Overrides RevisionLink::render_link
function render_link($data, $values) {
list($node, $vid) = $this
->get_revision_entity($values, 'delete');
if (!isset($vid)) {
return;
}
// Current revision cannot be deleted.
if ($node->vid == $vid) {
return;
}
$this->options['alter']['make_link'] = TRUE;
$this->options['alter']['path'] = 'node/' . $node->nid . "/revisions/{$vid}/delete";
$this->options['alter']['query'] = drupal_get_destination();
return !empty($this->options['text']) ? $this->options['text'] : t('delete');
}