Data is not parsing into map through fromJson function - json

Question

I am trying to fetch data from the API but when I parse data through fromjson then data is not returning please fix this issue.
this is Function calling API and having issue in this function when I am parsing data through model. I have given code of service class in which i am using API to fetch data of inventory and i have given modal class and json response through API
Future<List<Inventory>> requestInventory(
String accessToken, String userId) async {
final response = await http.get(Uri.parse('${AppUrl.getInventory}/$userId'),
headers: <String, String>{
'Content-Type': 'application/json; charset=UTF-8',
'Authorization': 'Bearer $accessToken'
});
late List<Inventory> list=[];
// List<Inventory>? list;
if (response.statusCode == 200) {
var value = jsonDecode(response.body);
//old
// var data = value['data']['inventory'];
var data = value['details']['data']['user']['inventory'];
print("data in inventory service ->>>> $data");
if (data != null || data != []) {
list= data.map<Inventory>((json) => Inventory.fromJson(json)).toList();
print('inventory service list is ::::::::::::::::::::::: $list');
return list;
} else {
return list = [];
}
// list = data.map<Inventory>((json) => Inventory.fromJson(json)).toList();
// return list;
} else {
return list = [];
}
}
This is my My Model Class
class GetInventory {
GetInventory({
String? details,
Data? data,}){
_details = details;
_data = data;
}
GetInventory.fromJson(dynamic json) {
_details = json['details'];
_data = json['data'] != null ? Data.fromJson(json['data']) : null;
}
String? _details;
Data? _data;
GetInventory copyWith({ String? details,
Data? data,
}) => GetInventory( details: details ?? _details,
data: data ?? _data,
);
String? get details => _details;
Data? get data => _data;
Map<String, dynamic> toJson() {
final map = <String, dynamic>{};
map['details'] = _details;
if (_data != null) {
map['data'] = _data?.toJson();
}
return map;
}
}
class Data {
Data({
User? user,
List<Posts>? posts,}){
_user = user;
_posts = posts;
}
Data.fromJson(dynamic json) {
_user = json['user'] != null ? User.fromJson(json['user']) : null;
if (json['posts'] != null) {
_posts = [];
json['posts'].forEach((v) {
_posts?.add(Posts.fromJson(v));
});
}
}
User? _user;
List<Posts>? _posts;
Data copyWith({ User? user,
List<Posts>? posts,
}) => Data( user: user ?? _user,
posts: posts ?? _posts,
);
User? get user => _user;
List<Posts>? get posts => _posts;
Map<String, dynamic> toJson() {
final map = <String, dynamic>{};
if (_user != null) {
map['user'] = _user?.toJson();
}
if (_posts != null) {
map['posts'] = _posts?.map((v) => v.toJson()).toList();
}
return map;
}
}
class Posts {
Posts({
List<TradeWithPictures>? tradeWithPictures,
List<String>? tags,
List<Pictures>? pictures,
List<Comments>? comments,
String? id,
String? title,
String? description,
String? category,
String? subCategory,
String? condition,
String? user,
String? createdAt,
String? updatedAt,}){
_tradeWithPictures = tradeWithPictures;
_tags = tags;
_pictures = pictures;
_comments = comments;
_id = id;
_title = title;
_description = description;
_category = category;
_subCategory = subCategory;
_condition = condition;
_user = user;
_createdAt = createdAt;
_updatedAt = updatedAt;
}
Posts.fromJson(dynamic json) {
if (json['tradeWithPictures'] != null) {
_tradeWithPictures = [];
json['tradeWithPictures'].forEach((v) {
_tradeWithPictures?.add(TradeWithPictures.fromJson(v));
});
}
_tags = json['tags'] != null ? json['tags'].cast<String>() : [];
if (json['pictures'] != null) {
_pictures = [];
json['pictures'].forEach((v) {
_pictures?.add(Pictures.fromJson(v));
});
}
if (json['comments'] != null) {
_comments = [];
json['comments'].forEach((v) {
_comments?.add(Comments.fromJson(v));
});
}
_id = json['_id'];
