How to make dynamic routes PHP MVC - php

Question

How do I make a route for /blog/* where * is a slug for a blog post?
I am making a PHP MVC Framework from scratch and I'm making trouble with the showing data in view and how to make so people can click on blog posts to view it!
Please see the github: https://github.com/fillemon10/cinemania-mvc to understand and help me.
I dont know how do deal with retrieving data from database to blog.
index.php:
<?php
use app\controllers\AuthController;
use app\controllers\BlogController;
use app\controllers\SiteController;
use app\core\Application;
use app\models\Blog;
require_once __DIR__ . '/../vendor/autoload.php';
$dotenv = Dotenv\Dotenv::createImmutable(__DIR__);
$dotenv->load();
$config = [
'userClass' => \app\models\User::class,
'db' => [
'dsn' => $_ENV['DB_DSN'],
'user' => $_ENV['DB_USER'],
'password' => $_ENV['DB_PASSWORD']
]
];
$app = new Application(dirname(__DIR__), $config);
$app->on(Application::EVENT_BEFORE_REQUEST, function () {
});
$app->router->get('/', [SiteController::class, 'home']);
$app->router->get('/contact', [SiteController::class, 'contact']);
$app->router->post('/contact', [SiteController::class, 'contact']);
$app->router->get('/login', [AuthController::class, 'login']);
$app->router->post('/login', [AuthController::class, 'login']);
$app->router->get('/register', [AuthController::class, 'register']);
$app->router->post('/register', [AuthController::class, 'register']);
$app->router->get('/logout', [AuthController::class, 'logout']);
$app->router->get('/myaccount', [AuthController::class, 'myaccount']);
$app->router->get('/blog', [BlogController::class, 'blog']);
$app->run();
router.php:
<?php
namespace app\core;
use app\core\exception\NotFoundException;
class Router
{
public Request $request;
public Response $response;
protected array $routes = [];
public function __construct(Request $request, Response $response)
{
$this->request = $request;
$this->response = $response;
}
public function get($url, $callback, $params ="")
{
$this->routes['get'][$url] = $callback;
}
public function post($url, $callback)
{
$this->routes['post'][$url] = $callback;
}
public function resolve()
{
$url = $this->request->getUrl();
$method = $this->request->method();
$callback = $this->routes[$method][$url] ?? false;
if ($callback === false) {
throw new NotFoundException();
}
if (is_string($callback)) {
return Application::$app->view->renderView($callback);
}
if (is_array($callback)) {
/** #var \app\core\Controller $controller */
$controller = new $callback[0]();
Application::$app->controller = $controller;
$controller->action = $callback[1];
$callback[0] = $controller;
foreach ($controller->getMiddlewares() as $middleware) {
$middleware->execute();
}
}
return call_user_func($callback, $this->request, $this->response);
}
}