如何在Laravel中实现JSON序列化关系集合

// User.php
class User extends Model
{
    public function posts()
    {
        return $this->hasMany(Post::class);
    }
}

// Post.php
class Post extends Model
{
    public function user()
    {
        return $this->belongsTo(User::class);
    }
}

// UserController.php
class UserController extends Controller
{
    public function index()
    {
        $users = User::with('posts')->get();

        return view('users.index', compact('users'));
    }
}

// users/index.blade.php
@foreach ($users as $user)
    <div>
        <h2>{{ $user->name }}</h2>
        <ul>
            @foreach ($user->posts as $post)
                <li>{{ $post->title }}</li>
            @endforeach
        </ul>
    </div>
@endforeach

<script>
    var users = @json($users);
    console.log(users);
</script>