Question

I have a basic problem with a has_one and belongs_to association. I have two models: StudentRegistration and User that look like the following:

class StudentRegistration < ActiveRecord::Base
  belongs_to :user
end

and

class User < ActiveRecord::Base
  has_one student_registration
end

The idea is that a student gets registered and then later a User account can be created. My problem is that I’m storing the foreign key user_id in the student_registration table and I only know this once the user record has been created. When the user account gets created I need to update the student_registration table adding the new user id.

Is it the case that I just have this the wrong way around or should Rails handle this automatically?

Answer 1

You have setup your associations the correct way, but I guess the implementation is wrong.

No problems, just go through this link and you’d be good to go.

Nested-model-form-part-1 – Railscasts