rails-帮助设置模型-has_one -belongs_to

Question

I've quite a simple query regarding models.

I have a model -

class User < ActiveRecord::Base
  has_one :interest
end

And another -

class Interest < ActiveRecord::Base
  belongs_to :donor
end

My Interest table is prepolated with interests - "football", "swimming", "tennis" Each user can only have one interest, but an interest can have many users.

My set up at the moment seems to allow an interest to only have one user. What am I doing wrong?

Answer 1

Simply set has_many on Interest and belongs_to on User . Remember about Rails convention in naming things:

belongs_to :interest

..and...

has_many :users