Assigning null to JSON fields instead of empty strings

Question

Since empty string is the zero/default value for Go string, I decided to define all such fields as interface{} instead. for example

Answer 1

Can be used https://github.com/guregu/null

type student struct {
FirstName  null.String `json:"first_name"`
MiddleName null.String `json:"middle_name"`
LastName   null.String `json:"last_name"`}