Question

I am trying to create some test data to fill my tables with so that i can test functionality on my site.

The tables in question are: songs, song_arrangements, and song_arrangement_files. The are associated in this way.

Songs:
    has_many :song_arrangements, :dependent => :destroy
    has_many :song_arrangement_files, :through => :song_arrangements

Song Arrangements:
    belongs_to :song
    has_many :song_arrangement_files, :dependent => :destroy

Song Arrangement Files:
    belongs_to :song
    belongs_to :song_arrangement

I have been able to create 25 songs with FactoryGirl with this code:

Code in my spec file:
    before { FactoryGirl.create_list(:song, 25) }

Code in the factory:
    FactoryGirl.define do
        factory :song do |s|
            s.sequence(:title) { |n| "Song Title #{n}" }
            s.sequence(:artist) { |n| "Song Artist #{n}" }
        end
    end

Any thoughts on how to create song_arrangements and song_arrangement_files that are correctly assciated with their respective song_arrangement or song record?

I’m guessing i could use after(:create) nested in my factory somehow. I’m very new to FactoryGirl and still fairly new to Rails in general. Any help is much appreciated!

Answer 1

So my other answer helped me do what i needed to do; however, i was needing to basically go one level of associations deeper and i was hitting walls with that solution. I ended re-reading the FactoryGirl documentation for associations and came up with this solution that works in all my cases. It creates songs, song_arrangements, and song_arrangement_files. I’m sure the code isn’t pretty, but it works and can be improved upon later. Hope this helps anyone running into the same type of roadblocks.

FactoryGirl.define do
  factory :song do |s|
    s.sequence(:title) { |n| "Song Title #{n}" }
    s.sequence(:artist) { |n| "Song Artist #{n}" }

    factory :song_with_song_arrangements do
      ignore do
        song_arrangements_count 100
      end

      after(:create) do |song, evaluator|
        FactoryGirl.create_list(:song_arrangement, evaluator.song_arrangements_count, song: song)
      end
    end
  end

  factory :song_arrangement do |sa|
    song

    sa.sequence(:title) { |n| "Arrangement #{n}" }
    original_key 'A'
    bpm 75
    sa.sequence(:chart_content) { |n| "This is the chart content for Arrangement #{n}." }
    chart_mapping 'V1, C, V2, C, B, C, C'
    sa.sequence(:notes) { |n| "These are notes for the Arrangement #{n}." }

    factory :song_arrangement_with_song_arrangement_files do
      ignore do
        song_arrangement_files_count 100
      end

      after(:create) do |song_arrangement, evaluator|
        FactoryGirl.create_list(:song_arrangement_file, evaluator.song_arrangement_files_count, song_arrangement: song_arrangement)
      end
    end
  end

  factory :song_arrangement_file do |saf|
    song_arrangement
    song

    saf.sequence(:title) { |n| "Attachment #{n}" }
    url 'http://www.google.com'
    saf.sequence(:description) { |n| "This is the description of Attachment #{n}." }
  end
end

Code used to call these factories:

Songs:
    before(:each) { FactoryGirl.create_list(:song, 25) }
Song Arrangements:
    before(:each) { FactoryGirl.create(:song_with_song_arrangements) }
Song Arrangement Files:
    before(:each) { FactoryGirl.create(:song_arrangement_with_song_arrangement_files) }