view Composer |display categories and subCategories in blade file containing navbar

php artisan make:provider CategoryComposerServiceProvider this file is located inside the app/Http/Providers as CategoryComposerServiceProvider.php add the created provier in the config/app.php file as 'prodivers'=>[

                 App\Providers\CategoryComposerServiceProvider::class,

                ]

in the proviers/CategoryComposerServiceProvider.php file

<?php

namespace App\Providers;

use Illuminate\Support\Facades\View;

use Illuminate\Support\ServiceProvider;

class CategoryComposerServiceProvider extends ServiceProvider

{

    public function boot()

    {

        View::composer('layouts.menubar','App\Http\View\Composers\CategoryComposer');

        //

    }

}

inside app/Http/View/Composers/categoryComposer.php file

<?php

namespace App\Http\View\Composers;

use App\Category;

use App\SubCategory;

use Illuminate\View\View;

class CategoryComposer

{

    public function compose(View $view)

    {

        //  $view->with('count', $this->users->count());

        $view->with('categories',Category::all());

       $view->with('subcategories',SubCategory::all());

    }

}