http - Golang-firestore update and delete method not working

Question

I am working on Golang project with firestore as database. I have write controllers for GET, POST, UPDATE, DELETE. But only GET & POST are working. UPDATE and DELETE are not working. CreateGoal, GetGoals, GetGoal are working. I can see data in firestore while using these methods. But can not see with the methods UpdateGoal & DeleteGoal. I am not understanding where I am doing mistakes. I have provided the code below. You can find complete code on this link - https://github.com/RohitKuwar/goLang-restAPI Thank you.

import (
    "encoding/json"
    "net/http"
    "strconv"
    "github.com/gorilla/mux"
    "github.com/projgo/gotest/models"
)


var goals []models.Goals

// controllers
func GenerateGoals(w http.ResponseWriter,r *http.Request){
    w.Header().Set("Content-Type","application/json")
    goals = append(goals, models.Goals{Id:1,Title: "Read on event loop",Status: "completed"})
    goals = append(goals, models.Goals{Id:2,Title: "read just javaScript articles",Status: "active"})
    goals = append(goals, models.Goals{Id:3,Title: "learn go",Status: "closed"})

    var status = map[string]string{"message":"Succesfully generated a goals"}
    json.NewEncoder(w).Encode(status)
}

func CreateGoal(w http.ResponseWriter,r *http.Request){
    w.Header().Set("Content-Type","application/json")
    var goal models.Goals
    _ =json.NewDecoder(r.Body).Decode(&goal)
    goals=append(goals,goal)
    var status = map[string]string{"message":"Succesfully created a goal"}
    json.NewEncoder(w).Encode(status)
}

func GetGoals(w http.ResponseWriter,r *http.Request){
    w.Header().Set("Content-Type","application/json")
    if len(goals) ==0 {
        var status = map[string]string{"message":"Generate goals by hiting / route"}
        json.NewEncoder(w).Encode(status)
    }else {
        json.NewEncoder(w).Encode(goals)
    }
}

func GetGoal(w http.ResponseWriter,r *http.Request){
    w.Header().Set("Content-Type","application/json")
    params := mux.Vars(r)
    for _,goal:= range goals{
        if strconv.Itoa(goal.Id) == params["id"] {
            json.NewEncoder(w).Encode(goal)
            return
        }
    }
    http.Error(w,"No goal found",http. StatusBadRequest)
}

func UpdateGoal(w http.ResponseWriter,r *http.Request){
    w.Header().Set("Content-Type","application/json")
    params := mux.Vars(r)
    for index,goal:= range goals{
        if strconv.Itoa(goal.Id) == params["id"] {
            goals = append(goals[:index], goals[index+1:]...) //remove a goal from map
            var goal models.Goals
            _ =json.NewDecoder(r.Body).Decode(&goal)
            goals=append(goals,goal)
            var status = map[string]string{"message":"Succesfully updated a goal"}
            json.NewEncoder(w).Encode(status)
            return
        }
    }
    http.Error(w,"No goal found",http. StatusBadRequest)
}

func DeleteGoal(w http.ResponseWriter,r *http.Request){
    w.Header().Set("Content-Type","application/json")
    params := mux.Vars(r)
    for index,goal:= range goals{
        if strconv.Itoa(goal.Id) == params["id"] {
            goals = append(goals[:index], goals[index+1:]...)
            var status = map[string]string{"message":"Succesfully deleted a goal"}
            json.NewEncoder(w).Encode(status)
            return
        }
    }
    http.Error(w,"No goal found",http. StatusBadRequest)
}```

标签： httpgogoogle-cloud-firestore