CollectionsController.php

<?php

namespace App\Http\Controllers;

use App\Services\CollectionService;
use Illuminate\Http\Request;

class CollectionsController extends Controller
{
    /**
     * @var CollectionService
     */
    private $collectionService;

    public function __construct(CollectionService $collectionService)
    {
        $this->collectionService = $collectionService;
    }

    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function index()
    {
        $collections = $this->collectionService->all();

        return view('collections.index', compact('collections'));
    }
}