_title = json['title'];
_description = json['description'];
_category = json['category'];
_subCategory = json['subCategory'];
_condition = json['condition'];
_user = json['user'];
_createdAt = json['createdAt'];
_updatedAt = json['updatedAt'];
}
List<TradeWithPictures>? _tradeWithPictures;
List<String>? _tags;
List<Pictures>? _pictures;
List<Comments>? _comments;
String? _id;
String? _title;
String? _description;
String? _category;
String? _subCategory;
String? _condition;
String? _user;
String? _createdAt;
String? _updatedAt;
Posts copyWith({ List<TradeWithPictures>? tradeWithPictures,
List<String>? tags,
List<Pictures>? pictures,
List<Comments>? comments,
String? id,
String? title,
String? description,
String? category,
String? subCategory,
String? condition,
String? user,
String? createdAt,
String? updatedAt,
}) => Posts( tradeWithPictures: tradeWithPictures ?? _tradeWithPictures,
tags: tags ?? _tags,
pictures: pictures ?? _pictures,
comments: comments ?? _comments,
id: id ?? _id,
title: title ?? _title,
description: description ?? _description,
category: category ?? _category,
subCategory: subCategory ?? _subCategory,
condition: condition ?? _condition,
user: user ?? _user,
createdAt: createdAt ?? _createdAt,
updatedAt: updatedAt ?? _updatedAt,
);
List<TradeWithPictures>? get tradeWithPictures => _tradeWithPictures;
List<String>? get tags => _tags;
List<Pictures>? get pictures => _pictures;
List<Comments>? get comments => _comments;
String? get id => _id;
String? get title => _title;
String? get description => _description;
String? get category => _category;
String? get subCategory => _subCategory;
String? get condition => _condition;
String? get user => _user;
String? get createdAt => _createdAt;
String? get updatedAt => _updatedAt;
Map<String, dynamic> toJson() {
final map = <String, dynamic>{};
if (_tradeWithPictures != null) {
map['tradeWithPictures'] = _tradeWithPictures?.map((v) => v.toJson()).toList();
}
map['tags'] = _tags;
if (_pictures != null) {
map['pictures'] = _pictures?.map((v) => v.toJson()).toList();
}
if (_comments != null) {
map['comments'] = _comments?.map((v) => v.toJson()).toList();
}
map['_id'] = _id;
map['title'] = _title;
map['description'] = _description;
map['category'] = _category;
map['subCategory'] = _subCategory;
map['condition'] = _condition;
map['user'] = _user;
map['createdAt'] = _createdAt;
map['updatedAt'] = _updatedAt;
return map;
}
}
class Comments {
Comments({
String? text,
Profile? profile,}){
_text = text;
_profile = profile;
}
Comments.fromJson(dynamic json) {
_text = json['text'];
_profile = json['profile'] != null ? Profile.fromJson(json['profile']) : null;
}
String? _text;
Profile? _profile;
Comments copyWith({ String? text,
Profile? profile,
}) => Comments( text: text ?? _text,
profile: profile ?? _profile,
);
String? get text => _text;
Profile? get profile => _profile;
Map<String, dynamic> toJson() {
final map = <String, dynamic>{};
map['text'] = _text;
if (_profile != null) {
map['profile'] = _profile?.toJson();
}
return map;
}
}
class Profile {
Profile({
String? role,
bool? banned,
dynamic bannedTill,
List<dynamic>? inventory,
String? fcmToken,
String? profilePictureURL,
String? id,
String? createdAt,
String? updatedAt,
String? firstName,
String? lastName,}){
_role = role;
_banned = banned;
_bannedTill = bannedTill;
_inventory = inventory;
_fcmToken = fcmToken;
_profilePictureURL = profilePictureURL;
_id = id;
_createdAt = createdAt;
_updatedAt = updatedAt;
_firstName = firstName;
_lastName = lastName;
}
Profile.fromJson(dynamic json) {
_role = json['role'];
_banned = json['banned'];
_bannedTill = json['bannedTill'];
if (json['inventory'] != null) {
_inventory = [];
json['inventory'].forEach((v) {
// _inventory?.add(dynamic.fromJson(v));
});
}
_fcmToken = json['fcmToken'];
_profilePictureURL = json['profilePictureURL'];
