public function filterNodes($data = array())
{
$conditions = array();
if (!empty($data['filter'])) {
$filter = '%' . $data['filter'] . '%';
$conditions = array('OR' => array($this->alias . '.title LIKE' => $filter, $this->alias . '.excerpt LIKE' => $filter, $this->alias . '.body LIKE' => $filter, $this->alias . '.terms LIKE' => $filter));
}
return $conditions;
}