on my code repsonse.body or response.statuscode does not work. What is wrong here?
class Kategori {
int? id;
String? name;
Kategori({
this.id,
this.name
});
Future<List<Categories>> getAllCategories() async {
http.Response response = await http.get(Uri.parse('https://www.catshops.com/getAllCategories'));
List<Categories> list = [];
return getAllCategories();
}
try {
if (response.statusCode == 200) {
Map<String, dynamic> map = json.decode(response.body);
for (var map in map['categories']) {
list.add(Categories(id: map['id'], name: map['name']));
}
}
} catch (e, _) {
Btw try statement does not work, either
try this
class Categories {
int? id;
String? name;
Categories({this.id, this.name});
}
Future<List<Categories>> getAllCategories() async {
http.Response response =
await http.get(Uri.parse('https://www.catshops.com/getAllCategories'));
List<Categories> list = [];
try {
if (response.statusCode == 200) {
Map<String, dynamic> map = json.decode(response.body);
for (var map in map['categories']) {
list.add(Categories(id: map['id'], name: map['name']));
}
}
} catch (e, _) {}
return list;
}
you can use this :
class Category {
int id;
String name;
Category({this.id, this.name});
Category.fromJson(Map<String, dynamic> json) {
id = json['id'];
name = json['name'];
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['id'] = this.id;
data['name'] = this.name;
return data;
}
}
Future<List<Category>> getAllCategory() async {
http.Response response =
await http.get(Uri.parse('https://www.catshops.com/getAllCategories'));
List<Category> list = [];
try {
if (response != null && response.statusCode == 200) {
list = (response.data as List)
.map((item) => Category.fromJson(item))
.toList();
}
} catch (e) {
print(e.toString());
}
return list;
}
you can create you'r class (in dart struct) with this website.
Related
I have the following 4 classes. In this, only the ProductGroup is saved, ProductVariant, ProductSize and ProductColor are not stored. Please help me with this.
product_group.dart
#Collection()
class ProductGroup {
late Id id;
#Index(caseSensitive: false)
late String productGroupName;
final productVariants = IsarLinks<ProductVariant>();
ProductGroup();
ProductGroup.fromJson(Map<String, dynamic> json) {
id = json['Id'];
productGroupName = json['PG'];
if (json['Ps'] != null) {
json['Ps'].forEach((variant) {
productVariants.add(ProductVariant.fromJson(variant));
});
}
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = <String, dynamic>{};
data['Id'] = id;
data['PG'] = productGroupName;
data['Ps'] = productVariants.map((variant) => variant.toJson()).toList();
return data;
}
}
product_variant.dart
#Collection()
class ProductVariant {
late Id id;
late String variantName;
final productSizes = IsarLinks<ProductSize>();
ProductVariant();
ProductVariant.fromJson(Map<String, dynamic> json) {
id = json['Id'];
variantName = json['St'];
if (json['Ss'] != null) {
json['Ss'].forEach((v) {
productSizes.add(ProductSize.fromJson(v));
});
}
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = <String, dynamic>{};
data['Id'] = id;
data['St'] = variantName;
data['Ss'] = productSizes.map((v) => v.toJson()).toList();
return data;
}
}
product_size.dart
#Collection()
class ProductSize {
late Id id;
late String size;
final productColors = IsarLinks<ProductColor>();
ProductSize();
ProductSize.fromJson(Map<String, dynamic> json) {
id = json['Id'];
size = json['S'];
if (json['Cs'] != null) {
json['Cs'].forEach((v) {
productColors.add(ProductColor.fromJson(v));
});
}
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = <String, dynamic>{};
data['Id'] = id;
data['S'] = size;
data['Cs'] = productColors.map((color) => color.toJson()).toList();
return data;
}
}
product_color.dart
#Collection()
class ProductColor {
late Id id;
late String colorName;
late String colorHexCode;
ProductColor();
ProductColor.fromJson(Map<String, dynamic> json) {
id = json['Id'];
colorName = json['C'];
colorHexCode = json['CC'];
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = <String, dynamic>{};
data['Id'] = id;
data['C'] = colorName;
data['CC'] = colorHexCode;
return data;
}
}
I am parsing the json and saving it in Isar
convertJsonToIsar() async {
try {
// For testing purposes, loading Json from assets, in Prod, Json will be fetched from server
final String response = await rootBundle.loadString('assets/pr_dump.json');
final data = await json.decode(response);
List<ProductGroup> productGroupList = [];
data.forEach((item) {
productGroupList.add(ProductGroup.fromJson(item));
});
Isar _isar = getIsar();
_isar.writeTxnSync(() {
_isar.productGroups.putAllSync(productGroupList, saveLinks: true);
});
} catch (e) {
// Handle Error
print('Caught Error');
print(e.toString());
return 0;
}
}
Only the ProductGroup is stored, ProductVariant, ProductSize and ProductColor are not stored. Please help me with this.
