I am trying to build an invitation system for my app and I feel like there’s a nice way to do what I need, yet I’m not sure about it.

I have a User model and I created a UserInvite model.

When an existing user sends out a new invite, a UserInvite is created. I am storing when the invite was sent, generate an invite token to make signing up easier and send an email to the invited user.

When the invite is accepted, I would also like to store the user id of the new user on the UserInvite object.

That is, a UserInvite belongs to both inviter and the invitee, and the latter is only being added to the object later on, not at creation, since I don’t know the id of the to-be-created User.

What is the right way to model this relationship?

I’m using Rails 7.