protected function getComorbidities($criteria) { $comorbiditiesElement = \OEModule\OphCiExamination\models\Element_OphCiExamination_Comorbidities::model()->with(array('event'))->find($criteria); $comorbidities = array(); if (isset($comorbiditiesElement->items)) { foreach ($comorbiditiesElement->items as $comorbiditity) { $comorbidities[] = $comorbiditity['name']; } return implode(',', $comorbidities); } }