Get Struct Tag in Go

structTag.go

func Tag(s interface{}, name string) (reflect.StructTag, error) {
	var tag reflect.StructTag

	t := reflect.TypeOf(s)

	// Prevent running on types other than struct
	if t.Kind() != reflect.Struct {
		return "", errors.New(fmt.Sprintf("%v is not a struct\n", t.Name()))
	}
	
	/*
	// Prevent running on types other than struct
	if reflect.TypeOf(model).Kind() != reflect.Ptr {
		return ErrNotStruct, ErrNotStruct.Error()
	} else if reflect.TypeOf(model).Elem().Kind() != reflect.Struct {
		return ErrNotStruct, ErrNotStruct.Error()
	}
	*/

	field, ok := reflect.TypeOf(s).FieldByName(name)
	if !ok {
		return tag, errors.New("Field not found")
	}

	tag = field.Tag

	return tag, nil
}