Firebase query for two values

Question

I'm trying to implement locational based query in Firebase without GeoFire (Since the last update was 6 months ago it seems deprecated)

Anyhow, I can't figure this out.

It's not firing the listener. When there's not starting at or ending at it works.

Query looks like so: (Just testing with Latitude)

// Testing, only doing longtude atm.
        geoFlamesFIRReference
            .queryStarting(atValue: coordinates!.longitude - radius, childKey: "longtitude")
            .queryEnding(atValue: coordinates!.longitude + radius, childKey: "longtitude")
            .queryLimited(toFirst: UInt(Constants.LIMIT_OF_FLAMES_ON_MAP))
            .observe(.value, with: { snapshot in
                print("New location?")
            })

Then example of some of my data:

GeoFire is not deprecated. It works fine, so hasn't needed updating in a while. — Frank van Puffelen, Dec 05 '16 at 20:35

score 1 · Answer 1 · edited May 23 '17 at 11:52

You're using the wrong syntax for querying:

geoFlamesFIRReference
    .queryOrder(byChild: "longtitude")
    .queryStarting(atValue: coordinates!.longitude - radius)
    .queryEnding(atValue: coordinates!.longitude + radius)

Note that you will run into problems when you also want to filter by latitude, as Firebase queries can only contain a single orderBy clause.

GeoFire uses geohashes to work around this limitation. So if you're intent on not using that library, you will have to read up on those.

Firebase query for two values

1 Answers1