CODEWITHSUNDEEP
flutterdart
Romanoffa
Romanoffa

Reputation: 71

Dart remove square brackets and add single quotation mark

I have a list of strings pulled from database as a string

[name 1, name2, name3, ...]

i am trying to convert it to this:

'name 1', 'name2', 'name3', '...'

so far no success. method with which i am getting data. The method is just fine since I am using it beforehand for other part of code.

  Future<List<String>> getNames() async {
    var url = _api + "get_names.php?key=" + _key;
    http.Response response = await http.get(url);
    var resp = jsonDecode(response.body);
    return resp.map<String>((m) => m['names'] as String).toList();
  }

list is pulled from database as a String.

Basicaly I am using a part of formbuilder code which uses initialValue as dynamic. so if I set initialValue: [widget.names] and the widget.names contains 'name1','name2' it is ok if it is a list of string but It needs to be ofcourse single or double quoted and seperated with comma.

Thank you

Upvotes: 2

Views: 6662

Answers (1)

nvoigt
nvoigt

Reputation: 77374

void main() {
  final input = '[name 1, name2, name3, ...]';
  final removedBrackets = input.substring(1, input.length - 1);
  final parts = removedBrackets.split(', ');
  
  var joined = parts.map((part) => "'$part'").join(', ');
  
  print(joined);
}

Using: https://api.flutter.dev/flutter/dart-core/String/split.html

Prints:

'name 1', 'name2', 'name3', '...'

That said... maybe you should find a better way to get your data. Maybe as Json or something, so you don't have to reinvent serialization. What happens for example if "name 1" has a comma in it? Or let's say it's d'Artagnan?

Upvotes: 8

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