Sharing something I recently needed to do.

I wanted to add a new column to the default Drupal's Taxonomy term listing page that provides a link to a DraggableViews (receives term ID from contextual filter) for sorting nodes.

This guide will show you briefly on how to make use of hook_theme().

See screenshot below for the final result.

In your custom module, add the following code:

/**<br> * Implements hook_form_FORM_ID_alter().<br> */<br>function YOUR_MODULE_form_taxonomy_overview_terms_alter(&amp;$form, &amp;$form_state, $form_id) {<br>&nbsp; // Add custom theme wrapper.<br>&nbsp; array_unshift($form['#theme'], 'YOUR_MODULE_taxonomy_overview_terms');<br>}<p>/**<br> * Implements hook_theme().<br> */<br>function YOUR_MODULE_theme() {<br>&nbsp; return array(<br>&nbsp;&nbsp;&nbsp; 'YOUR_MODULE_taxonomy_overview_terms' =&gt; array(<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 'render element' =&gt; 'form',<br>&nbsp;&nbsp;&nbsp; ),<br>&nbsp; );<br>}</p><p>function theme_YOUR_MODULE_taxonomy_overview_terms($vars) {<br>&nbsp; ...<br>&nbsp; // Codes from theme_taxonomy_overview_terms()<br>&nbsp; <br>&nbsp; foreach (element_children($form) as $key) {<br>&nbsp;&nbsp;&nbsp; if (isset($form[$key]['#term'])) {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; $term = &amp;$form[$key];</p><p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; $row = array();<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; $row[] = (isset($term['#term']['depth']) &amp;&amp; $term['#term']['depth'] &gt; 0 ? theme('indentation', array('size' =&gt; $term['#term']['depth'])) : '') . drupal_render($term['view']);<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if ($form['#parent_fields']) {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; $term['tid']['#attributes']['class'] = array('term-id');<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; $term['parent']['#attributes']['class'] = array('term-parent');<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; $term['depth']['#attributes']['class'] = array('term-depth');<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; $row[0] .= drupal_render($term['parent']) . drupal_render($term['tid']) . drupal_render($term['depth']);<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; $term['weight']['#attributes']['class'] = array('term-weight');<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; $row[] = drupal_render($term['weight']);<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; $row[] = drupal_render($term['edit']);<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; $row[] = (isset($term['#term']['tid'])) ? l(t('sort'), 'blablabla/' . $term['#term']['tid']) : '';<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; $row = array('data' =&gt; $row);<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; $rows[$key] = $row;<br>&nbsp;&nbsp;&nbsp; }<br>&nbsp; }</p><p>&nbsp; ...<br>}</p>

Hope this short and simple snippet helps someone out there :)

Tags: drupaldrupal 7taxonomythemetermsvocabularyhookdraggableviews