CODEWITHSUNDEEP
jsonflutterdartinheritanceextends
Ahmad Mohy
Ahmad Mohy

Reputation: 401

Flutter: inheritance, what i need know and how, an implemented method in parent that i need to use it in child and add more implementation on it

abstract class CommonModel {
  int id;
  String name;
....
  Map<String, dynamic> toJson(){
     final Map<String, dynamic> data = new Map<String, dynamic>();
    data['Id'] = this.id;
    data['Name'] = this.name;
    return data;
  }
}


import 'package:Elnota/models/governorate.dart';
import  'package:Elnota/models/abstract_common_model.dart';

class Centeral extends CommonModel{
 
  Governorate gov;

  Centeral({
    int id, 
    String name, 
    this.gov}) : super(id:id, name:name);

  Centeral.fromJson(Map<String, dynamic> json) :super.fromJson(json){
    gov = json['Gov'] != null ? new Governorate.fromJson(json['Gov']) : null;
  }


  Map<String, dynamic> toJson() {
   final Map<String, dynamic> data = new Map<String, dynamic>();
    data['Gov'] = this.gov;
  }

  
}

Upvotes: 2

Views: 512

Answers (1)

nvoigt
nvoigt

Reputation: 77294

It's a little hard to understand what you need, but how about this:

@override
Map<String, dynamic> toJson() {
 final data = super.toJson();
 data['Gov'] = gov.toJson();
 return data;
}

Upvotes: 1

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