如何在FutureBuilder中访问存储在Future <QuerySnapshot>中的数据

Question

这是我正在使用getDocumenent()访问Future<QuerySnapshot>

的数据的存储库

Future<QuerySnapshot> fetchOrderSummery() async {
    var user = await FirebaseAuth.instance.currentUser();
    return firestoreInstance
        .collection("placeOrder")
        .document(user.uid)
        .collection("subPlaceOrder")
        .getDocuments();
  }

这是我的FutureBuilder

Future<QuerySnapshot> order = state.orderSummery;  //Using bloc so data return by state.orderSummery
              return FutureBuilder(
                future: order,
                builder: (context, snapshot) {
                  return Column(
                    children: <Widget>[
                      Text('${order.data.documents}'),
                    ],
                  );
                },
              );

Answer 1

1。声明一个变量 2.执行期间分配 3.在将来使用变量

while($row_feed = $feed->fetch_object()) {  }