How to retreive Key and Collection after using WriteStorageObjects API

Game Design
1

So I have used both WriteStorageObjects and ReadStorageObjects in my unreal engine project and I am using Nakama Client 2.7.0. I want to assign Key and Value when I read which is working fine with the following code.

void UBackendGameinstance::OnReadStorageObjectsSuccess(const TArray& StorageObjects)
{
UE_LOG(LogTemp, Log, TEXT(“Read success:”));

for (auto& objects : StorageObjects) {
	FString key = objects.Key;
	FString value = objects.Value;
	UE_LOG(LogTemp, Warning, TEXT("Object key:%s  ,value:%s "), *key, *value);
	this->valReturn.Broadcast(key, value);
}

}

I want to implement the same for WriteStorageObjects but it is not working as expected it directly calls the OnError Delegate function.

void UBackendGameinstance::OnWriteStorageObjectsSuccess(const FNakamaStoreObjectAcks& acks)
{
UE_LOG(LogTemp, Log, TEXT(“Success writing storage objects”));

for (auto& ack : acks) {
	FString key = ack.key.c_str();
	FString collection = ack.collection.c_str();
	UE_LOG(LogTemp, Warning, TEXT("%s Has been updated in collection: %s"), *key, *collection);
}

}

My guess is as you can see in ReadObject it is TArray they use TArray but in WritingObject it is just “const FNakamaStoreObjectAcks&” So I am not sure whether I can loop through the values.

So I want to set the Key and Collection in OnWriteStorageObjectsSuccess. If you guys have any idea how to implement it. It will be very helpful for us.

Thanks in advance

2

Please ensure the API request code also here,

3

I have attached the API requested code here

void UBackendGameinstance::setToNakama(const FString key, const FString collection, const FString playerDataInJson)
{
FNakamaStoreObjectWrite WriteObject;
NStorageObjectWrite savesObject;
savesObject.collection = TCHAR_TO_UTF8(*collection);
savesObject.key = TCHAR_TO_UTF8(*key);
savesObject.value = TCHAR_TO_UTF8(*playerDataInJson);

if (key.IsEmpty() || collection.IsEmpty())
{
	UE_LOG(LogTemp, Error, TEXT("Invalid collection or key value supplied. They must be set."));
	return;
}

TArray<FNakamaStoreObjectWrite> StorageObjectsData = { WriteObject };

FOnStorageObjectAcks WriteStorageObjectsSuccessDelegate;
WriteStorageObjectsSuccessDelegate.AddDynamic(this, &UBackendGameinstance::OnWriteStorageObjectsSuccess);

FOnError WriteStorageObjectsErrorDelegate;
WriteStorageObjectsErrorDelegate.AddDynamic(this, &UBackendGameinstance::OnWriteStorageObjectsError);

client->WriteStorageObjects(session, StorageObjectsData, WriteStorageObjectsSuccessDelegate, WriteStorageObjectsErrorDelegate);

}

4

lot’s of things is different in new 2.7.0 sdk version
@tom will help, i think

5

We somwhow figured it out. I have attached the solution below check it out for future references

This is changes inside the API Function for WriteStorageObjects

FNakamaStoreObjectWrite WriteObject;
WriteObject.PermissionWrite = ENakamaStoragePermissionWrite::OWNER_WRITE;
WriteObject.PermissionRead = ENakamaStoragePermissionRead::OWNER_READ;
WriteObject.Collection = TCHAR_TO_UTF8(*collection);
WriteObject.Key = TCHAR_TO_UTF8(*key);
WriteObject.Value = TCHAR_TO_UTF8(*playerDataInJson);

This is OnSuccessDelegate Changes

void UBackendGameinstance::OnWriteStorageObjectsSuccess(const FNakamaStoreObjectAcks& acks)
{

for (auto& ack : acks.StorageObjects) {
	FString key = ack.Key;
	FString collection = ack.Collection;
	UE_LOG(LogTemp, Warning, TEXT("%s Has been updated in collection: %s"), *key, *collection);
}

UE_LOG(LogTemp, Log, TEXT("Success writing storage objects"));

}