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

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

use App\Models\Post;
use App\Events\CommentPosted;

class CommentController extends Controller
{
    //
    public function store(Request $request, Post $post)
    {
        $validated = $request->validate([
            'author_name' => 'required|string',
            'body' => 'required|string',
        ]);
        $comment = $post->comments()->create($validated);
        CommentPosted::dispatch($comment);

        return back()->with('success', 'Успешно!');
    }
}