working cache

app/views/layouts/_users_checkbox_ary.html.erb

@@ -1,3 +1,5 @@
 <%= content_tag :div ,:id => "users_checkbox_ary",:class => 'clear' do %>
-  <%= render :partial => "shared/privilege_user",:collection =>@sys_users,:as=>:user  ,:locals =>{ :chosen_users=> @users_array }  %>
+  <% cache ["users_checkbox_ary"] do%>
+    <%= render :partial => "shared/privilege_user",:collection =>@sys_users,:as=>:user  ,:locals =>{ :chosen_users=> @users_array }  %>
+  <%end -%>
 <%end -%>