006.php

<?php

namespace App\Controllers;

use App\Models\NewsModel;
use CodeIgniter\Exceptions\PageNotFoundException;

class News extends BaseController
{
    // ...

    public function show(?string $slug = null)
    {
        $model = model(NewsModel::class);

        $data['news'] = $model->getNews($slug);

        if ($data['news'] === null) {
            throw new PageNotFoundException('Cannot find the news item: ' . $slug);
        }

        $data['title'] = $data['news']['title'];

        return view('templates/header', $data)
            . view('news/view')
            . view('templates/footer');
    }
}