I\'ve created an API in Go that, upon being called, performs a query, creates an instance of a struct, and then encodes that struct as JSON before sending back to the caller
I created this function to convert struct to JSON string by ignoring some fields. Hope it will help.
func GetJSONString(obj interface{}, ignoreFields ...string) (string, error) {
toJson, err := json.Marshal(obj)
if err != nil {
return "", err
}
if len(ignoreFields) == 0 {
return string(toJson), nil
}
toMap := map[string]interface{}{}
json.Unmarshal([]byte(string(toJson)), &toMap)
for _, field := range ignoreFields {
delete(toMap, field)
}
toJson, err = json.Marshal(toMap)
if err != nil {
return "", err
}
return string(toJson), nil
}
Example: https://play.golang.org/p/nmq7MFF47Gp