Retrieve a single user from the REST endpoint

user.go

// UserField is a field that returns a single user
var UserField = &graphql.Field{
	Type: userObject,
	Args: graphql.FieldConfigArgument{
		"user_id": &graphql.ArgumentConfig{
			Description: "The ID of the user you want to retrieve",
			Type:        graphql.NewNonNull(graphql.Int),
		},
	},
	Resolve: func(p graphql.ResolveParams) (interface{}, error) {

		return fetchSingleUser(p.Args["user_id"].(int)), nil
	},
}

// Find a single user for the given userID
func fetchSingleUser(userID int) models.User {

	response, err := http.Get("https://jsonplaceholder.typicode.com/users/" + strconv.Itoa(userID))

	if err != nil {
		log.Fatal(err)
	}

	responseData, err := ioutil.ReadAll(response.Body)

	if err != nil {
		log.Fatal(err)
	}

	var user models.User

	err = json.Unmarshal(responseData, &user)

	if err != nil {
		log.Fatal(err)
	}

	return user

}