How to add dynamically items to the table in flutter?

Question

Do someone know how to add dynamically more rows into the DataTable in Flutter. As you can see my code is very 'hardcoded' [line: 11-31].
There should be a way to get rid of writing more and more DataRows.

Code:

class DataTableWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return DataTable(
      columns: [
        DataColumn(label: Text('Patch')),
        DataColumn(label: Text('Version')),
        DataColumn(label: Text('Ready')),
      ],
      rows: <DataRow>[
        DataRow(
          cells: <DataCell>[
            DataCell(Text('AAAAAA')),
            DataCell(Text('1')),
            DataCell(Text('Yes')),
          ],
        ),
        DataRow(
          cells: <DataCell>[
            DataCell(Text('BBBBBB')),
            DataCell(Text('2')),
            DataCell(Text('No')),
          ],
        ),
        DataRow(
          cells: <DataCell>[
            DataCell(Text('CCCCCC')),
            DataCell(Text('3')),
            DataCell(Text('Yes')),
          ],
        ),
      ],
    );
  }
}

Answer 1

You can use

listOfColumns.map(((element) => DataRow(...))).toList()

This is your code using this method.

class DataTableWidget extends StatelessWidget {
  final List<Map<String, String>> listOfColumns = [
    {"Name": "AAAAAA", "Number": "1", "State": "Yes"},
    {"Name": "BBBBBB", "Number": "2", "State": "no"},
    {"Name": "CCCCCC", "Number": "3", "State": "Yes"}
  ];
//  DataTableWidget(this.listOfColumns);     // Getting the data from outside, on initialization
  @override
  Widget build(BuildContext context) {
    return DataTable(
      columns: [
        DataColumn(label: Text('Patch')),
        DataColumn(label: Text('Version')),
        DataColumn(label: Text('Ready')),
      ],
      rows:
          listOfColumns // Loops through dataColumnText, each iteration assigning the value to element
              .map(
                ((element) => DataRow(
                      cells: <DataCell>[
                        DataCell(Text(element["Name"])), //Extracting from Map element the value
                        DataCell(Text(element["Number"])),
                        DataCell(Text(element["State"])),
                      ],
                    )),
              )
              .toList(),
    );
  }
}

Answer 2

You could do something like this:**

class DataTableWidget extends StatelessWidget {

      List results=[] ;
       intState((){
         super.iniState();
            this.getSale();
 })
Future<String> getData () async {

var response = await http.get(
  "$saleUrl/?format=json",

);
setState(() {
  var dataConvertedToJson = 
json.decode(utf8.decode(response.bodyBytes));
  results = dataConvertedToJson['results'];
});
 print('${results.length}');
  return "successful";
 }
  DataRow _getDataRow(result) {
    return DataRow(
      cells: <DataCell>[
        DataCell(Text(data["text1"])),
        DataCell(Text(data["text2"])),
        DataCell(Text(data["text3"])),
      ],
    );
  }

  @override
  Widget build(BuildContext context) {
    return DataTable(
      columns: [
        DataColumn(label: Text('Patch')),
        DataColumn(label: Text('Version')),
        DataColumn(label: Text('Ready')),
      ],
      rows: List.generate(
          results.length, (index) => _getDataRow(results[index])),
    );
  }
}