Flutter Firebase Iterate through all documents that matches field value and inserting field from each one into a List of String - flutter

Question

I'm trying to get afield value into a list of string from documents in the firebase that match the WHERE of a field value from a value of my own.
(I wanna show images above each other to create a full picture depending on the data, using two fields to be exact and then creating a list of images to show as positioned inside a Stack)
my code:
Implant Class:
class Implant {
final String id;
final String pid;
final String aptid;
late String type;
late double? sizew;
late int? sizel;
late String? positionQ;
late int? positionN;
Implant(this.id, this.pid, this.aptid, this.type, this.sizew, this.sizel,
this.positionQ, this.positionN);
Map<String, dynamic> toJson() => {
'ID': id,
'PID': pid,
'APTID': aptid,
'TYPE': type,
'SIZEW': sizew,
'SIZEL': sizel,
'POSITIONQ': positionQ,
'POSITIONN': positionN,
};
factory Implant.fromJson(Map<String, dynamic> json) {
return Implant(
json['ID'],
json['PID'],
json['APTID'],
json['TYPE'],
json['SIZEW'],
json['SIZEL'],
json['POSITIONQ'],
json['POSITIONN'],
);
}
static Map<String, dynamic> toMap(Implant implant) => {
'ID': implant.id,
'PID': implant.pid,
'APTID': implant.aptid,
'TYPE': implant.type,
'SIZEW': implant.sizew,
'SIZEL': implant.sizel,
'POSITIONQ': implant.positionQ,
'POSITIONN': implant.positionN,
};
static String encode(List<Implant> implant) => json.encode(
implant
.map<Map<String, dynamic>>((implant) => Implant.toMap(implant))
.toList(),
);
static List<Implant> decode(String implants) =>
(json.decode(implants) as List<dynamic>)
.map<Implant>((implant) => Implant.fromJson(implant))
.toList();
}
Future of list of string function:
static Future<List<String>> getImplants(Patient patient) async {
List<String> result = ['assets/images/teeth/empty.png'];
var collection = FirebaseFirestore.instance.collection('implants');
var docSnapshot = await collection.doc(patient.id).get();
if (docSnapshot.exists) {
Map<String, dynamic> data = docSnapshot.data()!;
result.add(data['POSITIONQ'] + data['POSITIONN']);
}
return result;
}
How I translate them into Stack and Positioned:
static Future<void> showPatientImplants(BuildContext context, Patient patient,
{bool spaces = true}) async {
List<String> myImplants;
myImplants = await getImplants(patient);
List<Widget> x = [Image.asset('assets/images/teeth/empty.png')];
myImplants.forEach((element) {
x.add(Image.asset(element));
});
return await showDialog(
context: context,
builder: (BuildContext context) {
return AlertDialog(
scrollable: true,
content: SingleChildScrollView(
child: GestureDetector(
onTap: () {
log(myImplants.toString());
},
child: Stack(
children: x,
),
),
),
);
});
}
The only problem I'm facing -I think- is that the Future<List> function doesn't get me the values I need.
I tried using other functions I found on SO and google, nothing worked.
I guess I can try using the stream and Listview.builder just to get the files names but it seems like exactly how it shouldn't be done.
any help is appreciated.

Answer 1

Never mind Solved it using the following code:
static Future<List<String>> getImplants(Patient patient) async {
List<String> result = ['assets/images/teeth/empty.png'];
log('ID:${patient.id}');
var collection = FirebaseFirestore.instance
.collection('implants')
.where('PID', isEqualTo: patient.id);
var docSnapshot = await collection.get();
for (var element in docSnapshot.docs) {
if (element.exists) {
Map<String, dynamic> data = element.data();
result.add(data['POSITIONQ'].toString() + data['POSITIONN'].toString());
}
}
return result;
}
but if anyone has a better idea I appreciate it along with everyone who has a similar problem.