STI, and Subject Type

[codezomb]

I've got an Asset model, extending this model are Photo, and Plan. When I run fires :on => :create, the subject should be of either type Photo, or Plan. However, it's setting it's type to Asset. Is there a way around this?

photo.rb

class Photo < Asset

  # Timeline Events
  fires :new_asset, :on => :create,
    :actor => :actor,
    :secondary_subject => :project

end

plan.rb

class Plan < Asset

  # Timeline Events
  fires :new_asset, :on => :create,
    :actor => :actor,
    :secondary_subject => :project

end

asset.rb

class Asset < ActiveRecord::Base

end

Record of Asset, you can see the type here is Photo:

+------+----------------------------------------------+------------+--------------------------+-----------+-------+-------------------------+-------------------------+
| id   | source                                       | project_id | content_type             | file_size | type  | created_at              | updated_at              |
+------+----------------------------------------------+------------+--------------------------+-----------+-------+-------------------------+-------------------------+
| 1140 | /uploads/photo/source/1140/around_ennis5.jpg | 1          | application/octet-stream | 2150343   | Photo | 2011-09-22 17:23:22 UTC | 2011-09-22 17:23:22 UTC |
+------+------------+--------------+------------+------------------------+------------+----------+----------------------+-------------------------+-------------------------+

Record of TimelineEvent. You see the type here is Asset. They're mismatched:

+------+------------+--------------+------------+------------------------+------------+----------+----------------------+-------------------------+-------------------------+
| id   | event_type | subject_type | actor_type | secondary_subject_type | subject_id | actor_id | secondary_subject_id | created_at              | updated_at              |
+------+----------------------------------------------+------------+--------------+-----------+-------+-------------------------+-------------------------+
| 1128 | new_asset  | Asset        | User       | Project                | 1140       | 1        | 1                    | 2011-09-22 17:23:22 UTC | 2011-09-22 17:23:22 UTC |
+------+----------------------------------------------+------------+--------------+-----------+-------+-------------------------+-------------------------+

[xurde]

Same issue going on here.
Found any solution for STI?

Cheers.