/**
* Get distinct topic list
*
* @return \Acme\ModelBundle\Model\QueryBuilderHelperAbstract
*/
private function findTopics()
{
$em = $this->get('doctrine.orm.entity_manager');
$wrapper = new InterviewGetterWrapper(new InterviewGetter($em));
$wrapper->setInput(array('fields' => 'DISTINCT( ir.topic) AS idTopic, t.id, t.name, t.slug'));
$wrapper->setupQueryBuilder();
return $wrapper->getRecords();
}
