class HotTopicModel { int id; String name; HotTopicModel({this.id, this.name}); HotTopicModel.fromJson(Map<String, dynamic> json) { id = json['id']; name = json['name']; } Map<String, dynamic> toJson() { final Map<String, dynamic> data = new Map<String, dynamic>(); data['id'] = this.id; data['name'] = this.name; return data; } }