If I have a struct that has
type User struct {
gorm.Model
ID int `gorm:"primary_key"`
//////// Stuff here
Vouch []Vouches ` json:"vouches"`
}
Sometimes I want the vouch field to be populated, sometimes I don't
When it's not populated, it still sends 0 values when I marshal it via json
How can I send nothing for the Vouch field, if I specify
using json:"-" just 0's it all the time
