ldc-nature-and-respect/app/Http/Controllers/ProductController.php

<?php

namespace App\Http\Controllers;

use App\Product;

class ProductController extends Controller
{
    /**
     * Products index
     *
     * @return \Illuminate\Contracts\View\View
     */
    public function index()
    {
        $products  = Product::all()->sortby('sequence')->reverse()->groupBy('poultry');
        $poultries = $products->keys()->sort();
        return view('pages.produkte', compact(['products', 'poultries']));
    }

    /**
     * Product show
     *
     * @param mixed $id
     * @return \Illuminate\Contracts\View\View
     */
    public function show(mixed $id)
    {
        $product = Product::where('id', $id)->first();
        if ($product == null) {
            $product = Product::where('slug', $id)->first();
            if ($product == null) {
                abort(404);
            }
        }
        return view('pages.produkt', compact('product'));
    }
}