proxies

Click Proxy

    <% if to_do.done? %>
      <%= ajax_link '', undo_to_do_path(to_do), {id: dom_id(to_do, :undo_link)} %>
      <input type="checkbox" <%= click_proxy(dom_target(to_do, :undo_link)) %> checked="checked">
    <% else %>
      <%= ajax_link '', complete_manage_to_do_path(to_do), {id: dom_id(to_do, :undo_link)} %>
      <input type="checkbox" <%= click_proxy(dom_target(to_do, :undo_link)) %>>
    <% end %>
    <%= to_do.description %>

Assuming this partial is swappable via AJAX, then checking the box will click the AJAX link to either complete or undo a to_do item. This allows you to click a link by clicking any other element you choose.

^{n.b. this example uses Thin Man for AJAX behavior.}

Submit

<%= form_for payment do |f| %>
  <a <%= submit_proxy %>>Make Payment</a>
<% end %>

Clicking the Make Payment link will submit the form. This allows you to submit a form with any element, not just a button.