title: Rails checkbox_tag with ajax
body: <p>I'm trying to figure out how to pass data with ajax using a checkbox in Rails 3.2.11.  I have the following line in my view</p>
  
  <pre><code>&lt;%= check_box_tag(
          "institution_ids_#{inst.name.gsub(" ", "")}",
            inst.id,
            false,
          data: {
            remote: true,
            institution_id: inst.id}) %&gt;
  </code></pre>
  
  <p>When I change the status of the checkbox, I can see that the controller is correctly getting called (specifically the index method of the controller, which is what I want as that is the view I'm in), however, I cannot seem to access the institution_id variable from the params hash on the controller.  Can someone please explain how I use ajax to pass data from the view to the controller within a checkbox.  I thought the remote: true function would correctly call the controller (which is does) with the additional parameters that I set (which it doesn't).</p>