I have problem trying deserialise inherited class with json_serializable package in Dart/Flutter. Here is the code example:
@JsonSerializable(explicitToJson: true)
class Document {
String id = UniqueKey().toString();
String name='';
List<Component> components=[]; //list of Components
Document({required this.components}):super();
Document.empty();
factory Document.fromJson(Map<String, dynamic> json) =>_$DocumentFromJson(json);
Map<String, dynamic> toJson() => _$DocumentToJson(this);
}
@JsonSerializable()
class Component { //Component Base Class
String id = UniqueKey().toString();
String name='';
Component();
factory Component.fromJson(Map<String, dynamic> json) =>_$ComponentFromJson(json);
Map<String, dynamic> toJson() => _$ComponentToJson(this);
}
@JsonSerializable()
class TextComponent extends Component{ //inherited from Component
String text='';
TextComponent():super();
TextComponent.text({required this.text}):super();
factory TextComponent.fromJson(Map<String, dynamic> json) =>_$TextComponentFromJson(json);
@override Map<String, dynamic> toJson() => _$TextComponentToJson(this);
}
And here is the test:
void main() {
//creating json from object
Document d = Document(components:[TextComponent.text(text: 'text')] );
print(d.components[0].runtimeType); //-type is : TextComponent
var json = d.toJson();
//create object from json
var newDoc = Document.fromJson(json);
print(newDoc.components[0].runtimeType); //-type is : Component which is the base class
}
After deserialising the inherited class is downcasted to base class, but i need the inherited class.
