ios - 如何更新云工具包中的数据

我有一个包含2种记录类型的云工具包数据库：


人名单
房间清单


占用房间的人不断变化。我有一个CKRecord .Reference存储在引用一个房间的人员记录类型中。但是，此参考需要不断变化，因为占用房间的人不断变化。

我一直在努力尝试在不创建新记录的情况下更新参考。

我试图将CKRecord从人员的CkRecords数组中拉出，创建对我希望该人员居住的房间的新引用，并将此引用保存回人员记录，然后使用CKModifyRecordsOperation对象。

但是，这似乎在我的数据库中创建了一条新记录，而不是更新当前记录。

if providerAssignedRoom == nil {
    self.roomAssignmentDelegate?.assignRoom(roomID: self.selectedRoomCKRecID, provider: provider, completion: self.transitionBackToRoot)
}
else {
    let newProvider = self.searchCKRecArrayForProviderRef(providerRecID, self.providersCKRecsArray)
    let reference = CKRecord.Reference(recordID:
    self.selectedRoomCKRecID, action: .none)
    newProvider[RecordTypes.providerEnum.assignedRoom] = reference
    let operation = CKModifyRecordsOperation(recordsToSave: [record, newProvider], recordIDsToDelete: nil)
    operation.completionBlock = {
        print("record reference assigned to nil")
    }
    LaborFloorNamesDB.share.publicDatabase.add(operation)
}

最佳答案

解决方案只是添加一个保存策略。我使它变得比需要的复杂。

let providerToBeAssigned = self.providersArray[indexPath.item]
let providerToBeAssignedCKRef = self.findProviderCKRecordBasedOnProviderObject(provider: providerToBeAssigned)

var roomToBeReferenced: CKRecord {
    let object = self.roomsAsCKRecsArray.filter {$0.recordID == self.selectedRoomCKRecID}
    let value = object.first
    return value!
}

if self.providerToBeRemoved != nil {
    self.providerToBeRemoved![RecordTypes.providerEnum.assignedRoom] = nil
}

providerToBeAssignedCKRef![RecordTypes.providerEnum.assignedRoom] = CKRecord.Reference(record: roomToBeReferenced, action: .none)

let operation = CKModifyRecordsOperation(recordsToSave: [providerToBeAssignedCKRef!, self.providerToBeRemoved!], recordIDsToDelete: nil)
operation.savePolicy = .changedKeys
operation.completionBlock = {
    print("record reference updated to cloud")
}

LaborFloorNamesDB.share.publicDatabase.add(operation)