object_mapper 1.0.0

Object Mapper is a package written in Dart that makes it easy for you to convert your model objects to and from JSON.

example/lib/main.dart

import 'dart:convert';

import 'package:flutter/cupertino.dart';
import 'package:flutter/services.dart';
import 'package:object_mapper/object_mapper.dart';

final json = {
  "id": 1,
  "name": "Fantasy",
  "books": [
    {
      "id": 1,
      "name": "The Hobbit",
      "author": "J. R. R. Tolkien",
      "publish_at": "1937-09-21"
    },
    {
      "id": 2,
      "name": "Harry Potter",
      "author": "J. K. Rowling",
      "publish_at": "1997-12-01"
    }
  ]
};

class CategoryInfo with Mappable {
  // Attributes
  int id;
  String name;
  List<BookInfo> books;

  @override
  void mapping(Mapper map) {
    map("id", id, (v) => id = v);
    map("name", name, (v) => name = v);
    map<BookInfo>("books", books, (v) => books = v);
  }
}

class BookInfo with Mappable {
  // Attributes
  int id;
  String name;
  String author;
  DateTime publishAt;

  @override
  void mapping(Mapper map) {
    map("id", id, (v) => id = v);
    map("name", name, (v) => name = v);
    map("author", author, (v) => author = v);
    map("publish_at", publishAt, (v) => publishAt = v, DateTransform());
  }
}

void main() async {

  // Register factory
  Mappable.factories = {
    CategoryInfo: () => CategoryInfo(),
    BookInfo: () => BookInfo()
  };

  // Convert json to CategoryInfo
  final category = Mapper.fromJson(json).toObject<CategoryInfo>();
  print(category.toJson());
}