Question

When saving a record with belongs to is it possible to ensure that the foreign key being saved in the child record actually exists in the parent table? (Assuming its not polymorphic).

I know there are plugins that can do this, but I’m wondering if ar has a means of handling this.

Thanks!

Answer 1

try validates_presence_of

class Model2 < ActiveRecord::Base
  belongs_to :model1

  validates_presence_of :model1
end