ios – further entities with nil attributes in Core Knowledge

Right here is my code. I’ve further entities with nil attributes in Core Knowledge. after I deleted and run utility firstly, I’ve one saved object with nil attributes fetched from core information.

class RepositoryEntity {

personal var context = (UIApplication.shared.delegate as! AppDelegate).persistentContainer.viewContext

func fetchRepositories() -> [RepositoryEntity] {
    do {
        return strive context.fetch(RepositoryEntity.fetchRequest())
    } catch(let error) {
        print("errr: ", error.localizedDescription)
    }
    return []
}

func saveObject(repo: Repository, onSuccess: () -> Void, onFailure: (_ error: String) -> Void) {
        let repoEntity = RepositoryEntity(context: self.context)
        repoEntity.fullName = repo.fullName
        repoEntity.dateCreated = repo.dateCreated
        repoEntity.url = repo.url
        repoEntity.language = repo.language
        repoEntity.repoDescription = repo.repoDescription
        repoEntity.id = repo.id

        let ownerEntity = OwnerEntity(context: self.context)
        ownerEntity.ownerName = repo.proprietor.ownerName
        ownerEntity.avatarUrl = repo.proprietor.avatarUrl

        repoEntity.addToOwner(ownerEntity)
        
//        Save the info
        do {
            strive context.save()
            onSuccess()
        } catch(let error) {
            onFailure("One thing Happend. Attempt once more later.")
            print(error.localizedDescription)
    }
}

func deleteRepository(repo: Repository, onSuccess: () -> Void, onFailure: (_ error: String) -> Void) {
   
    let repositories = fetchRepositories()
    guard let deletableRepo = repositories.first(the place: {$0.id == repo.id}) else { return }

    self.context.delete(deletableRepo)
    
    do {
        strive context.save()
        onSuccess()
    } catch(let error) {
        onFailure("One thing Occurs. strive once more later.")
        print(error.localizedDescription)
    }
    
}

}

after I deleted and run utility firstly, I’ve one saved object with nil attributes fetched from core information.