how to unmarshal json object if object is returning as empty string instead of empty struct

Question

I\'m receiving some data as JSON, but if a object is empty, it does not return a empty struct but a empty string instead, and when unmarshaling, it returns an error.

So

Answer 1

You can have your item type implement the json.Unmarshaler interface.

func (i *item) UnmarshalJSON(data []byte) error {
    if string(data) == `""` {
        return nil
    }

    type tmp item
    return json.Unmarshal(data, (*tmp)(i))
}

https://play.golang.org/p/1TrD57XULo9