How to retrieve data from firestore by fields

Question

How to get field level data from firebase?

I want values of certain field from all documents in a collection, What should I add? Heres my code,

Future<void> fetchAndSetData() {
FirebaseFirestore.instance
    .collection('Reservations')
    .get()
    .then((value) {
  print(value.docs.map((e) => e.data()));
});

}

and this is what I get in console

(  461): ({}, {seats: [104A, 104B], tableNo: 104})

You can add screenshot about your documents and collections? — Felipe Vergara, Jan 13 '22 at 13:37

score 2 · Accepted Answer · answered Jan 13 '22 at 13:39

2

Changed the method like this

   Future<void> fetchAndSetData() { 
         FirebaseFirestore.instance
        .collection('Reservations')
        .get()
        .then((value) { 
 print(value.docs.map((e) => e['seats']));
 }); 
}

answered Jan 13 '22 at 13:39

Dipak Prajapati

116
1
4

Almost there, It should be like e.data()['seats'] instead of e['seats'] – Shanu Jan 13 '22 at 13:49

How to retrieve data from firestore by fields

1 Answers1