Association Examples

gistfile1.rb

# Assign the Artist to the Song
  artist = Artist.create()
  song = Song.create()
  song.artist = artist
  song.save
  artist.reload
  artist.songs

# Build the Song from the Artist
  artist = Artist.create()
  artist.songs.build
  artist.save

# Build the Artist from the Song
  song = Song.create()
  song.build_artist
  song.save
  
# Add the Song to the Artist
  artist = Artist.create()
  song = Song.create()
  artist.songs << song

  # artist.songs = [song]
  # artist.save

# Assigning Songs to a Mixtape
  # Directly through
    mixtape = Mixtape.create
    song = Song.create
    song.mixtapes << mixtape

    mixtape = Mixtape.create
    song = Song.create
    mixtape.songs << song
  
    mixtape = Mixtape.create
    song = mixtape.songs.build
    mixtape.save
  
    song = Song.create
    mixtape = song.mixtapes.build
    song.save
  
  # Via the MixtapeSong
    mixtape = Mixtape.create
    song = Song.create    
    mixtape.mixtape_songs.build(:song => song)
    mixtape.save
    
    mixtape = Mixtape.create
    song = Song.create
    song.mixtape_songs.build(:mixtape => mixtape)
    song.save