_id = json['_id'];
_createdAt = json['createdAt'];
_updatedAt = json['updatedAt'];
_firstName = json['firstName'];
_lastName = json['lastName'];
}
String? _role;
bool? _banned;
dynamic _bannedTill;
List<dynamic>? _inventory;
String? _fcmToken;
String? _profilePictureURL;
String? _id;
String? _createdAt;
String? _updatedAt;
String? _firstName;
String? _lastName;
Profile copyWith({ String? role,
bool? banned,
dynamic bannedTill,
List<dynamic>? inventory,
String? fcmToken,
String? profilePictureURL,
String? id,
String? createdAt,
String? updatedAt,
String? firstName,
String? lastName,
}) => Profile( role: role ?? _role,
banned: banned ?? _banned,
bannedTill: bannedTill ?? _bannedTill,
inventory: inventory ?? _inventory,
fcmToken: fcmToken ?? _fcmToken,
profilePictureURL: profilePictureURL ?? _profilePictureURL,
id: id ?? _id,
createdAt: createdAt ?? _createdAt,
updatedAt: updatedAt ?? _updatedAt,
firstName: firstName ?? _firstName,
lastName: lastName ?? _lastName,
);
String? get role => _role;
bool? get banned => _banned;
dynamic get bannedTill => _bannedTill;
List<dynamic>? get inventory => _inventory;
String? get fcmToken => _fcmToken;
String? get profilePictureURL => _profilePictureURL;
String? get id => _id;
String? get createdAt => _createdAt;
String? get updatedAt => _updatedAt;
String? get firstName => _firstName;
String? get lastName => _lastName;
Map<String, dynamic> toJson() {
final map = <String, dynamic>{};
map['role'] = _role;
map['banned'] = _banned;
map['bannedTill'] = _bannedTill;
if (_inventory != null) {
map['inventory'] = _inventory?.map((v) => v.toJson()).toList();
}
map['fcmToken'] = _fcmToken;
map['profilePictureURL'] = _profilePictureURL;
map['_id'] = _id;
map['createdAt'] = _createdAt;
map['updatedAt'] = _updatedAt;
map['firstName'] = _firstName;
map['lastName'] = _lastName;
return map;
}
}
class Pictures {
Pictures({
String? publicID,
String? url,}){
_publicID = publicID;
_url = url;
}
Pictures.fromJson(dynamic json) {
_publicID = json['publicID'];
_url = json['url'];
}
String? _publicID;
String? _url;
Pictures copyWith({ String? publicID,
String? url,
}) => Pictures( publicID: publicID ?? _publicID,
url: url ?? _url,
);
String? get publicID => _publicID;
String? get url => _url;
Map<String, dynamic> toJson() {
final map = <String, dynamic>{};
map['publicID'] = _publicID;
map['url'] = _url;
return map;
}
}
/// publicID : "bartermade/post-pictures/oqzvs8cnioj2yncpembd"
/// url : "https://res.cloudinary.com/dtksvfjsi/image/upload/v1649202575/bartermade/post-pictures/oqzvs8cnioj2yncpembd.jpg"
class TradeWithPictures {
TradeWithPictures({
String? publicID,
String? url,}){
_publicID = publicID;
_url = url;
}
TradeWithPictures.fromJson(dynamic json) {
_publicID = json['publicID'];
_url = json['url'];
}
String? _publicID;
String? _url;
TradeWithPictures copyWith({ String? publicID,
String? url,
}) => TradeWithPictures( publicID: publicID ?? _publicID,
url: url ?? _url,
);
String? get publicID => _publicID;
String? get url => _url;
Map<String, dynamic> toJson() {
final map = <String, dynamic>{};
map['publicID'] = _publicID;
map['url'] = _url;
return map;
}
}
class User {
User({
String? role,
bool? banned,
dynamic bannedTill,
List<Inventory>? inventory,
dynamic fcmToken,
String? profilePictureURL,
String? id,
String? createdAt,
String? updatedAt,
String? firstName,
String? lastName,}){
_role = role;
_banned = banned;
_bannedTill = bannedTill;
_inventory = inventory;
_fcmToken = fcmToken;
_profilePictureURL = profilePictureURL;
_id = id;
_createdAt = createdAt;
_updatedAt = updatedAt;
_firstName = firstName;
_lastName = lastName;
}
User.fromJson(dynamic json) {
_role = json['role'];
_banned = json['banned'];
_bannedTill = json['bannedTill'];
if (json['inventory'] != null) {
_inventory = [];
json['inventory'].forEach((v) {
_inventory?.add(Inventory.fromJson(v));
