controllers([     'auth' => 'auth\authcontroller',     'password' => 'auth\passwordcontroller', ]);  route::get('articles','articlescontroller@index'); route::get('articles/create','articlescontroller@create'); route::get('articles/{id}','articlescontroller@show');  route::post('articles','articlescontroller@store'); 

when checked doesn't allow me insert in database.

it throwing reflectionexception because using wrong class. should use app\http\requests\createarticlerequest instead of app\http\requests in articlescontroller