rails relationship one-to-many; can't build child objects?

Question

class Photo < ActiveRecord::Base
    has_many :boosts, class_name: BoostedPhoto
    ...
end

class BoostedPhoto < ActiveRecord::Base
    belongs_to :photo
end

This is how I have it set up so far, but when i try to do this in the console:

photo = Photo.first
photo.boosts.create(title: 'testing')

I get the following results

(0.3ms)  begin transaction
(0.1ms)  rollback transaction
ActiveRecord::UnknownAttributeError: unknown attribute: photo_id

Been looking up how to do relationships for a few hours, and I think I might be overlooking something really simple...sorry for the newb question, but I'm starting to pull my hair out from frustration!

Answer 1

There should be a foreign key column in the boosted_photos table. General rule is the we put belongs_to association in the table model which have the foreign key, here it is BoostedPhoto

After that following should work,

photo = Photo.first
photo.boosts.create(title: 'testing')