<div id="rename">
  <%= render :template => 'persons/rename'%>
</div>

<%= link_to 'Rename', {:controller => 'persons', :action => 'rename', :per_name => person.name}, :class => 'rename', :remote => true %>

-> <%= params[:per_name]%> #here I am trying to print the name from the link

$('a.rename').click(function(){
    $('div#rename').css('display', 'block');
 });

resources :persons do
    collection do
      match 'rename/:person_name' => 'persons#rename'
    end
  end