laravel find post by category code example

Example 1: laravel display category post by slug

public function postCategory($id)
    {
        $posts = Post::where('category_id', $id)->get();

        return view('front.posts.category', compact('posts'));
    }

Example 2: laravel display category post by slug

Route::get(/category/{slug});

    public function postCategory($slug)
    {
        $posts = Post::where('slug', $slug)->get();

        return view('front.posts.category', compact('posts'));
    }