text: <?php
  /**
   * @file
   * Contains the basic 'node_revision' field handler.
   */
  
  class views_handler_field_node_revision extends views_handler_field_node {
    function init(&$view, $options) {
      parent::init($view, $options);
      if (!empty($this->options['link_to_node_revision'])) {
        $this->additional_fields['vid'] = 'vid';
        $this->additional_fields['nid'] = 'nid';
        if (module_exists('translation')) {
          $this->additional_fields['language'] = array('table' => 'node', 'field' => 'language');
        }
      }
    }
    function option_definition() {
      $options = parent::option_definition();
      $options['link_to_node_revision'] = array('default' => FALSE);
      return $options;
    }
  
    /**
     * Provide link to revision option.
     */
    function options_form(&$form, &$form_state) {
      parent::options_form($form, $form_state);
      $form['link_to_node_revision'] = array(
        '#title' => t('Link this field to its node revision'),
        '#description' => t('This will override any other link you have set.'),
        '#type' => 'checkbox',
        '#default_value' => !empty($this->options['link_to_node_revision']),
      );
    }
  
    /**
     * Render whatever the data is as a link to the node.
     *
     * Data should be made XSS safe prior to calling this function.
     */
    function render_link($data, $values) {
      if (!empty($this->options['link_to_node_revision']) && $data !== NULL && $data !== '') {
        $this->options['alter']['make_link'] = TRUE;
        $this->options['alter']['path'] = "node/" . $values->{$this->aliases['nid']} . '/revisions/' . $values->{$this->aliases['vid']} .'/view';
        if (isset($this->aliases['language'])) {
          $languages = language_list();
          if (isset($languages[$values->{$this->aliases['language']}])) {
            $this->options['alter']['language'] = $languages[$values->{$this->aliases['language']}];
          }
        }
      }
      else {
        return parent::render_link($data, $values);
      }
      return $data;
    }
  }
  
  