CODEWITHSUNDEEP
swiftrealm
ALostPenguin
ALostPenguin

Reputation: 21

Swift Realm delete Object error- write transaction

I am deleting a Realm object and am getting this error:

Terminating app due to uncaught exception 'RLMException', reason: 'Can only add, remove, or create objects in a Realm in a write transaction - call beginWriteTransaction on an RLMRealm instance first.'

I have tried refresh()

extension Realm {
    func addWord(_ word: RelatedWord) {
        do {
            try self.write {
                self.add(word)
            }
        } catch let error {
            print(error.localizedDescription)
        }
    }

    func deleteWord(_ word: RelatedWord) {
        BG {
            do {
                    self.beginWrite()
                    self.delete(word)
                    try self.commitWrite()
                    //self.refresh()
                } catch let error {
                 print(error.localizedDescription)
            }
        self.refresh()
        }
    }
}

VC:
realm.delete(word)

Expected result: swipe to delete object from tableview

Error: object deletion not being hnadled properly.

*** Terminating app due to uncaught exception 'RLMException', reason: 'Can only add, remove, or create objects in a Realm in a write transaction - call beginWriteTransaction on an RLMRealm instance first.'

I think the issue is not with my function to delete a realm object but rather that there is an inconsistency between the Realm objects and the table view attempting to access deleted objects.

// Swipe to delete cell and word
func tableView(_ tableView: UITableView,trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {

let action = UIContextualAction(style: .normal, title: "Delete", handler: { (action, view, completionHandler) in
    // Update data source when user taps action

    let letters = DataSingleton.shared.relatedArr.keys.sorted()
    if let data = DataSingleton.shared.relatedArr[letters[indexPath.section]]?.sorted(by: {$0.word < $1.word}) {
        let word = data[indexPath.row]
        print(word.word)
        self.realm.delete(word)


        tableView.beginUpdates()
        tableView.deleteRows(at: [indexPath], with: .fade)
        tableView.reloadRows(at: [indexPath], with: .automatic)
        tableView.endUpdates()
    }

    completionHandler(true)
})

Upvotes: 1

Views: 964

Answers (1)

rs7
rs7

Reputation: 1630

I'm not sure what BG is, but I would do it like this instead:

func deleteWord(_ word: RelatedWord) {
        do {
            try self.write {
                self.delete(word)
            } 
        } catch let error {
             print(error.localizedDescription)
        }
    self.refresh()
}

Upvotes: 0

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