如何在swift中使用tableview重新排序Realm表

import RealmSwift

class Item: Object {
    @objc dynamic var name: String = ""
    @objc dynamic var sortOrder: Int = 0
}

import RealmSwift

class ViewController: UIViewController {
    let realm = try! Realm()
    var items: Results<Item>!

    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 查询Realm表中的数据，并按照排序字段进行排序
        items = realm.objects(Item.self).sorted(byKeyPath: "sortOrder")
    }
}

extension ViewController: UITableViewDataSource {
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return items.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)
        let item = items[indexPath.row]
        cell.textLabel?.text = item.name
        return cell
    }
}

extension ViewController: UITableViewDelegate {
    func tableView(_ tableView: UITableView, moveRowAt sourceIndexPath: IndexPath, to destinationIndexPath: IndexPath) {
        try! realm.write {
            let itemToMove = items[sourceIndexPath.row]
            items.remove(at: sourceIndexPath.row)
            items.insert(itemToMove, at: destinationIndexPath.row)
            
            // 更新排序字段的值，以反映新的排序顺序
            for (index, item) in items.enumerated() {
                item.sortOrder = index
            }
        }
    }
}