Caches_action and render_component

I’ve made some test:
------------------ CODE ------------------
class FooController < ActionController::Base
caches_action :foo
def foo
render_text ‘Hello, foo

end
end

class BarController < ActionController::Base
def bar
render :inline => <<-EOS
Hello, bar

<%= render_component(:controller => ‘foo’, :action => ‘foo’, :id
=> params[:id]) %>
EOS
end
end

class FooBarController < ActionController::Base
def foo_bar
render :inline => <<-EOS
Hello, bar

<%= render_component(:controller => ‘foo’, :action => ‘foo’, :id
=> params[:id]) %>
EOS
end
end
----------------- END CODE ---------------
When I access /foo/foo, I think that it should create a file
‘/tmp/cache/localhost.3000/foo/foo.cache’. and it does.
When I access /foo/foo/1, it’s created a file
‘/tmp/cache/localhost.3000/foo/foo/1.cache’, it’s right.

When I access /bar/bar, I think that it should create a file
‘/tmp/cache/localhost.3000/foo/foo.cache’, but it’s created the file
‘/tmp/cache/localhost.3000/bar/bar.cache’. And I access
/foo_bar/foo_bar, it’s created the file
‘/tmp/cache/localhost.3000/foo_bar/foo_bar.cache’. Two files are the
same content.