Flutter：“类型'Teams' 不是类型转换中'int' 类型的子类型”错误来自请求

如何解决Flutter：“类型'Teams' 不是类型转换中'int' 类型的子类型”错误来自请求

我在 Flutter 中发送请求有问题，我有这个模型：

import 'dart:convert';
List<Teams> teamsFromJson(String str) =>
    List<Teams>.from(json.decode(str).map((x) => Teams.fromJson(x)));
String teamsToJson(List<Teams> data) =>
    json.encode(List<dynamic>.from(data.map((x) => x.toJson())));
class Teams {
  Teams({
    this.club,this.price,this.surename,this.id,this.league,});
  final club;
  final price;
  final surename;
  final id;
  final league;
  factory Teams.fromJson(Map<String,dynamic> json) => Teams(
        club: json["club"],price: json["price"],surename: json["surename"],id: json["id"],league: json["league"],);
  Map<String,dynamic> toJson() => {
        "club": club,"price": price,"surename": surename,"id": id,"league": league,};
}

我添加初始值并在提供程序中更新它们：

List<Teams> get teams => _teams;
List<Teams> _teams = [
    Teams(club: "",price: 0,surename: "",id: "",league: ""),Teams(club: "",]
addToTeam(data,index) {
teams[index]=Team(club: data.club,price: data.price,surename: data.surname,id: data.id,league: data.leagueName);
}

它工作正常，现在我想将列表团队作为请求发送，我添加按钮并创建如下方法：

onPressed: () {
       ApiService().saveTeam(teamsProvider.teams);
      }

在 ApiService 上我有这个请求：

class ApiService {
    var url = 'http://10.0.2.2:8000/api/v1';

  Future saveTeam(data) async {
    var newurl = Uri.parse(url + '/send_test');
    try {
      var response = await http.post(newurl,body: data);
      var result = jsonDecode(response.body);
      print(result);
    } catch (e) {
      print('error : $e');
    }
  }
}

api 请求只是在 laravel 中返​​回请求：

public function send_test(Request $request)
    {
        return $request;
    }

因此我收到此错误消息：type 'Teams' is not a subtype of type 'int' in type cast 我该如何解决这个问题？

解决方法

我自己解决了，我把Team list转成Sting，用json解码：

class ApiService {
  var url = 'http://10.0.2.2:8000/api/v1';

  Future saveTeam(List<Teams> data) async {
    var list = [];
    data.map((e) {
      list.add({
        "club": e.club,"price": e.price,"surename": e.surename,"id": e.id,"league": e.league
      });
    }).toList();
    try {
      var newurl = Uri.parse(url + '/send_test');
      var response = await http.post(newurl,body: jsonEncode(list));
      var result = jsonDecode(response.body);
      print(result);
    } catch (e) {
      print('error : $e');
    }
  }
}

然后在 laaravel/lumen 中的 api 接收到 json 并再次解码：

public function send_test(Request $request)
    {
        $result = json_decode($request->getContent(),true);
        return $result;
    }