laravel-app/app/Http/Controllers/PostController.php

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

use App\Models\Post;

class PostController extends Controller
{
    //
    public function index()
    {
        $posts = Post::published()->paginate(10);

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

    public function show(Post $post)
    {
        return view('posts.show', compact('post'));
    }
}