我正在尝试使用flutter和woocommece api构建一个电子商务应用程序。但是当我尝试按下addtocart按钮时，这就是我得到的：
products:List (1 item)
userId:null
hashCode:383444147
runtimeType:Type (CartRequestModel)
我得到了产品，但没有得到 userId。
这是我的 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";
}
这是我的 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();
});
}
}
在这里，我尝试构建一个 addtocart 函数并调用 api_service.dart 文件
这是我的 ApiService.dart 代码：
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;
}
我还有两个模型，一个用于购物车请求，另一个用于购物车响应模型，我也提供此代码
这是我的 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;
}
}
这是我的 CartResponse 模型，下面是我的代码，如果需要，请检查：
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;
}
}