i'm new to learning darts and flutter i'm making code to display data with FutureBuilder, in console window i got the response i want, but the snapshot.hashData code always returns false
Myclass model
class ResponseDataBarang {
int? _kode;
String? _pesan;
List<Data>? _data;
ResponseDataBarang({int? kode, String? pesan, List<Data>? data}) {
if (kode != null) {
this._kode = kode;
}
if (pesan != null) {
this._pesan = pesan;
}
if (data != null) {
this._data = data;
}
}
int? get kode => _kode;
set kode(int? kode) => _kode = kode;
String? get pesan => _pesan;
set pesan(String? pesan) => _pesan = pesan;
List<Data>? get data => _data;
set data(List<Data>? data) => _data = data;
ResponseDataBarang.fromJson(Map<String, dynamic> json) {
_kode = json['kode'];
_pesan = json['pesan'];
if (json['data'] != null) {
_data = <Data>[];
json['data'].forEach((v) {
_data!.add(new Data.fromJson(v));
});
}
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['kode'] = this._kode;
data['pesan'] = this._pesan;
if (this._data != null) {
data['data'] = this._data!.map((v) => v.toJson()).toList();
}
return data;
}
}
class Data {
String? _kdBrg;
String? _nmBrg;
Data(
{String? kdBrg,
String? nmBrg,
}) {
if (kdBrg != null) {
_kdBrg = kdBrg;
}
if (nmBrg != null) {
_nmBrg = nmBrg;
}
}
String? get kdBrg => _kdBrg;
set kdBrg(String? kdBrg) => _kdBrg = kdBrg;
String? get nmBrg => _nmBrg;
Data.fromJson(Map<String, dynamic> json) {
_kdBrg = json['KdBrg'];
_nmBrg = json['NmBrg'];
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = Map<String, dynamic>();
data['KdBrg'] = _kdBrg;
data['NmBrg'] = _nmBrg;
return data;
}
}
My request
i am confused for the json format as generated what return value is suitable for my method request
Future<ResponseDataBarang> ambilDataBarang() async {
Dio apiClient=ApiClient().init();
final response=await apiClient.post('http://192.168.1.8/aplikasikasir/data_barang.php', data: FormData.fromMap(({
"NmUser":"T",
})));
return ResponseDataBarang.fromJson(response.data);
}
}
Response i got
{"kode":1,"pesan":"Data Tersedia","data":[{"KdBrg":"170164017","NmBrg":"ST PP HONGNIE SANDAL","Harga":"38000","Stock_Akhir":"0","Sat_1":"PT","Sat_2":"","Sat_3":"","Sat_4":"","Isi_2":"0","Isi_3":"0","Isi_4":"0","KdSupl":"","NmSupl":"","Ket1":""}]}
This is my model class and I am trying to get all the data but getting error and don't know why.
