How to get/read a GeoFirePoint from a DocumentSnapshot

[awhitford]

Where point is a GeoFirePoint instance, I was successful at writing the point to the database with something like:

    doc.reference.updateData({'geoLocation': point.data});

But now I am unable to read the point back (where doc is a DocumentSnapshot):

    final GeoFirePoint point = doc["geoLocation"];

It said:

[VERBOSE-2:ui_dart_state.cc(148)] Unhandled Exception: type '_InternalLinkedHashMap<dynamic, dynamic>' is not a subtype of type 'GeoFirePoint'

What am I missing?

[awhitford]

So this is what I figured out I needed to do...

final GeoFirePoint point = GeoFirePoint(
        doc["geoLocation"]["geopoint"].latitude,
        doc["geoLocation"]["geopoint"].longitude);

This seems to work, but I'd prefer to see GeoFirePoint treated like an opaque type, similar to GeoPoint.

A constructor for GeoFirePoint based on a GeoPoint value would be better, then it could be:

final GeoFirePoint point = GeoFirePoint.fromGeoPoint(doc["geoLocation"]["geopoint"]);

However, this is still not ideal because it expects the user to understand how GeoFirePoint is stored.

[rdev-software]

Any update on this ? There should be helper method fromJSON which should parse MAP type

[elvisgn]

Having the same issue. Is there a fix planned ?

[awhitford]

I added some Dart Extension Methods in the meantime.

[giorgio79]

@awhitford looks like this is a breaking change.

This no longer works

    Position position = await Geolocator()
        .getCurrentPosition(desiredAccuracy: LocationAccuracy.high);

    GeoFirePoint point = geo.point( position.latitude,  position.longitude);

instead you need to provide keys

    Position position = await Geolocator()
        .getCurrentPosition(desiredAccuracy: LocationAccuracy.high);

    GeoFirePoint point = geo.point(latitude: position.latitude, longitude: position.longitude);