link from table row to new view generating :format => id of clicked row Why? Rails

I am following the example of SO # 9945620, Making a table row into a link in Rails The params being sent to the controller are {"controller"=>"cpe_events", "action"=>"cpe_course_description_live", "format"=>"15"} I assume the format is automatically being generated by rails. I don't, however, understand why it's adopting the row / record's id and why the cpe_events params or id aren't being passed. Full code below the following notes.

Here's the data-link that's throwing the error: <tr data-link="<%= cpe_course_description_live_path(cpe_event) %>" > That format is used in the referenced example. The link in the network section of my console reads cpe_course_description_live_path.15 However, the controller, @cpe_event = CpeEvent.find(params[:id]), can't read the id

If I change it to: <tr data-link="<%= cpe_course_description_live_path(cpe_event, :format => 'html') %>" > it correctly sends the format. The params are now {"controller"=>"cpe_events", "action"=>"cpe_course_description_live", "format"=>"html"} and the network section of the console reads cpe_course_description_live_path.html

Bottom-line: Not passing the params or id to the controller.

Here's the view / table code:

<% @cpe_events.each do |cpe_event| %>
    <tr data-link="<%= cpe_course_description_live_path(cpe_event, :format => 'html') %>" >
       <td><%= cpe_event.id %></td>
       .....

Here's the jQuery:

$(document).ready(function() {
  $("tr").click(function() {
   window.location = $(this).data("link");    
  })
})

Here's the controller:

def cpe_course_description_live
  @cpe_event = CpeEvent.find(params[:id])
  @user = current_user
  redirect_to cpe_course_description_live_path(cpe_event)
end

Any help pointing me in the right direction would be appreciated. Thanks