How to fetch documents around a certain location

[Isuru-Nanayakkara]

Hello,

This might be a simple question but I'm having a hard time trying to figure out how to do this.

I'm developing an iOS app which transmits user's last known location periodically. My Firebase setup looks like this.

It has a users collection. Each user has the aforementioned last location coordinate.

What I'm trying to do now is, given a location and a radius, fetch the set of users who fall within that radius.

I know I can initiate a query like this.

let circleQuery = geoFirestore.query(withCenter: center, radius: 10)

But not sure what to do after that. How do I get the results from this query?

[fury21]

Look answer hear - https://stackoverflow.com/questions/46630507/how-to-run-a-geo-nearby-query-with-firestore