planet.rb in dm-serializer-0.9.8

- old
+ new

@@ -2,10 +2,15 @@
   include DataMapper::Resource
 
   property :name, String, :key => true
   property :aphelion, Float
 
+  # Sorry these associations don't make any sense
+  # I just needed a many-to-many association to test against
+  has n, :friended_planets
+  has n, :friend_planets, :through => :friended_planets, :class_name => 'Planet'
+
   def category
     case self.name.downcase
     when "mercury", "venus", "earth", "mars" then "terrestrial"
     when "jupiter", "saturn", "uranus", "neptune" then "gas giants"
     when "pluto" then "dwarf planets"
@@ -13,6 +18,16 @@
   end
 
   def has_known_form_of_life?
     self.name.downcase == "earth"
   end
+end
+
+class FriendedPlanet
+  include DataMapper::Resource
+
+  property :planet_name,        String, :key => true
+  property :friend_planet_name, String, :key => true
+
+  belongs_to :planet, :child_key => [:planet_name]
+  belongs_to :friend_planet, :class_name => 'Planet', :child_key => [:friend_planet_name]
 end