How to print statuscode using response.statusCode in Visual Studio Code using Go language

Question

I'm currently doing this tutorial from YouTube : https://www.youtube.com/watch?v=-Sol_RMG_fo&ab_channel=dbestech in the tutorial I can't get the data from back end to flutter, so I asked the YouTuber what should I do?, and he tells me to print statuscode using response.statusCode, but really don't know what I have to do Here's the code:

package main

import (
    "encoding/json"
    "fmt"
    "log"
    "net/http"

    "github.com/gorilla/mux"
)

type Tasks struct {
    ID         string `json:"id"`
    TaskName   string `json:"task_name"`
    TaskDetail string `json:"detail"`
    Date       string `json:"date"`
}

var tasks []Tasks

func allTasks() {
    task := Tasks{
        ID:         "1",
        TaskName:   "New Projects",
        TaskDetail: "You must lead the project and finish it",
        Date:       "2022-01-22"}

    tasks = append(tasks, task)
    task1 := Tasks{
        ID:         "2",
        TaskName:   "Power Project",
        TaskDetail: "We need to hire more stuffs before the deadline",
        Date:       "2022-01-22"}

    tasks = append(tasks, task1)
    fmt.Println("your tasks are", tasks)
}
func homePage(w http.ResponseWriter, r *http.Request) {
    fmt.Println("I am home page")
}
func getTasks(w http.ResponseWriter, r *http.Request) {
    w.Header().Set("Content-Type", "application/")
    json.NewEncoder(w).Encode(tasks)
}
func getTask(w http.ResponseWriter, r *http.Request) {
    taskId := mux.Vars(r)
    flag := false
    for i := 0; i < len(tasks); i++ {
        if taskId["id"] == tasks[i].ID {
            json.NewEncoder(w).Encode(tasks[i])
            flag = true
            break
        }
    }
    if flag == false {
        json.NewEncoder(w).Encode(map[string]string{"status": "Error"})
    }
}
func createTask(w http.ResponseWriter, r *http.Request) {
    fmt.Println("I am home page")
}
func deleteTask(w http.ResponseWriter, r *http.Request) {
    fmt.Println("I am home page")
}
func updateTask(w http.ResponseWriter, r *http.Request) {
    fmt.Println("I am home page")
}

func handleRoutes() {
    router := mux.NewRouter()
    router.HandleFunc("/", homePage).Methods("GET")
    router.HandleFunc("/gettasks", getTasks).Methods("GET")
    router.HandleFunc("/gettask/{id}", getTask).Methods("GET")
    router.HandleFunc("/create", createTask).Methods("POST")
    router.HandleFunc("/delete/{id}", deleteTask).Methods("DELETE")
    router.HandleFunc("/update/{id}", updateTask).Methods("PUT")

    log.Fatal(http.ListenAndServe(":3306", router))

}

func main() {

    allTasks()
    fmt.Println("Hello Flutter boys")
    handleRoutes()
}

Answer 1

I think he said you to print the statuscode from flutter side. Then based on that statuscode you can understand where was the issue.

I have tested your code in local using postman and I am getting data.

Answer 2

Hello @rqb here's the code from flutter

data_controller.dart:

import 'package:flutter_golang_yt/services/service.dart';
import 'package:get/get.dart';

class DataController extends GetxController{
  DataService service = DataService();
  bool _isLoading = false;
  bool get isLoading=> _isLoading;
  List<dynamic> _myData=[];
  List<dynamic> get myData=>_myData;
  Future<void> getData() async {
    _isLoading = true;
    Response response = await service.getData();
    if(response.statusCode==200){
      _myData=response.body;
      print("we got the data");
      update();
    }else{
      print(response.statusCode.toString());
    }
  }

  Future<void> postData(String task, String taskDetail) async {
    _isLoading = true;
    Response response = await service.postData({
      "task_name":task,
      "task_detail": taskDetail
    });
    if(response.statusCode==200){

      update();
      print("data post successfully");
    }else{
      print("data post failed");
    }
  }

}

And services.dart:

import 'package:get/get.dart';

class DataService extends GetConnect implements GetxService{

  Future<Response> getData()async{
    Response response=await get(
      "http://localhost:3306/gettasks",
      headers: {
        'Content-Type':'application/json; charset=UTF-8'
      }
    );

    return response;
  }

  Future<Response> postData(dynamic body)async{
    Response response=await post(
        "http://localhost:3306/create",
        body,
        headers: {
          'Content-Type':'application/json; charset=UTF-8'
        }
    );
    return response;
  }
}

It shows on terminal:

[GETX] Instance "DataController" has been created
[GETX] Instance "DataController" has been initialized
[GETX] Instance "GetMaterialController" has been created
[GETX] Instance "GetMaterialController" has been initialized
I/flutter (15548): null