Symfony4“@ParamConverter批注未找到对象”404错误

我发现了类似https://symfony.com/doc/current/routing.html中所述的类似博客示例的Symfony4。 然后，我添加了一条新路由来添加/ blog / about页面。因此，我的src / Controller / BlogController.php中的一部分代码是：

/**
 * @Route("/blog/{id}", name="blog_show")
 */
public function show(Description $article) {
    return $this->render('blog/show.html.twig', [
        'article' => $article,
    ]);
}

/**
 * @Route("blog/about", name="about")
 */
public function about() {
    return $this->render('blog/about.html.twig', [
        'copyright' => "GLPI 3",
    ]);
}

当我运行locahost：8000 / blog / about时，它返回404错误：@ParamConverter批注未找到
App \ Entity \ Description 对象

After hours to find solution, I finally read https://symfony.com/doc/current/routing.html and understand that the /blog/{id} annotation catch /blog/about route but can't use it!

By switching functions order in my controller file:

/**
 * @Route("/blog/about", name="blog_about")
 */
public function about() {
    return $this->render('blog/about.html.twig', [
        'copyright' => "GLPI 3",
    ]);
}

/**
 * @Route("/blog/{id}", name="blog_show")
 */
public function show(Description $article) {
    return $this->render('blog/show.html.twig', [
        'article' => $article,
    ]);
}

It works fine !

The solution as mentionned by @tom is the only one with severals entities and controllers !