});
}
_fcmToken = json['fcmToken'];
_profilePictureURL = json['profilePictureURL'];
_id = json['_id'];
_createdAt = json['createdAt'];
_updatedAt = json['updatedAt'];
_firstName = json['firstName'];
_lastName = json['lastName'];
}
String? _role;
bool? _banned;
dynamic _bannedTill;
List<Inventory>? _inventory;
dynamic _fcmToken;
String? _profilePictureURL;
String? _id;
String? _createdAt;
String? _updatedAt;
String? _firstName;
String? _lastName;
User copyWith({ String? role,
bool? banned,
dynamic bannedTill,
List<Inventory>? inventory,
dynamic fcmToken,
String? profilePictureURL,
String? id,
String? createdAt,
String? updatedAt,
String? firstName,
String? lastName,
}) => User( role: role ?? _role,
banned: banned ?? _banned,
bannedTill: bannedTill ?? _bannedTill,
inventory: inventory ?? _inventory,
fcmToken: fcmToken ?? _fcmToken,
profilePictureURL: profilePictureURL ?? _profilePictureURL,
id: id ?? _id,
createdAt: createdAt ?? _createdAt,
updatedAt: updatedAt ?? _updatedAt,
firstName: firstName ?? _firstName,
lastName: lastName ?? _lastName,
);
String? get role => _role;
bool? get banned => _banned;
dynamic get bannedTill => _bannedTill;
List<Inventory>? get inventory => _inventory;
dynamic get fcmToken => _fcmToken;
String? get profilePictureURL => _profilePictureURL;
String? get id => _id;
String? get createdAt => _createdAt;
String? get updatedAt => _updatedAt;
String? get firstName => _firstName;
String? get lastName => _lastName;
Map<String, dynamic> toJson() {
final map = <String, dynamic>{};
map['role'] = _role;
map['banned'] = _banned;
map['bannedTill'] = _bannedTill;
if (_inventory != null) {
map['inventory'] = _inventory?.map((v) => v.toJson()).toList();
}
map['fcmToken'] = _fcmToken;
map['profilePictureURL'] = _profilePictureURL;
map['_id'] = _id;
map['createdAt'] = _createdAt;
map['updatedAt'] = _updatedAt;
map['firstName'] = _firstName;
map['lastName'] = _lastName;
return map;
}
}
class Inventory {
Inventory({
String? quantity,
String? description,
String? url,}){
_quantity = quantity;
_description = description;
_url = url;
}
Inventory.fromJson(dynamic json) {
_quantity = json['quantity'];
_description = json['description'];
_url = json['url'];
}
String? _quantity;
String? _description;
String? _url;
Inventory copyWith({ String? quantity,
String? description,
String? url,
}) => Inventory( quantity: quantity ?? _quantity,
description: description ?? _description,
url: url ?? _url,
);
String? get quantity => _quantity;
String? get description => _description;
String? get url => _url;
Map<String, dynamic> toJson() {
final map = <String, dynamic>{};
map['quantity'] = _quantity;
map['description'] = _description;
map['url'] = _url;
return map;
}
}
and this is Json response
{
"details": "got user successfully",
"data": {
"user": {
"role": "user",
"banned": false,
"bannedTill": null,
"inventory": [
{
"quantity": "0",
"description": "hello",
"url": "http://localhost/api/media/inventory-pictures/undefined"
},
{
"quantity": "0",
"description": "mobile",
"url": "http://localhost/api/media/inventory-pictures/undefined"
},
{
"quantity": "0",
"description": "helpo ",
"url": "http://localhost/api/media/inventory-pictures/undefined"
},
{
"quantity": "0",
"description": "desc",
"url": "http://localhost/api/media/inventory-pictures/undefined"
},
{
"quantity": "0",
"description": "descc",
"url": "http://localhost/api/media/inventory-pictures/undefined"
},
{
"quantity": "0",
"description": "hellog",
"url": "http://localhost/api/media/inventory-pictures/undefined"
},
{
"quantity": "0",
"description": "check blue",
"url": "http://localhost/api/media/inventory-pictures/undefined"
},
{
"quantity": "0",
"description": "this is app inventory ",
"url": "http://localhost/api/media/inventory-pictures/undefined"
},
{
"quantity": "0",
"description": "fhbbj",
