no ideas why collection saving isn't working...

app/models/collection.rb

@@ -4,10 +4,8 @@ class Collection
   key :name, String
 
   belongs_to :person, :class_name => 'Person'
+  many :photos, :class_name => 'Photo', :foreign_key => :collection_id
 
   validates_presence_of :name
 
-  #many :posts, :class_name => 'Post', :foreign_key => :collection_id
-
-
 end

app/models/photo.rb

@@ -2,4 +2,8 @@ class Photo < Post
   require 'carrierwave/orm/mongomapper'
   include MongoMapper::Document
   mount_uploader :image, ImageUploader
+
+  key :collection_id, ObjectId
+
+  belongs_to :collection, :class_name => 'Collection'
 end

spec/models/collection_spec.rb

@@ -23,7 +23,22 @@ describe Collection do
   end
 
   it 'should contain photos' do
+    collection = Collection.create(:name => "test collection")
 
+
+    photo = Photo.create(:person => @user)
+
+    puts photo.valid?
+    puts collection.valid?
+
+    puts photo.inspect
+    puts collection.photos.inspect
+
+    puts 'asdojasd'
+    puts photo.collection
+    puts 'asdojasd'
+
+    collection.photos.count.should == 1
   end