Convert JSON into POJO (Object) similar to android in Flutter

Question

I\'m just trying to find a way to convert a json response (from a REST API) into POJO (As used in android) so that I can use the received data into my application as using M

Answer 1

SO, after some tries with the json_serializable library, I came up with my own solution and it doesnt require any external library at all and works like a charm. This way i had to write less boilerplate code and i think is a clean way to do this.

Here's how to make the model

class SideMenuRes {
final int status;
final String message;
final List sideMenuData;

SideMenuRes({this.status, this.message, this.sideMenuData});
factory SideMenuRes.fromJson(Map json) {
  return SideMenuRes(
    status: json['status'],
    message: json['message'],
    sideMenuData: json['status'] == 200 ? (json['data'] as List).map((i) => new 
  SideMenuDatum.fromJson(i)).toList() : null,
  );
}
}

class SideMenuDatum {
final Menu menu;
SideMenuDatum({this.menu});
factory SideMenuDatum.fromJson(Map json) {
  return SideMenuDatum(
    menu: Menu.fromJson(json['menu']),
  );
}
}

class Menu {
final String megamenu_id;
final String language_id;
final String title;
final String description;
final List subMenu;

Menu({this.megamenu_id, this.language_id, this.title, this.description, this.subMenu});
factory Menu.fromJson(Map json) {
  return Menu(
      megamenu_id: json['megamenu_id'],
      language_id: json['language_id'],
      title: json['title'],
      description: json['description'],
      subMenu: json['submenu'] != null ? (json['submenu'] as List).map((i) => new SubMenu.fromJson(i)).toList() : null
  );
}
}

class SubMenu {
final Zero zero;
final List subSubMenu;

SubMenu({this.zero, this.subSubMenu});
factory SubMenu.fromJson(Map json) {
  return SubMenu(
      zero: Zero.fromJson(json['0']),
      subSubMenu: (json['subsubmenu'] as List).map((i) => new SubSubMenu.fromJson(i)).toList()
  );
}
}

class Zero {
final Info info;
Zero({this.info});
factory Zero.fromJson(Map json) {
  return Zero(
    info: Info.fromJson(json['info']),
  );
  }
 }

class SubSubMenu {
final InfoSub infoSub;
SubSubMenu({this.infoSub});

factory SubSubMenu.fromJson(Map json) {
  return SubSubMenu(
      infoSub: InfoSub.fromJson(json['infosub'])
  );
}
}

class InfoSub {
final String megamenu_id;
final String language_id;
final String title;
final String description;

InfoSub({this.megamenu_id, this.language_id, this.title, this.description});
factory InfoSub.fromJson(Map json) {
return InfoSub(
    megamenu_id: json['megamenu_id'],
    language_id: json['language_id'],
    title: json['title'],
    description: json['description']
  );
 }
}

class Info {
 final String megamenu_id;
 final String language_id;
final String title;
final String description;

Info({this.megamenu_id, this.language_id, this.title, this.description});
factory Info.fromJson(Map json) {
return Info(
    megamenu_id: json['megamenu_id'],
    language_id: json['language_id'],
    title: json['title'],
    description: json['description']
  );
 }
}

And calling it like this

SubMenuRes subMenuRes = SubMenuRes.fromJson(response.data);

That's it!