i have a user model with fields name and sex. And each user can have an
one-to-one association called "father" with a male user.
So in user model i added a field father_id and added association like
this,
class User < ActiveRecord::Base
belongs_to :father, :class_name => 'User', :inverse_of => :user,
:foreign_key => "father_id"
has_one :user, :class_name => 'User', :inverse_of => :father
SEX=["male", "female"]
validates :sex, :presence => true,:inclusion => { :in => SEX }
end
now it can make both female user and male user as father. How could i
restrict it to make user as father only whose sex is male?
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