Localization plugin function in viewer issue

Hello, dudes:
    My app utilises "Localization" plugin, and in the view, I added a
link as follow:
<%= link_to _ 'Sign up', :controller => 'account', :action => 'signup'
%>

    _ 'Sign up' , this part, it does translate the words "sign up"
into what I want, but the link function works incorrectly, if I check
the source, it is "<a href="/tasks">注册</a> ", it should be like <a
href="/account/signup">注册</a>, seems like the options "controller" &
"action" didnt works in link_to ??

    Anybody knows what to do?

Thanks!
Myst

Hi, I solved this , using _('Sign up'), rather than _ 'Sign up'