Rails - Apr 2009 - Single table inheritance and find(:all) in parent

I understand how STI works, in that I have say a Post model that
contains posts on a forum and several sub-posts like
''ordinaryUserPost'' and ''adminUserPost'' etc.

Now, I want to define the same method in each of the sub-posts, but
the method would do something different in each case, eg

class Post < ActiveRecord::Base
end

class AdminUserPost < Post
  def background_color
    ''rockstar red''
  end
end

class ordinaryUserPost < Post
  def background_color
    ''pale blue''
  end
end

(yes its a silly example).  Now in my thread controller I do Post.find
(:all) and it gives me a list of posts I need to render, but they are
''Post'' objects, not AdminUserPost or OrdinaryUserPost - so I
cannot
just get my background_color method!  I would have to do a find on
each type of user post separately ...

Is there anyway I can do:

Post.find(:all)

And in the resultant array get a list of AdminUserPost and
OrdinaryUserPost objects instead of Post objects?

Thanks,

Stephen.
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On Apr 8, 8:37 pm, "stephen O''D"
<stephen.odonn...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> Is there anyway I can do:
>
> Post.find(:all)
>
> And in the resultant array get a list of AdminUserPost and
> OrdinaryUserPost objects instead of Post objects?
>
That''s the way it should work out of the box. Would be interesting to
see the data / code that results in this not happening.

Fred
> Thanks,
>
> Stephen.
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>
> That''s the way it should work out of the box. Would be interesting
to
> see the data / code that results in this not happening.
I was being stupid - put my type column was actually called post_type,
and I added self.inheritance_column = ''''post_type'' in
all the child
classes, but forgot the parent!
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