I’m trying to find a bson struct tag to create a unique index just like the one in the image attached to this post but for mongodb. i tried searching and i found nothing Close to what i need but this stackoverflow post https://stackoverflow.com/questions/30831316/how-to-specify-a-struct-with-a-multi-column-unique-index-for-gorm
Why don’t you just set the id to whatever ( e.g UUID) you want in your struct constructor. Alternatively I guess there are also mongodb specific client libraries for Go
The documentation of package mongo says for example ``` If the document does not have an _id field when transformed into BSON, one will be added automatically to the marshalled document.
Hello, Thanks for responding. ^^
i didn’t want to make any changes to the id field.
i have a user struct like this.
type User struct { ID primitive.ObjectID `bson:"_id,omitempty" json:"id"` FirstName string `bson:"firstname" json:"firstname"` LastName string `bson:"lastname" json:"lastname"` Email string `bson:"email" index:"email" json:"email"` }i wanted the Email field to be unique, just like the ID. so when a new user tries to create an account with the same email, it’ll return an error.
it isn’t a problem anymore because i figured out a way… i created a custom struct tag that validates whether a user with the same email exist in the database.