public function index()
 {
     $articles = Article::latest('published_at')->published()->get();
     return view('articles.index', compact('articles'));
 }
 /**
  * Bootstrap the application services.
  *
  * @return void
  */
 public function boot()
 {
     view()->composer('articles.partials.nav', function ($view) {
         $view->with('latest', Article::latest()->first());
     });
 }