function for converting a struct to map in Golang

Question

I want to convert a struct to map in Golang. It would also be nice if I could use the JSON tags as keys in the created map (otherwise defaulting to field name).

Edi

Answer 1

I like the importable package for the accepted answer, but it does not translate my json aliases. Most of my projects have a helper function/class that I import.

Here is a function that solves my specific problem.

// Converts a struct to a map while maintaining the json alias as keys
func StructToMap(obj interface{}) (newMap map[string]interface{}, err error) {
    data, err := json.Marshal(obj) // Convert to a json string

    if err != nil {
        return
    }

    err = json.Unmarshal(data, &newMap) // Convert to a map
    return
}

And in the main, this is how it would be called...

package main

import (
    "fmt"
    "encoding/json"
    "github.com/fatih/structs"
)

type MyStructObject struct {
    Email string `json:"email_address"`
}

func main() {
    obj := &MyStructObject{Email: "test@test.com"}

    // My solution
    fmt.Println(StructToMap(obj)) // prints {"email_address": "test@test.com"}

    // The currently accepted solution
    fmt.Println(structs.Map(obj)) // prints {"Email": "test@test.com"}
}