user.rb

class User < ActiveRecord::Base
  attr_accessible :email, :name
  
  validates :email, :presence => true
  validates :name, :presence => true
  validates_uniqueness_of :email, :scope => :user
  
  
  has_many :song_entries
  has_many :songs, :through => :song_entries
  
  require 'open-uri' 
  
  def get_data(url)
    doc.xpath('//rss/channel/item').each do |node|
      song = {
        :track => node.xpath('mm:Track/dc:title').text.strip.downcase,
        :artist => node.xpath('mm:Artist/dc:title').text.strip.downcase,
        :artwork => node.xpath('albumArtUrl').text.strip
      }
      songs << song
      populate(song)
    end
  end
  
  def populate(song)
    s = Song.find_or_create_by_track_and_artist_and_artworkUrl( 
      :track      => song[:track],
      :artist     => song[:artist],
      :artworkUrl => song[:artwork]
    )
    song_entries.find_or_create_by_song_id(:song_id => s.id)
  end

end