FactoryGirl: Populate a has many relation preserving build strategy
factory-bot, ruby-on-rails, testing
Solution
Here's a slightly cleaner version of Flipstone's answer:
factory :offering do
trait :stay do
...
photos do
association :hotel_photo, :strategy => @build_strategy.class
end
end
end
Problem
My problem seems very common, but I haven't found any answer in the documentation or the internet itself. It might seem a clone of this question has_many while respecting build strategy in factory_girl but 2,5 years after that post factory_girl changed a lot. I have a model with a has_many relation called photos. I want to populate this has many relation preserving my choice of build strategy. If I call `offering = FactoryGirl.build_stubbed :offering, :stay` I expect `offering.photos` to be a collection of stubbed models. The only way i've found to achieve this is this one: ``` factory :offering do association :partner, factory: :named_partner association :destination, factory: :geolocated_destination trait :stay do title "Hotel Gran Vía" description "Great hotel in a great zone with great views" offering_type 'stay' price 65 rooms 70 stars 4 event_spaces 3 photos do case @build_strategy when FactoryGirl::Strategy::Create then [FactoryGirl.create(:hotel_photo)] when FactoryGirl::Strategy::Build then [FactoryGirl.build(:hotel_photo)] when FactoryGirl::Strategy::Stub then [FactoryGirl.build_stubbed(:hotel_photo)] end end end end ``` No need to say that IT MUST EXIST a better way of do that. Ideas?