In Rails 2, I used this kind of code to get a certain part

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Asked: May 18, 20262026-05-18T04:48:35+00:00 2026-05-18T04:48:35+00:00

In Rails 2, I used this kind of code to get a certain part

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In Rails 2, I used this kind of code to get a certain part of the page to update.

<div id="sidebar_div" class="span-3">
  <ul class="sidebar_list">
    <% for page in @section.pages %>
    <li><%= link_to_remote "#{page.name}", :update=>'show_page', :url => { :controller=>'pages',:action=>'show_page', :id=>page.id }, :html=>{} %></li>
    <hr/>
    <% end %>
  </ul>
</div>

<div id='show_page' class='span-18 last vert_divider'>
  <%= render :partial => 'pages/show', :locals => { :page=>@page } %>
</div>

In the controller pages, I had a show_page method that just rendered the partial again.

In Rails 3, I DON’T KNOW HOW TO ACCOMPLISH THIS. I want to use jQuery, which I already know how to code, but I don’t know how to get it working in this way. Should I create a js.erb file in my view? I watched the http://railscasts.com/episodes/205-unobtrusive-javascript but I still don’t know how to get it working to update one part of the page! Basically, I have this sidebar with links on it, and each time a user a clicks on one of them, the central part of the page should update – AJAX! How do I do this? Do I still need this show_page method in the controller?