HomePageModel homePageModelFromJson(String str) => HomePageModel.fromJson(json.decode(str));
String homePageModelToJson(HomePageModel data) => json.encode(data.toJson());
class HomePageModel with ChangeNotifier {
HomePageModel({
this.data,
});
List<Datum>? data;
factory HomePageModel.fromJson(Map<String, dynamic> json) => HomePageModel(
data: List<Datum>.from(json["data"]!.map((x) => Datum.fromJson(x))),
);
Map<String, dynamic> toJson() => {
"data": List<dynamic>.from(data!.map((x) => x.toJson())),
};
}
class Datum {
Datum({
this.schoolid,
this.name,
this.logo,
this.address,
this.contact,
this.principalname,
this.principalcontact,
this.slogan,
this.webAddress,
this.description,
this.email,
this.pan,
this.establishedYear,
});
String? schoolid;
String? name;
String? logo;
String? address;
String? contact;
String? principalname;
String? principalcontact;
String? slogan;
String? webAddress;
String? description;
String? email;
String? pan;
int? establishedYear;
factory Datum.fromJson(Map<String, dynamic> json) => Datum(
schoolid: json["schoolid"],
name: json["name"],
logo: json["logo"],
address: json["address"],
contact: json["contact"],
principalname: json["principalname"],
principalcontact: json["principalcontact"],
slogan: json["slogan"],
webAddress: json["web_address"] == null ? null : json["web_address"],
description: json["description"] == null ? null : json["description"],
email: json["email"],
pan: json["pan"],
establishedYear: json["established_year"],
);
Map<String, dynamic> toJson() => {
"schoolid": schoolid,
"name": name,
"logo": logo,
"address": address,
"contact": contact,
"principalname": principalname,
"principalcontact": principalcontact,
"slogan": slogan,
"web_address": webAddress == null ? null : webAddress,
"description": description == null ? null : description,
"email": email,
"pan": pan,
"established_year": establishedYear,
};
}
This is how I am trying to fetch data:
class HomePageModels with ChangeNotifier{
List<HomePageModel> _hItem = [];
List<HomePageModel> get hItem{
return [..._hItem];
}
Future<void> getHomeData(BuildContext context) async{
const url = "https://shikshyasoftware.com.np/CoreApplicationandAPIService-4617993073/api/school";
try{
// EasyLoading.show(status: 'Loading...');
final response = await http.get(Uri.parse(url));
final extractedData = json.decode(response.body);
List<HomePageModel> loadedHomeData = [];
if(extractedData == null){
return;
}
if(response.statusCode == 200){
print(extractedData);
}
extractedData.forEach((element){
loadedHomeData.add(HomePageModel.fromJson(element));
});
_hItem = loadedHomeData;
// EasyLoading.showSuccess("data fetched sucessfull");
notifyListeners();
}catch(e){
rethrow;
}
}
}
But I am getting error:
[ERROR:flutter/lib/ui/ui_dart_state.cc(209)] Unhandled Exception: type '(dynamic) => Null' is not a subtype of type '(String, dynamic) => void' of 'f'
The problem is the way you are trying to parse the data, you don't need to loop over every element to parse it, in your model just make it return a list type like this,
class HomePageModel with ChangeNotifier {
List<Datum>? data;
HomePageModel({this.data});
HomePageModel.fromJson(Map<String, dynamic> json) {
if (json['data'] != null) {
data = <Datum>[];
json['data'].forEach((v) {
data!.add(new Datum.fromJson(v));
});
}
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
if (this.data != null) {
data['data'] = this.data!.map((v) => v.toJson()).toList();
}
return data;
}
}
class Datum {
Datum({
this.schoolid,
this.name,
this.logo,
this.address,
this.contact,
this.principalname,
this.principalcontact,
this.slogan,
this.webAddress,
this.description,
this.email,
this.pan,
this.establishedYear,
});
String? schoolid;
String? name;
String? logo;
String? address;
String? contact;
String? principalname;
String? principalcontact;
String? slogan;
String? webAddress;
String? description;
String? email;
String? pan;
int? establishedYear;
Datum.fromJson(Map<String, dynamic> json) {
schoolid = json["schoolid"];
name = json["name"];
logo = json["logo"];
address = json["address"];
contact = json["contact"];
principalname = json["principalname"];
principalcontact = json["principalcontact"];
slogan = json["slogan"];
webAddress = json["web_address"];
description = json["description"];
email = json["email"];
pan = json["pan"];
establishedYear = json["established_year"];
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['schoolid'] = this.schoolid;
data['name'] = this.name;
data['logo'] = this.logo;
data['address'] = this.address;
data['contact'] = this.contact;
data['principalname'] = this.principalname;
data['principalcontact'] = this.principalcontact;
data['slogan'] = this.slogan;
data['web_address'] = this.webAddress;
data['description'] = this.description;
data['email'] = this.email;
data['pan'] = this.pan;
data['established_year'] = this.establishedYear;
return data;
