Flutter - How to loop through nested collection and convert to DataTable row? - database

Question

So I have this DB structure:
I need to get all the sets for a every exercise for a workout for a user and then display it in a DataTable.
StreamBuilder<QuerySnapshot>(
stream: FirebaseFirestore.instance
.collection("workouts")
.doc(workoutId)
.collection("exercises")
.snapshots(),
builder: (BuildContext context, AsyncSnapshot<QuerySnapshot> snapshot) {
if (!snapshot.hasData) {
return const Text("There are no exercises");
}
return DataTable(
decoration: BoxDecoration(
border: Border.all(
width: 2,
color: kBlack,
),
),
dataRowHeight: SizeConfig.screenHeight * 0.05,
dataTextStyle: const TextStyle(
fontSize: kAppButtonTextFontSize, color: kAppTextColor),
headingRowHeight: SizeConfig.screenHeight * 0.05,
headingTextStyle: const TextStyle(fontSize: kAppButtonTextFontSize),
//horizontalMargin,
columnSpacing: 20,
showCheckboxColumn: true,
showBottomBorder: false,
dividerThickness: 3,
columns: const [
DataColumn(
label: Text(
"Set#",
style: TextStyle(
fontStyle: FontStyle.italic,
color: kBlack,
),
),
numeric: true,
),
DataColumn(
label: Text(
"Weight",
style: TextStyle(
fontStyle: FontStyle.italic,
color: kBlack,
),
),
numeric: true,
//tooltip: "This is Last Name",
),
DataColumn(
label: Text(
"Reps",
style: TextStyle(
fontStyle: FontStyle.italic,
color: kBlack,
),
),
numeric: true,
),
DataColumn(
label: Text(
"ToFailure",
style: TextStyle(
fontStyle: FontStyle.italic,
color: kBlack,
),
),
numeric: true,
),
],
rows: _getExercises(snapshot),// Here I want to get the rows
);
});
_getExercises(AsyncSnapshot<QuerySnapshot> snapshot) {
setState(() {
//How to structure the data here so as to get DataRows
snapshot.data!.docs.forEach((doc) {
//print(
// 'DOCUMENT DATA =' + doc.data().toString(),
// );
completedExerciseSetRows.add(
DataRow(cells: [
DataCell(Text()),
DataCell(Text()),
DataCell(Text()),
]),
);
});
});