Iterating list json object in golang - go

Question

I have this piece of code to read a JSON object. I need to easily iterate over all the elements in the 'outputs'/data/concepts key.
Is there a better way to do it?
Also, how can I access the attributes of value:
value.app_id, value.id..etc
Code:
package main
import (
"encoding/json"
"fmt"
)
var jsonBytes = []byte(`
{"outputs": [{
"data": {"concepts":
[{"app_id": "main",
"id": "ai_GTvMbVGh",
"name": "ancient",
"value": 0.99875855}]
}}
],
"status": {"code": 10000, "description": "Ok"}}`)
func main() {
var output map[string]interface{}
err := json.Unmarshal([]byte(jsonBytes), &output)
if err != nil {
print(err)
}
for _, value := range output["outputs"].([]interface{}) {
//fmt.Println(value.(map[string]interface{})["data"].(map[string]interface{})["concepts"]).([]interface{})
//fmt.Println(value.(map[string]interface{})["data"].(map[string]interface{})["concepts"])
for _, value := range value.(map[string]interface{})["data"].(map[string]interface{})["concepts"].([]interface{}){
fmt.Println(value)
}
}
//fmt.Printf("%+v\n", output)
}

Answer 1

the best way will be to Unmarshal the JSON into an struct and iterate over the values,
func main() {
var output StructName
err := json.Unmarshal([]byte(jsonBytes), &output)
if err != nil {
print(err)
}
for _, value := range output.Outputs {
for _, val := range value.Data.Concepts {
fmt.Printf("AppId:%s\nID:%s\nname:%s\nvalue:%f", val.AppID, val.ID, val.Name, val.Value)
}
}
}
type StructName struct {
Outputs []struct {
Data struct {
Concepts []struct {
AppID string `json:"app_id"`
ID string `json:"id"`
Name string `json:"name"`
Value float64 `json:"value"`
} `json:"concepts"`
} `json:"data"`
} `json:"outputs"`
Status struct {
Code int `json:"code"`
Description string `json:"description"`
} `json:"status"`
}