Get two associations within a Factory to share another association

Question

I\'ve got these 5 models: Guardian, Student, Relationship, RelationshipType and School. Between them, I\'ve got these associations

class Guardian < ActiveReco         


        

Answer 1

Extending on nitsas' solution, you can abuse @overrides to check whether the guardian or student association have been overridden, and use the school association from the guardian/student. This allows you to override not only the school, but also just the guardian or just the student.

Unfortunately, this relies on instance variables, not public API. Future updates could very well break your factories.

factory :relationship do
  guardian { create(:guardian, school: school) }
  student  { create(:student,  school: school) }

  transient do
    school do
      if @overrides.key?(:guardian)
        guardian.school
      elsif @overrides.key?(:student)
        student.school
      else
        create(:school)
      end
    end
  end
end