song shit

app/models/album.rb

@@ -1,4 +1,5 @@
 class Album < ActiveRecord::Base
   validates_presence_of :name
   belongs_to :artist
+  has_many :songs
 end

app/models/artist.rb

@@ -1,4 +1,5 @@
 class Artist < ActiveRecord::Base
   validates_presence_of :name
   has_many :albums
+  has_many :songs
 end

app/models/song.rb

@@ -0,0 +1,5 @@
+class Song < ActiveRecord::Base
+  validates_presence_of :name, :path
+  belongs_to :artist
+  belongs_to :album
+end

db/migrate/20100104185127_create_songs.rb

@@ -0,0 +1,16 @@
+class CreateSongs < ActiveRecord::Migration
+  def self.up
+    create_table :songs do |t|
+      t.integer :artist_id
+      t.integer :album_id
+      t.string :name
+      t.string :path
+
+      t.timestamps
+    end
+  end
+
+  def self.down
+    drop_table :songs
+  end
+end

db/schema.rb

@@ -9,7 +9,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20100104182024) do
+ActiveRecord::Schema.define(:version => 20100104185127) do
 
   create_table "albums", :force => true do |t|
     t.integer  "artist_id"
@@ -26,11 +26,10 @@
   end
 
   create_table "songs", :force => true do |t|
-    t.string   "artist"
-    t.string   "title"
-    t.string   "album"
-    t.string   "genre"
-    t.string   "path",       :null => false
+    t.integer  "artist_id"
+    t.integer  "album_id"
+    t.string   "name"
+    t.string   "path"
     t.datetime "created_at"
     t.datetime "updated_at"
   end

spec/factories.rb

@@ -8,9 +8,8 @@
 end
 
 Factory.define(:song) do |s|
-  s.sequence(:title)  { |i| "Title #{i}"  }
-  s.sequence(:artist) { |i| "Artist #{i}" }
-  s.sequence(:album)  { |i| "Album #{i}"  }
-  s.sequence(:genre)  { |i| "Genre #{i}"  }
+  s.artist { |song| song.association(:artist) }
+  s.album  { |song| song.association(:album)  }
+  s.sequence(:name) { |i| "Song #{i}" }
   s.sequence(:path)   { |i| create_song("test#{i}.mp3") }
 end

spec/fixtures/songs.yml

@@ -0,0 +1 @@
+# Factories.

spec/models/song_spec.rb

@@ -0,0 +1,17 @@
+require 'spec_helper'
+
+describe Song do
+
+  it 'requires a name' do
+    lambda do
+      Factory(:song, :name => nil)
+    end.should raise_error(ActiveRecord::RecordInvalid)
+  end
+
+  it 'requires a path' do
+    lambda do
+      Factory(:song, :path => nil)
+    end.should raise_error(ActiveRecord::RecordInvalid)
+  end
+
+end