Feature request: runTransaction

[ibilux]

Hello @AshleyMedway ,
can we implement runTransaction ?

[AshleyMedway]

HI @ibilux - what would you want to achieve?

Looking at the documentation I think we could easily do: create/update/set/delete in a transaction.

But this example from Google with a read then update inside the transaction would be quite difficult

[ibilux]

Hello @AshleyMedway ,
You are right. I was trying to implement this myself. But it's kinda difficult to do for Android and iOS.

[AshleyMedway]

@ibilux is it enough to just have create/update/delete inside the transaction or would reads need to happen inside the transaction also?

[ibilux]

Hello @AshleyMedway ,
There are two types of atomic operations in Cloud Firestore:

• Transactions: a transaction is a set of read and write operations on one or more documents.

• Batched Writes: a batched write is a set of write operations on one or more documents.

I think create/update/delete can be enough and even a better solution as mentioned in the documents above.
A lot of users have been complaining about Transactions and runTransaction in stackoverflow and other platforms.
So Batched Writes are the best approach i guess.