Firestore queries on Flutter

Question

How can I use the .where() in FlutterFire to perform queries for Firestore? Because the docs and example doesn't cover this I'm confused. I haven't found other questions on this here so I hope I'm not asking duplicate.

Answer 1

Example below go through every document in the collection 'fields', and filter on 'grower`. There is no documentation on that, but you may check the source code.

import 'package:cloud_firestore/cloud_firestore.dart';  Firestore.instance.collection('fields').where('grower', isEqualTo: 1)     .snapshots().listen(           (data) => print('grower ${data.documents[0]['name']}')     ); 

From source code:

  Query where(     String field, {     dynamic isEqualTo,     dynamic isLessThan,     dynamic isLessThanOrEqualTo,     dynamic isGreaterThan,     dynamic isGreaterThanOrEqualTo,     bool isNull,   }) {..}