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Accepted
Fabian Reyes
Asked: 2020-11-22 14:21:18 +0800 CST 2020-11-22 14:21:18 +0800 CST

DART Complex JSON Pass

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Friends, I am in a project where I need to access the information of a fairly complex JSON.

JSON Extracted from the API This is the one for the episodes. enter image description here I need to access the "season", "info" and "episodes" properties but I can't figure out how to do it.

Create the model from quicktype.io and I am using the following parse to access the data:

class SeasonsProvider {
  final String url =
      'url_api';

  Future<List<Season>> cargarTemporadaSerie(serieId) async {

final String urlfinal = url + '${serieId}';
final resp = await http.get(urlfinal);

final Map<String, dynamic> decodedData = json.decode(resp.body);
final List<Season> seasons = new List();

if (decodedData == null) return [];
decodedData.forEach((nombre, season) {
  final seasonTemp = Season.fromJson(season);
  seasonTemp.name = nombre;
  season.add(seasonTemp);
});
return seasons;

} }

The problem is that it does not do a correct conversion of the JSON format and I cannot get the data, I get the following exception.

enter image description here

I need to get a list with the parameter "name"

flutter

1 Answers

  1. Best Answer

    I solved it with the following code:

    final Map<String, dynamic> decodedData = json.decode(resp.body);
    if (decodedData == null) return [];
    var decodedDataFinal=decodedData['seasons'] as List;
    var seasons = decodedDataFinal.map((f) => new Season.fromJson(f))
        .toList();
    return seasons;
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