unable to read data from firestore

Question

i trying to read data in firestore using json the type Map must implements iterable

Stream<List<RentModel>> readData(){ var json = collection.document("rent").snapshots(); List<RentModel> rentModel = List(); return json.map((document) { for (var index in document.data){ // error is here in document.data that: the type Map<String, dynamic> must implements iterable rentModel.add(RentModel.fromJson(index)); } return rentModel; }); }

Peter Haddad · Accepted Answer · 2020-01-19 13:55:35Z

If you want to use for...in, then you need to have a class that implements an iterable such as List and Set, but document.data is of type Map.

If you want to iterate inside a map, then you can use forEach:

document.data.forEach((key,values) { print(key); });

https://api.dart.dev/stable/2.3.1/dart-core/Map/forEach.html

Collectives™ on Stack Overflow

unable to read data from firestore

1 Answer 1

Comments

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Related