Firestore: Version history of documents

Question

I\'m looking for a proper way to structure Firestore database to handle multiple version histories of documents inside a single collection.

For example: I have a co

Answer 1

I can think of it like this. Each offers document will have offerHistoryID as number.

• You can have a separate root collection for versioned documents of offers(say offers_transactions).
• Now write an update trigger cloud function on offers document which will have both after and before values of the document.
• Before doing the doc update, you can write the before values into the offers_transactions along with timestamp and latest historyID.
• Increment the offerHistoryID by 1 for that offer and update the doc with new values.

Now you can query the root collection offers_transactions for historic transactions based on your filters. This way you can keep your root collection offers cleaner.

Thoughts?