writeModelsToFile<T> static method

bool writeModelsToFile<T>(List<T> models, String filePath, Map<String, dynamic> toJson(T))

将对象列表写入 JSON 文件

models 要写入的对象列表 filePath 保存到的文件路径 toJson 对象转换为 Map 的函数

返回值: bool 是否写入成功（true成功，false失败）

使用示例:

List<WheelModel> models = [model1, model2];
bool ok = JsonUtil.writeModelsToFile<WheelModel>(
  models,
  '/tmp/wheels.json',
  (model) => model.toJson(),
);
print(ok);

Implementation

static bool writeModelsToFile<T>(
  List<T> models,
  String filePath,
  Map<String, dynamic> Function(T) toJson,
) {
  try {
    final file = File(filePath);
    file.parent.createSync(recursive: true);
    final jsonList = models.map((model) => toJson(model)).toList();
    final jsonString = jsonEncode(jsonList);
    file.writeAsStringSync(jsonString);
    return true;
  } catch (e) {
    Logger.log('Error writing models to file: $e');
    return false;
  }
}