Ruby On Rails in UA/Rails plugins и фичи/Plugin - Acts As Taggable On Steroids/RE: RE: Plugin - Acts As Taggable On Steroids

можно я немного испорчу страничку...

получаю ошибку: undefined method `tag_with' for #
код:
new.rhtml

Теги:



news_controller.rb
def new
@user = User.find(:all)
@priorities = Priority.find(:all)
redirect_to :action => 'list' if session[:user].blank?
@news = News.new
end

def create
@user = User.find(:all)
@priorities = Priority.find(:all)
@news = News.new(params[:news])
@news.tag_with(params[:tag_list])
if @news.save
redirect_to :action => 'list'
else
render :action => 'new'
end
end

news.rb
acts_as_taggable

что я сделал не так?