class DidvanPlusModel { final int id; final String title; final String description; final String image; final String file; final String publishedAt; final int? duration; DidvanPlusModel({ required this.id, required this.title, required this.description, required this.image, required this.file, required this.publishedAt, this.duration, }); factory DidvanPlusModel.fromJson(Map json) { return DidvanPlusModel( id: json['id'], title: json['title'] ?? '', description: json['description'] ?? '', image: json['image'], file: json['file'], publishedAt: json['createdAt'] ?? json['publishedAt'], duration: json['duration'], ); } }