Getting a JSON file using flutterfire stack-CodePudding

I am using firebase's realtime database store JSON files with google map marker locations. I have been using the google maps API. However, I cannot figure out how to get the json from realtime database to the flutter code, specifically in this section:

Future<Locations> getGoogleOffices() async {
  return Locations.fromJson(
    json.decode(
      // get json file
  );
}

Previously I was referencing the JSON file locally to bug fix the app. I would greatly appreciate any help and apologies as I am quite new to flutter!

CodePudding user response：

Once you have well setup the Fireabse application instance:

await Firebase.initializeApp(); // somewhere in your `main` starter method

You can query a Firestore collection data as follows:

Future<Locations> getGoogleOffices() async {
  DocumentSnapshot documentSnapshot = await FirebaseFirestore.instance.collection('locations').doc('documentId').get();
  return Locations.fromJson(
    json.decode(
      documentSnapshot.data()
  );
}