this gist includes javascript/coffee with ruby on rails form to bulk / individual checkbox selection

bulk_checkbox_selection.html.erb

<script type="text/javascript">


  // JAVASCRIPT
  window.bind_bulk_resources_checkbox_toggle = function() {
    return $('#bulk_toggle_checkbox').click(function() {
      if ($('#bulk_toggle_checkbox').is(':checked')) {
        $('#bulk_form input:checkbox').prop('checked', true);
        return $('#bulk_form input:checkbox').each(function() {
          return $(this).val($(this).parents('tr').find('.selected_ids').val());
        });
      } else {
        $('#bulk_form input:checkbox').prop('checked', false);
        return $('#bulk_form input:checkbox').each(function() {
          return $(this).val(0);
        });
      }
    });
  };

  window.bind_resource_checkboxes = function() {
    return $('body').on('click', '#bulk_form input:checkbox', function() {
      if ($(this).is(':checked')) {
        return $(this).val($(this).parents('tr').find('.selected_ids').val());
      } else {
        return $(this).val(0);
      }
    });
  };



  //  OR ALTERNATIVELY COFFEESCRIPT

  window.bind_bulk_resources_checkbox_toggle = ->
    $('#bulk_toggle_checkbox').click ->
      if $('#bulk_toggle_checkbox').is(':checked')
        $('#bulk_form input:checkbox').prop 'checked', true
        $('#bulk_form input:checkbox').each ->
          $(this).val $(this).parents('tr').find('.selected_ids').val()
      else
        $('#bulk_form input:checkbox').prop 'checked', false
        $('#bulk_form input:checkbox').each ->
          $(this).val 0

  window.bind_resource_checkboxes = ->
    $('body').on 'click', '#bulk_form input:checkbox', ->
      if $(this).is(':checked')
        $(this).val $(this).parents('tr').find('.selected_ids').val()
      else
        $(this).val 0

</script>


<!-- RAILS FORM -->

<%= form_tag(path), {id: 'bulk_form'}) do %>
  <%= submit_tag 'Bulk Update' %>
  <table>
    <thead>
      <tr>
        <th><%= check_box_tag 'bulk_tag', 'yes', false, id: 'bulk_toggle_checkbox' %></th>
      </tr>
    </thead>
    <tbody>
      <% @resources.each do |resource| %>
        <td>
          <!-- ONLY SELECTED RESOURCE IDS -->
          <%= check_box_tag 'selected_resources_ids[]', '0' %>
          <!-- ALL RESOURCE IDS -->
          <%= hidden_field_tag 'resources_ids[]', resource.id, class: 'selected_ids' %>
        </td>
      <% end %>
    </tbody>
  </table>
<% end %>