ruby on rails - How to override default foreign key? -

i have has_many , belongs_to association between 2 models below:

class section < activerecord::base  self.primary_key = 'id'  has_many :rights end  class right < activerecord::base  self.primary_key = 'id'  belongs_to :section end 

the section table has id , section_id column well. above code associates right section via id column in section table. want associate through section_id column. how do that?

edit: on second read think misunderstood question, want relate field other primary key in section table? it's not common, hence misunderstanding.

you need use :primary_key => 'field_name' instead of :foreign_key

belongs_to :section, :primary_key => 'section_id'