Rails - Jan 2010 - Problems with :onchange for radio_button_tag

Greetings,

I''ve been hitting my head to the wall over this for quite a while now
and don''t seem to be able to wrap my forementioned head around it.
Basically I have a list of users in a selection box and I have two radio
buttons: Sort by first name and sort by last name. This is what I have
in my view:

<%= radio_button_tag ''sort_by_last_name'',
''true'', :checked => true,
        :onchange => ''#{remote_function(:url  => {:action =>
"update_users"},
        :with => "order=1")}'' %> Sort by Last
name<br />
<%= radio_button_tag ''sort_by_last_name'',
''false'',
        :onchange => ''#{remote_function(:url  => {:action =>
"update_users"},
        :with => "order=0")}'' %> Sort by First name

<div id="users"><%= render :partial =>
''users'', :object => @users
%></div>

This is my partial view:
<%= collection_select(nil, :user_id, users, :id, :first_name,
                     {:prompt   => "Select user"}) %>

And this is my controller function for update_users:

 def update_users
   if params[:order] == 1
     users = User.all
   else
     users = User.first
   end

   render :update do |page|
     page.replace_html ''users'', :partial =>
''users'', :object => users
   end
 end

Now I''ve found a few sources describing on how this should be done, but
I haven''t been able to get them to work for some unknown reason.
-- 
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