Cleaned up the class_eval stuff in the new mixins a bit

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@87 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activerecord/lib/active_record/mixins/list.rb

@@ -28,11 +28,9 @@ module Mixins
     #   todo_list.last.move_higher
     module List
       def self.append_features(base)
-        super
-        base.class_eval do
-          before_destroy :remove_from_list
-          after_create   :add_to_list_bottom
-        end
+        super        
+        base.before_destroy :remove_from_list
+        base.after_create   :add_to_list_bottom
       end
 
       # Moving around on the list

activerecord/lib/active_record/mixins/touch.rb

@@ -17,12 +17,13 @@ module Mixins
     module Touch
       def self.append_features(base)
         super
-        base.class_eval do
-          before_create :touch_on_create
-          before_update :touch_on_update
 
+        base.before_create :touch_on_create
+        base.before_update :touch_on_update
+
+        base.class_eval do
           def touch_on_create
-            self.created_at = self.updated_at = Time.now
+            self.updated_at = (self.created_at ||= Time.now)
           end
 
           def touch_on_update