rails3 rails.js and jquery catching success and failure of ajax requests

Question

Previously, in rails 2.3.8 i used the prototype-helpers link_to_remote and form_remote_for (amongst others).

These had the option :u

Answer 1

The related rails 4 guide can be found at: http://guides.rubyonrails.org/working_with_javascript_in_rails.html

It points to the documentation of the events at: https://github.com/rails/jquery-ujs/wiki/ajax , as mentioned by ncherro

The actual values passed to the callbacks can be inferred from jQuery's ajax method http://api.jquery.com/jquery.ajax/#jQuery-ajax-settings

.bind is deprecated in favor of .on by jQuery: http://api.jquery.com/on/

So now the recommended approach is:

Template:

<%= link_to 'Click me!',
    'path/to/ajax',
    remote: true,
    id: 'button',
    method: :get,
    data: {type: 'text'}
%>

CoffeScript:

$(document).ready ->
  $("#button").on("ajax:success", (e, data, status, xhr) ->
    alert xhr.responseText
  ).on "ajax:error", (e, xhr, status, error) ->
    alert "error"