diff --git a/lib/extended_tag.rb b/lib/extended_tag.rb
index 352b107..ed49637 100644
--- a/lib/extended_tag.rb
+++ b/lib/extended_tag.rb
@@ -1,4 +1,9 @@
 class Tag
+
+  attr_accessible :name, :parent_id, :pending
+
+  has_many :children, :class_name => 'Tag', :foreign_key => 'parent_id', :dependent => :destroy
+
   
   @@original_find = self.method(:find) 
   # Rename the find method to find_with_pendings that includes all tags in the search regardless if its pending or not 
diff --git a/test/unit/extended_tag_test.rb b/test/unit/extended_tag_test.rb
index 9faf42c..ccb78ed 100644
--- a/test/unit/extended_tag_test.rb
+++ b/test/unit/extended_tag_test.rb
@@ -19,15 +19,15 @@ class UserTest < ActiveSupport::TestCase
 
   def test_parent_candidates
     tag1 = Tag.create(:name => 'parent_tag')
-    tag2 = Tag.create(:name => 'child_tag', :parent => tag1)
+    tag2 = Tag.create(:name => 'child_tag', :parent_id => tag1.id)
     assert ( not tag1.parent_candidates.include?(tag2) )
     assert tag2.parent_candidates.include?(tag1)
   end
 
   def test_descendents
     tag1 = Tag.create(:name => 'parent_tag')
-    tag2 = Tag.create(:name => 'child_tag', :parent => tag1)
-    tag3 = Tag.create(:name => 'grand_tag', :parent => tag2)
+    tag2 = Tag.create(:name => 'child_tag', :parent_id => tag1.id)
+    tag3 = Tag.create(:name => 'grand_tag', :parent_id => tag2.id)
     assert (not tag2.descendents.include?(tag1))
     assert (not tag1.descendents.include?(tag1))
     assert tag1.descendents.include?(tag2)
--
libgit2 0.21.2