BaseEventTypeController::actionCreate PHP Method

    public function actionCreate()
    {
        if (!empty($_POST)) {
            // form has been submitted
            if (isset($_POST['cancel'])) {
                $this->redirectToPatientEpisodes();
            }
            // set and validate
            $errors = $this->setAndValidateElementsFromData($_POST);
            // creation
            if (empty($errors)) {
                $transaction = Yii::app()->db->beginTransaction();
                try {
                    $success = $this->saveEvent($_POST);
                    if ($success) {
                        //TODO: should this be in the save event as pass through?
                        if ($this->eventIssueCreate) {
                            $this->event->addIssue($this->eventIssueCreate);
                        }
                        //TODO: should not be passing event?
                        $this->afterCreateElements($this->event);
                        $this->logActivity('created event.');
                        $this->event->audit('event', 'create');
                        Yii::app()->user->setFlash('success', "{$this->event_type->name} created.");
                        $transaction->commit();
                        $this->redirect(array($this->successUri . $this->event->id));
                    } else {
                        throw new Exception('could not save event');
                    }
                } catch (Exception $e) {
                    $transaction->rollback();
                    throw $e;
                }
            }
        } else {
            $this->setOpenElementsFromCurrentEvent('create');
        }
        $this->editable = false;
        $this->event_tabs = array(array('label' => 'Create', 'active' => true));
        $cancel_url = $this->episode ? '/patient/episode/' . $this->episode->id : '/patient/episodes/' . $this->patient->id;
        $this->event_actions = array(EventAction::link('Cancel', Yii::app()->createUrl($cancel_url), array('level' => 'cancel')));
        $this->render('create', array('errors' => @$errors));
    }

 /**
  * Create Form with check for the cvi existing events count
  * @throws \Exception
  */
 public function actionCreate()
 {
     $create_new_cvi = $this->request->getParam('createnewcvi', null);
     if ($create_new_cvi !== null) {
         $cancel_url = $this->episode ? '/patient/episode/' . $this->episode->id : '/patient/episodes/' . $this->patient->id;
         if ($create_new_cvi == 1) {
             if (!$this->getManager()->canCreateEventForPatient($this->patient)) {
                 $this->getApp()->user->setFlash('warning.cvi_create', 'You cannot create another CVI whilst one exists that has not been issued.');
                 $this->redirect(array($cancel_url));
             } else {
                 parent::actionCreate();
             }
         } else {
             $this->redirect(array($cancel_url));
         }
     } else {
         $cvi_events = $this->getApp()->moduleAPI->get('OphCoCvi');
         $current_cvis = $cvi_events->getEvents($this->patient);
         if (count($current_cvis) >= $this->cvi_limit) {
             $this->render('select_event', array('current_cvis' => $current_cvis, 'can_create' => $this->getManager()->canCreateEventForPatient($this->patient)), false);
         } else {
             parent::actionCreate();
         }
     }
 }