/**
  * @return \Zend\Http\Response|ViewModel
  * @throws \Exception
  */
 public function requestAction()
 {
     $helper = new ReceivableHelper($this->receivableTable());
     $form = $helper->getForm($this->currencyCombo());
     $receivable = new Receivable();
     $generateNo = $this->receivableTable()->getVoucherNo(date('Y-m-d', time()));
     $receivable->setVoucherNo($generateNo);
     $receivable->setDepositBy($this->staffId);
     $form->bind($receivable);
     $request = $this->getRequest();
     if ($request->isPost()) {
         $form->setInputFilter($helper->getInputFilter());
         $post_data = $request->getPost()->toArray();
         $form->setData($post_data);
         if ($form->isValid()) {
             $this->receivableTable()->saveReceivable($receivable);
             $this->flashMessenger()->addInfoMessage('Requested voucher by ' . $generateNo . '.');
             return $this->redirect()->toRoute('account_receivable');
         }
     }
     return new ViewModel(array('form' => $form, 'staffName' => $this->staffName, 'accountTypes' => $this->accountTypes()));
 }