I've enabled threaded comments in the comment settings on my Drupal 7 site. Now, on every comment that has threaded comments beneath it, I'd like to add a link (in the same place as the reply/edit/delete links) that enables users to toggle the display of the threaded comments beneath it -- a show/hide replies link.

  • 1
    Do you want to show / hide all comments at once with one button or individual buttons for each comment? Most likely you can do this with some basic JQuery. Nov 9, 2012 at 15:58

1 Answer 1


You can do something like this:

In your theme's template.php file:

 * Override or insert variables into the comment wrapper templates.
 * @param $variables
 *   An array of variables to pass to the theme template.
 * @param $hook
 *   The name of the template being rendered ("comment" in this case.)
function THEMENAME_preprocess_comment_wrapper(&$variables, $hook) {
  // Add jQuery UI accordian to hide the comments in.
  // It is already added in preprocess node but it is safer to also have it here
  // and doens't add much overhead as drupal will only add it once.
  drupal_add_library('system', 'ui.accordion');
  // Add some custom js to collapse comments.
  drupal_add_js(path_to_theme() . '/js/collapsi-comments.js');

In collapsi-comments.js (in this case it is in a folder called "js" in your theme.

  Drupal.behaviors.collapsiComments = {
    attach: function(context, settings) {
        collapsible: true,
        autoHeight: false,
        active: false,
        header: 'h2.title.comment-form'

In your comment-wrapper.tpl.php in your theme wrap the comment form in a wrapper div like this (if your theme doesn't have one and you have a base theme that does, copy it from the base theme and modify it, otherwise copy from the comment module and modify it):

<?php if ($comment_form): ?>
  <div class="comment-form-wrapper accordion">
    <h2 class="title comment-form"><?php print t('Add new comment'); ?></h2>
    <?php print $comment_form; ?>
<?php endif; ?>

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