failed get post request in golang

Question

I have a problem how to get post request on Go.

I was trying json.Unmarshal() but its still not working

package controllers

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

    "github.com/gin-gonic/gin"
)

//CreateOrder function
func CreateOrder(c *gin.Context) {

    var requestBody struct {
        TransNo string `json:"trans_no"`
    }

    err := json.NewDecoder(c.Request.Body).Decode(&requestBody)

    if err != nil {
        panic(err)
    }

    c.JSON(http.StatusOK, gin.H{"data": requestBody.TransNo})

}

I no have any errors, but the result not showing anything.

this my post data:

{
  "transaction_details": {
    "trans_no": "12400099",
    "gross_amount": 50000
  }
}

I want to get trans_no value

Answer 1

Your requestBody struct would unmarshal correctly if your post data was:

{
    "trans_no": "12400099",
    "gross_amount": 50000
}

but since that information is nested one deeper, you need to include that nesting in your model.

var requestBody struct {
    TransactionDetails struct {
        TransNo string `json:"trans_no"`
    } `json:"transaction_details"`
}