ios - 如何在 Swift 中删除 Realm 中的对象

Question

我检查了许多其他答案，但仍然无法删除 Realm 的数据表单数据库。
这是我的错误代码:

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[Rebel.RebelTableViewController delete:]: unrecognized selector sent to instance 0x7fca7b40b5c0

这段代码是从我的表格 View 中删除的:

if editingStyle == UITableViewCellEditingStyle.delete {
    rowHere = indexPath.row
    // it crashes the app when I want to delete from database

    //  delete(self.todos[self.rowHere!])

    self.Rebel.remove(at: indexPath.row)
    tableView.deleteRows(at: [indexPath as IndexPath], with: UITableViewRowAnimation.automatic)
}

Answer 1

先获取Object型号在viewDidLoad()

var DatabaseModel: Results<ObjectClassRealm>!

override func viewDidLoad() {
    super.viewDidLoad()
    let realm = RealmService.shared.realm
    DatabaseModel = realm.objects(ObjectClassRealm.self)
}




func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) { 
    guard editingStyle == .delete else { return }
    let objectData = DatabaseModel[indexPath.row]
    RealmService.shared.delete(objectData)
}

或者您可以单击按钮删除

@IBAction func DeleteData(_ sender: Any) {
    let realm = try! Realm()
    let deleteData = realm.object(ofType: ObjectClassRealm.self, 
                                  forPrimaryKey: PRIMARYKEY)
    if deleteData == nil {
        print("No data in DB")
    } else {
        RealmService.shared.delete(deleteData!)
    }
}

阅读 Realm 的文件，你也会找到许多相同问题的解决方案。