}
}
and in your view model you can just parse the extracted data from response.body like this,
class HomePageModels with ChangeNotifier {
HomePageModel? _hItem;
HomePageModel get hItem {
return _hItem!;
}
Future<void> getHomeData(BuildContext context) async {
const url =
"https://shikshyasoftware.com.np/CoreApplicationandAPIService-
4617993073/api/school";
try {
// EasyLoading.show(status: 'Loading...');
final response = await http.get(Uri.parse(url));
final extractedData = json.decode(response.body);
if (extractedData == null) {
return;
}
if (response.statusCode == 200) {
print(extractedData);
}
HomePageModel loadedHomeData =
HomePageModel.fromJson(extractedData);
_hItem = loadedHomeData;
// EasyLoading.showSuccess("data fetched sucessfull");
notifyListeners();
} catch (e) {
rethrow;
}
}
}
getHomeData(BuildContext context) async {
const url =
"https://shikshyasoftware.com.np/CoreApplicationandAPIService-4617993073/api/school";
try {
// EasyLoading.show(status: 'Loading...');
final response = await http.get(Uri.parse(url));
if (response.statusCode == 200) {
final extractedData = json.decode(response.body);
List loadedHomeData = extractedData;
_hItem = loadedHomeData.map((e) => HomePageModel.fromJson(e)).toList();
}
notifyListeners();
return _hItem;
} catch (e) {
rethrow;
}
}
My PokemonModel and Results class, i wan't return a List
class PokemonModel {
int count;
String next;
String previous;
List<Results> results;
PokemonModel({this.count, this.next, this.previous, this.results});
PokemonModel.fromJson(Map<String, dynamic> json) {
count = json['count'];
next = json['next'];
previous = json['previous'];
if (json['results'] != null) {
results = [];
json['results'].forEach((v) {
results.add(new Results.fromJson(v));
});
}
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['count'] = this.count;
data['next'] = this.next;
data['previous'] = this.previous;
if (this.results != null) {
data['results'] = this.results.map((v) => v.toJson()).toList();
}
return data;
}
}
class Results {
String name;
String url;
Results({this.name, this.url});
Results.fromJson(Map<String, dynamic> json) {
name = json['name'];
url = json['url'];
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['name'] = this.name;
data['url'] = this.url;
return data;
}
}
I try use this on repository, i'll need ['next'], ['previous'] and results data to use in widgets but i cannot convert the data to a list of PokemonModel.
That's my current repository where i try get data.
class PokemonRepository implements IPokemonRepository {
Dio _dio;
final String url = 'https://pokeapi.co/api/v2/pokemon/';
PokemonRepository([Dio dio]) : _dio = dio ?? Dio();
#override
Future<List<PokemonModel>> getPokemons() async {
final response = await _dio.get(url);
final poke = PokemonModel.fromJson(response.data);
//how parse and return a list of pokemonmodel?
}
}
There are a couple of ways you can do it.
// method 1 (declarative/functional programming)
final List<PokemonModel> myList = response
.map<PokemonModel>((item) => PokemonModel.fromJson(item))
.toList();
return myList;
or
// method 2 (imperative)
final myList2 = <PokemonModel>[];
for (final Map<String, dynamic> item in response) {
myList2.add(PokemonModel.fromJson(item));
}
return myList2;
I've seen it done both ways. Both return the same result.
I am trying to build an e-commerce app using flutter and woocommece api.But when i try to press addtocart button this is what i get :
products:List (1 item)
userId:null
hashCode:383444147
runtimeType:Type (CartRequestModel)
i get products but i am not getting userId.
Here is my config.dart:
class Config {
static String key = "ck_xxxxxxxxxxxxxxxxxxxxxxxxxx";
static String secret = "cs_xxxxxxxxxxxxxxxxxxxx7dc9feb";
static String url = "https://gngbd.xyz/wp-json/wc/v3";
static String customerURL = "/customers";
static String tokenUR = "https://gngbd.xyz/wp-json/jwt-auth/v1/token";
static String categoryURL = "/products/categories";
static String productsURL = "/products";
static String todayOffersTagId = "20";
static String addToCartURL = "/addtocart";
static String cartURL = "/cart";
static String userId = "4";
}
Here is my cart_provider.dart :
import 'package:flutter/material.dart';
import 'package:grocerry/api_service.dart';
import 'package:grocerry/models/cart_request_model.dart';
import 'package:grocerry/models/cart_response_model.dart';
class CartProvider with ChangeNotifier {
ApiService apiService;
List<CartItem> _cartItems;
List<CartItem> get CartItems => _cartItems;
double get totalRecords => _cartItems.length.toDouble();
CartProvider() {
apiService = new ApiService();
// ignore: deprecated_member_use
_cartItems = new List<CartItem>();
}
void resetStreams() {
apiService = new ApiService();
// ignore: deprecated_member_use
_cartItems = new List<CartItem>();
}
void addToCart(CartProducts product, Function onCallBack) async {
