always discard scope when looking up root & parent

lib/ancestry/instance_methods.rb

@@ -103,15 +103,15 @@ def parent= parent
     end
 
     def parent_id= parent_id
-      self.parent = if parent_id.blank? then nil else self.base_class.find(parent_id) end
+      self.parent = if parent_id.blank? then nil else unscoped_find(parent_id) end
     end
 
     def parent_id
       if ancestor_ids.empty? then nil else ancestor_ids.last end
     end
 
     def parent
-      if parent_id.blank? then nil else self.base_class.find(parent_id) end
+      if parent_id.blank? then nil else unscoped_find(parent_id) end
     end
 
     # Root
@@ -120,7 +120,7 @@ def root_id
     end
 
     def root
-      if root_id == id then self else self.base_class.find(root_id) end
+      if root_id == id then self else unscoped_find(root_id) end
     end
 
     def is_root?
@@ -221,7 +221,7 @@ def primary_key_type
     end
 
     def unscoped_descendants
-      self.base_class.unscoped do 
+      self.base_class.unscoped do
         self.base_class.all(:conditions => descendant_conditions) 
       end
     end
@@ -231,5 +231,9 @@ def unscoped_descendants
     def sane_ancestry?
       ancestry.nil? || (ancestry.to_s =~ Ancestry::ANCESTRY_PATTERN && !ancestor_ids.include?(self.id))
     end
+
+    def unscoped_find id
+      self.base_class.unscoped { self.base_class.find(id) }
+    end
   end
 end

test/has_ancestry_test.rb

@@ -53,13 +53,17 @@ def test_setting_invalid_orphan_strategy
 
   def test_scoping_in_callbacks
     AncestryTestDatabase.with_model do |model|
+      $random_object = model.create
+
       model.instance_eval do
         after_create :after_create_callback
       end
       model.class_eval do
         def after_create_callback
           # We don't want to be in the #children scope here when creating the child
           self.parent
+          self.parent_id = $random_object.id if $random_object
+          self.root
         end
       end