Use create_list method many times in Rails FactoryBot

Question

I have two FactoryBots => user and post And post has user_id column

FactoryBot.define do
  factory :user do
    sequence(:name) { |n| "user#{n}" }
  end
end

FactoryBot.define do
  factory :post do
    sequence(:title) { |n| "title#{n}" }
    sequence(:user_id) { |n| n }
  end
end

I want to make 10 users, and 100 posts (10posts per each user) so i tried .times method like this =>

10.times do
  FactoryBot.define do
    factory :post do
      sequence(:title) { |n| "title#{n}" }
      sequence(:user_id) { |n| n }
    end
  end
end

This not worked because of Factory already registered error

  FactoryBot.define do
    10.times do
      factory :post do
        sequence(:title) { |n| "title#{n}" }
        sequence(:user_id) { |n| n }
      end
    end
  end

This not worked too.

FactoryBot.create_list(:user, 10)
10.times do
  FactoryBot.create_list(:post, 10)
end

This makes FactoryBot to make post num 11, user num 11 so foriegn key error occurs. How can i use create_list method many times?

Just i want to make is, 10 posts per 10 users.

Answer 1

If you don't need to reference any of those users and/or posts afterward, then you can just 10 times create 10 posts using the same user per every 10 posts;

10.times do
  create_list(:post, 10, user: create(:user))
end