CartRequestModel requestModel = new CartRequestModel();
// ignore: deprecated_member_use
requestModel.products = new List<CartProducts>();
if (_cartItems == null) resetStreams();
_cartItems.forEach((element) {
requestModel.products.add(new CartProducts(
productId: element.productId, quantity: element.qty));
});
var isProductExists = requestModel.products.firstWhere(
(prd) => prd.productId == product.productId,
orElse: () => null);
if (isProductExists != null) {
requestModel.products.remove(isProductExists);
}
requestModel.products.add(product);
await apiService.addToCart(requestModel).then((cartResponseModel) {
if (cartResponseModel.data != null) {
_cartItems = [];
_cartItems.addAll(cartResponseModel.data);
}
onCallBack(cartResponseModel);
notifyListeners();
});
}
}
Here i tried to build a addtocart function and also called the api_service.dart file
Here is my code for ApiService.dart :
Future<CartResponseModel> addToCart(CartRequestModel model) async {
model.userId = int.parse(Config.userId);
CartResponseModel responseModel;
try {
var response = await Dio().post(
Config.url + Config.addToCartURL,
data: model.toJson(),
options: new Options(
headers: {
HttpHeaders.contentTypeHeader: "application/json",
},
),
);
if (response.statusCode == 200) {
responseModel = CartResponseModel.fromJson(response.data);
}
} on DioError catch (e) {
// print(e.message);
if (e.response.statusCode == 404) {
print(e.response.statusCode);
} else {
print(e.message);
print(e.request);
}
}
return responseModel;
}
Future<CartResponseModel> getCartItems() async {
CartResponseModel responseModel;
try {
String url = Config.url +
Config.cartURL +
"?user_id=${Config.userId}&consumer_key=${Config.key}&consumer_secret=${Config.secret}";
print(url);
var response = await Dio().post(
url,
options: new Options(
headers: {
HttpHeaders.contentTypeHeader: "application/json",
},
),
);
if (response.statusCode == 200) {
responseModel = CartResponseModel.fromJson(response.data);
}
} on DioError catch (e) {
print(e.message);
}
return responseModel;
}
I have also two model one is for cart Request and another is for cartresponse model i am also providing this code
Here is my CartRequest.dart
class CartRequestModel {
int userId;
List<CartProducts> products;
CartRequestModel({this.userId, this.products});
CartRequestModel.fromJson(Map<String, dynamic> json) {
userId = json['user_id'];
if (json['products'] != null) {
// ignore: deprecated_member_use
products = new List<CartProducts>();
json['products'].forEach((v) {
products.add(new CartProducts.fromJson(v));
});
}
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['user_id'] = this.userId;
if (this.products != null) {
data['products'] = this.products.map((v) => v.toJson()).toList();
}
return data;
}
}
class CartProducts {
int productId;
int quantity;
CartProducts({this.productId, this.quantity});
CartProducts.fromJson(Map<String, dynamic> json) {
productId = json['product_id'];
quantity = json['quantity'];
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['product_id'] = this.productId;
data['quantity'] = this.quantity;
return data;
}
}
Here is my CartResponse Model and down below is my code please check if needed :
class CartResponseModel {
bool status;
List<CartItem> data;
CartResponseModel({this.status, this.data});
CartResponseModel.fromJson(Map<String, dynamic> json) {
status = json['status'];
if (json['data'] != null) {
// ignore: deprecated_member_use
data = new List<CartItem>();
json['data'].forEach((v) {
data.add(new CartItem.fromJson(v));
});
}
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['status'] = this.status;
if (this.data != null) {
data['data'] = this.data.map((v) => v.toJson()).toList();
}
return data;
}
}
class CartItem {
int productId;
String productName;
String productRegularPrice;
String productsalePrice;
String thumbNail;
int qty;
double lineTotal;
double lineSubTotal;
CartItem(
{this.productId,
this.productName,
this.productRegularPrice,
this.productsalePrice,
this.thumbNail,
this.qty,
this.lineTotal,
this.lineSubTotal});
CartItem.fromJson(Map<String, dynamic> json) {
productId = json['product_id'];
productName = json['product_name'];
productRegularPrice = json['product_regular_price'];
productsalePrice = json['product_sale_price'];
thumbNail = json['thumbnail'];
qty = json['qty'];
lineSubTotal = double.parse(json['line_subtotal'].toString());
lineTotal = double.parse(json['line_total'].toString());
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['product_id'] = this.productId;
data['product_name'] = this.productName;
data['product_regular_price'] = this.productRegularPrice;
data['product_sale_price'] = this.productsalePrice;
data['thumbnail'] = this.thumbNail;
data['qty'] = this.qty;
data['line_subtotal'] = this.lineSubTotal;
data['line_total'] = this.lineTotal;
return data;
}
}
You need to login , then Testing this