json dart code example

Example 1: flutter generate json files

flutter packages pub run build_runner build

Example 2: parse json to dart model

import 'dart:convert';

main() {
  String nestedObjText =
      '{"title": "Dart Tutorial", "description": "Way to parse Json", "author": {"name": "bezkoder", "age": 30}}';

  Tutorial tutorial = Tutorial.fromJson(jsonDecode(nestedObjText));

  print(tutorial);

Example 3: json to dart

class Autogenerated {
  int postId;
  int id;
  String name;
  String email;
  String body;

  Autogenerated({this.postId, this.id, this.name, this.email, this.body});

  Autogenerated.fromJson(Map<String, dynamic> json) {
    postId = json['postId'];
    id = json['id'];
    name = json['name'];
    email = json['email'];
    body = json['body'];
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    data['postId'] = this.postId;
    data['id'] = this.id;
    data['name'] = this.name;
    data['email'] = this.email;
    data['body'] = this.body;
    return data;
  }
}

Example 4: json to dart

class BusinessProfileEditModel {
  String name;
  String address;
  String email;
  String phoneNumber;
  String rcNumber;
  String businessRegistrationTypeKey;
  String businessVerticalKey;
  String countryKey;
  String lgaKey;

  BusinessProfileEditModel(
      {this.name,
      this.address,
      this.email,
      this.phoneNumber,
      this.rcNumber,
      this.businessRegistrationTypeKey,
      this.businessVerticalKey,
      this.countryKey,
      this.lgaKey});

  BusinessProfileEditModel.fromJson(Map<String, dynamic> json) {
    name = json['name'];
    address = json['address'];
    email = json['email'];
    phoneNumber = json['phoneNumber'];
    rcNumber = json['rcNumber'];
    businessRegistrationTypeKey = json['businessRegistrationTypeKey'];
    businessVerticalKey = json['businessVerticalKey'];
    countryKey = json['countryKey'];
    lgaKey = json['lgaKey'];
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    data['name'] = this.name;
    data['address'] = this.address;
    data['email'] = this.email;
    data['phoneNumber'] = this.phoneNumber;
    data['rcNumber'] = this.rcNumber;
    data['businessRegistrationTypeKey'] = this.businessRegistrationTypeKey;
    data['businessVerticalKey'] = this.businessVerticalKey;
    data['countryKey'] = this.countryKey;
    data['lgaKey'] = this.lgaKey;
    return data;
  }
}