🤔 Situation
class Author
has_many :books
has_many :title_covers, through: :book
end
class Book
belongs_to :author
has_many :title_covers
end
class TitleCover
belongs_to :author
belongs_to :book
end
👍 Solution
preparing
FactoryBot.define do
factory :author, class: Author do
trait :with_a_book_and_title_covers do
after(:build) do |author|
author.books << FactoryBot.build(:book, :with_title_covers)
end
end
end
end
FactoryBot.define do
factory :book, class: Book do
trait :with_title_covers do
after(:build) do |book|
book.title_covers = FactoryBot.build_list(:title_cover, 2)
end
end
end
end
Note1: << for build, = for build_list to make the relations.
Note2: if you use after(:create), don't forget to .save.
🎉 Use it
You can easily make an array of author which has a book that has two book covers, and the author name is n350071.
let(:author){ create(:author, :with_a_book_and_title_covers, name: 'n350071') }
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