Database: Please add Push function into MutableData

When I use RunTransaction function I would like to add child node like I could normally push. For simplicity the MutableData should also have Push that would generate it’s key in transaction

Is it possible?

[chkuang-g]

@Thaina You are correct that if both client is trying to push { "newUniqueKey" : { "before" : null,"after" : newValue } }, the later one would be rejected and need to rerun the transaction again.

It is almost impossible to generate the same unique key using Push() in the second round-trip, assuming the timestamp calculated on all client is correct. If you want to 100% certain about 0 collision, you can always to check if the value at “newUniqueKey” is empty or not.

I can see your point to add Push() to MutableData. I can forward your opinion to the team. Since this API does not exists in iOS/Android SDK, we cannot simply add this to Unity SDK. https://firebase.google.com/docs/reference/android/com/google/firebase/database/MutableData

At the meantime, you can always use Push() from the captured DatabaseReference.

Hope this helps! Shawn

[Thaina]

@chkuang-g Thank you very much

I don’t require that it must be implemented like I have state above. But the MutableData in transation should have some api that could do this same functionality I wish more easily