Firestore Increment FieldValue

Question

So, I know there are a few similarly named questions, but this is not the same. I am curious to see if anyone could explain the reasoning for the lack of an increment sentinel, similar to the delete one.

As far as I know, a field deletion is no different than a document update. Meaning, I can just delete my field by simply updating the entire document to some new data, leaving that field out, hence, the question.

If we have a FieldValue.delete(), why the lack of a FieldValue.increment()

Note: I am aware of the 1QPS limit and I doubt it has anything to do with the above.

Regards!

score 5 · Accepted Answer · answered Mar 15 '19 at 02:25

5

Version 5.9.0 - Mar 14, 2019

Added FieldValue.increment(), which can be used in update() and set(..., {merge:true}) to increment or decrement numeric field values safely without transactions.

https://firebase.google.com/support/release-notes/js

answered Mar 15 '19 at 02:25

Henry

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Perfect :) Thank you so much! – Eduard Mar 15 '19 at 17:28
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Is this currently working in cloud functions? When I try to use it the value is never incremented. – ajaxon Apr 07 '19 at 11:55
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@ajaxon You can access that in functions from the firestore static property admin.firestore.FieldValue.increment(1) – HJo Jul 10 '19 at 11:28
@HamishJohnson this doesn't seem to work for nested object properties. is it supposed to? – Crashalot Jan 03 '21 at 04:03
@Crashalot I haven't tested but yes it should – HJo Jan 04 '21 at 18:38

Firestore Increment FieldValue

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