"url": "http://localhost/api/media/inventory-pictures/undefined"
},
{
"quantity": "0",
"description": "yuj",
"url": "http://localhost/api/media/inventory-pictures/undefined"
},
{
"quantity": "0",
"description": "hello",
"url": "http://localhost/api/media/inventory-pictures/undefined"
},
{
"quantity": "0",
"description": "ghb",
"url": "http://localhost/api/media/inventory-pictures/undefined"
},
{
"quantity": "0",
"description": "tctcct",
"url": "http://localhost/api/media/inventory-pictures/undefined"
},
{
"quantity": "0",
"description": "Saad Ebad",
"url": "http://localhost/api/media/inventory-pictures/undefined"
},
{
"quantity": "0",
"description": "vbvhh",
"url": "http://localhost/api/media/inventory-pictures/undefined"
},
{
"quantity": "0",
"description": "Saad",
"url": "http://localhost/api/media/inventory-pictures/undefined"
},
{
"quantity": "0",
"description": "saas",
"url": "http://localhost/api/media/inventory-pictures/undefined"
},
{
"quantity": "0",
"description": "hwhah",
"url": "http://localhost/api/media/inventory-pictures/undefined"
},
{
"quantity": "0",
"description": "gbbhh",
"url": "http://localhost/api/media/inventory-pictures/undefined"
},
{
"quantity": "0",
"description": "hebsb",
"url": "http://localhost/api/media/inventory-pictures/undefined"
},
{
"quantity": "0",
"description": "ndnsn",
"url": "http://localhost/api/media/inventory-pictures/undefined"
},
{
"quantity": "0",
"description": "hello brother ",
"url": "http://localhost/api/media/inventory-pictures/undefined"
},
{
"quantity": "0",
"description": "hfnfnf",
"url": "http://localhost/api/media/inventory-pictures/undefined"
},
{
"quantity": "0",
"description": "ffg",
"url": "http://localhost/api/media/inventory-pictures/undefined"
},
{
"quantity": "0",
"description": "ghh",
"url": "http://localhost/api/media/inventory-pictures/undefined"
},
{
"quantity": "0",
"description": "hawa hawa",
"url": "http://localhost/api/media/inventory-pictures/undefined"
},
{
"quantity": "0",
"description": "gggg",
"url": "http://localhost/api/media/inventory-pictures/undefined"
},
{
"quantity": "0",
"description": "Asif",
"url": "http://localhost/api/media/inventory-pictures/undefined"
}
],
"fcmToken": null,
"profilePictureURL": "https://cdn.luxe.digital/media/2019/09/12090502/business-professional-dress-code-men-style-luxe-digital.jpg",
"_id": "624bac63fbf73b08462af651",
"createdAt": "2022-04-05T02:41:39.754Z",
"updatedAt": "2022-04-10T06:36:37.818Z",
"firstName": "saad",
"lastName": "ebad"
},
"posts": [
{
"tradeWithPictures": [
{
"publicID": "bartermade/post-pictures/oqzvs8cnioj2yncpembd",
"url": "https://res.cloudinary.com/dtksvfjsi/image/upload/v1649202575/bartermade/post-pictures/oqzvs8cnioj2yncpembd.jpg"
}
],
"tags": [
"Camera",
"Mobile",
"Cycles"
],
"pictures": [
{
"publicID": "bartermade/post-pictures/vuepwgaymffwhdvcz3lx",
"url": "https://res.cloudinary.com/dtksvfjsi/image/upload/v1649202573/bartermade/post-pictures/vuepwgaymffwhdvcz3lx.jpg"
}
],
"comments": [
{
"text": "bsbsn",
"profile": {
"role": "user",
"banned": false,
"bannedTill": null,
"inventory": [],
"fcmToken": "",
"profilePictureURL": "https://cdn.luxe.digital/media/2019/09/12090502/business-professional-dress-code-men-style-luxe-digital.jpg",
"_id": "624bac63fbf73b08462af651",
"createdAt": "2022-04-05T02:41:39.754Z",
"updatedAt": "2022-04-06T04:29:06.535Z",
"firstName": "saad",
"lastName": "ebad"
}
}
],
"_id": "624cd591fbf73b08462afb73",
"title": "Infinix",
"description": "Infinix note 8",
"category": "mobiles",
"subCategory": "smart phones",
"condition": "Old",
"user": "624bac63fbf73b08462af651",
"createdAt": "2022-04-05T23:49:37.116Z",
"updatedAt": "2022-04-06T04:33:40.069Z"
}
]
}
}

Answer 1

There is an issue with the keys of the json used to get the inventory list. Try with this:
var data = value['data']['user']['inventory'];