Flutter : how i get data from firestore in List<String>?

Question

hi guys i'm trying to get data from my firestore database into List<String> for that i create variable List<String> listCour; and i use that instruction for get data from firestore

   Firestore.instance
    .collection('MATH')
    .document(doc.documentID)
    .collection("cours")
    .snapshots()
    .listen(
    (cour)=> cour.documents.forEach((doc){

           listCour.add(doc.documentID);                   
             })
          );

but the List has get no data !!

Yuna · Accepted Answer · 2019-03-18 14:57:56Z

1

Try using doc.data

listCour.add(doc.data);

Firestore.instance
    .collection('MATH')
    .document(doc.documentID)
    .collection("cours")
    .getDocuments()
    .then((QuerySnapshot snapshot) {
      snapshot.documents...
    })

edited Mar 18, 2019 at 14:57

answered Mar 18, 2019 at 14:12

Yuna

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1 Comment

Abdelmjid Asouab Over a year ago

no data :( i try any affection inside ` forEach((doc){ ---- } ` and didn't working i don't know why

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