json.Marshal(struct) returns “{}”

Question

type TestObject struct {
    kind string `json:\"kind\"`
    id   string `json:\"id, omitempty\"`
    name  string `json:\"name\"`
    email string `json:\"email\"`
         


        

Answer 1

In golang

in struct first letter must uppercase ex. phonenumber -> PhoneNumber

======= Add detail

First, I'm try coding like this

type Questions struct {
    id           string
    questionDesc string
    questionID   string
    ans          string
    choices      struct {
        choice1 string
        choice2 string
        choice3 string
        choice4 string
    }
}

golang compile is not error and not show warning. But response is empty because something

After that, I search google found this article

Struct Types and Struct Type Literals Article then... I try edit code.

//Questions map field name like database
type Questions struct {
    ID           string
    QuestionDesc string
    QuestionID   string
    Ans          string
    Choices      struct {
        Choice1 string
        Choice2 string
        Choice3 string
        Choice4 string
    }
}

Is work.

Hope for help.