How to user factory girl to create associated lists with a has_many with a validation that requires it on create

Question

In a Rails application, given three models User, Article and Reviewer with the following relationships and validations:

class User < ActiveRecord::Base
  has_         


        

Answer 1

I reposted this over on the Factory Girl github page as an issue and worked my way around to the answer:

before_create do |article|
  article.reviewers << FactoryGirl.build(:reviewer, article: article)
end

The key was doing it in a before_create, so the validations haven't fired yet, and making sure to push the newly created reviewer into the list of reviews on the instance being created. Thanks to Unixmonkey for responding and keeping me trying new things :)

https://github.com/thoughtbot/factory_girl/issues/369#issuecomment-5490908

Answer 2

The new syntax is:

before(:create) do |article|
  article.reviewers << FactoryGirl.build(:reviewer, article: article)
end

Answer 3

factory :article do
  reviewers {|a| [a.association(:reviewer)] }
end

or

factory :article do
  before_create do |a|
    FactoryGirl.create(:reviewer, article: a)
  end
end