将包含动态键的REST API返回的JSON映射到Golang中的结构

Question

I'm calling a REST API from my Go program which takes n number of hotel ids in the request and returns their data as a JSON. The response is like the following when say I pass 2 ids in the request, 1018089108070373346 and 2017089208070373346 :

{
 "data": {
  "1018089108070373346": {
    "name": "A Nice Hotel",
    "success": true
   },
  "2017089208070373346": {
    "name": "Another Nice Hotel",
    "success": true
   }
  }
}

Since I'm new to Golang I using a JSON Go tool available at http://mholt.github.io/json-to-go/ to get the struct representation for the above response. What I get is:

type Autogenerated struct {
    Data struct {
        Num1017089108070373346 struct {
            Name string `json:"name"`
            Success bool `json:"success"`
        } `json:"1017089108070373346"`
        Num2017089208070373346 struct {
            Name string `json:"name"`
            Success bool `json:"success"`
        } `json:"2017089208070373346"`
    } `json:"data"`
}

I cannot use the above struct because the actual id values and the number of ids I pass can be different each time, the JSON returned will have different keys. How can this situation be mapped to a struct ?

Thanks

Answer 1

Use a map:

type Item struct {
    Name string `json:"name"`
    Success bool `json:"success"`
} 
type Response struct {
    Data map[string]Item `json:"data"`
}

<kbd>Run it on the playground</kbd>