从领域数据库中删除对象时，出现错误原因：“只能从它所属的领域中删除对象。”

Question

我正在尝试使用索引路径删除领域对象，错误为“RLMException”，原因：“只能从它所属的领域中删除一个对象。”

1. 声明MainModelClass和realm数组

   var arrSavedData = [MainModelClass]()
   var realm : Realm?
   
   override func viewDidLoad() {
     super.viewDidLoad()
     self.getDatafromrealm()
     realm = try! Realm()
    }
   

2. 为从领域数据库获取数据而编写的函数`

    func getDatafromrealm() {
      realm?.beginWrite()
      let data = realm?.objects(MainModelClass.self)
      let jsonData = try! JSONEncoder().encode(data)
      let decoder = JSONDecoder()
      do{
   
        let result = try decoder.decode([MainModelClass].self, from: jsonData)
        for i in 0..<result.count {
            arrSavedData.append(result[i])
        }
        self.tblSaveData.reloadData()
      }
    catch let error as NSError{
        // error.description
        print(error.description)
      }
       try! realm?.commitWrite()
    }
   

3.tableview方法使用indexpath删除realm对象

 func tableView(_ tableView: UITableView, commit editingStyle: 
       UITableViewCell.EditingStyle, forRowAt indexPath: IndexPath) {
       if editingStyle == .delete {
        realm?.beginWrite()
        realm?.delete(arrSavedData[indexPath.row])
        try! realm?.commitWrite()
        self.tblSaveData.reloadData()
        
    }
}

4.最后一个我的 MainModelClass

class MainModelClass : Object,Codable {

   @objc dynamic var title:String?
   @objc dynamic var link: String?
   @objc dynamic var author: String?
   @objc dynamic var thumbnail: String?
   @objc dynamic var itemDescription: String?
   @objc dynamic var content:String?
   @objc dynamic var pubDate:String?

}