/**
  * Save membership
  */
 public function save()
 {
     $empNumber = $this->getValue('empNumber');
     $membership = $this->getValue('membership');
     $employeeService = new EmployeeService();
     $membershipDetails = $employeeService->getMembershipDetail($empNumber, $membership);
     $membershipDetail = $membershipDetails[0];
     if ($membershipDetail->getEmpNumber() == null) {
         $membershipDetail = new EmployeeMemberDetail();
         $membershipDetail->empNumber = $empNumber;
         $membershipDetail->membershipCode = $membership;
     }
     $membershipDetail->subscriptionPaidBy = $this->getValue('subscriptionPaidBy');
     $membershipDetail->subscriptionAmount = $this->getValue('subscriptionAmount');
     $membershipDetail->subscriptionCurrency = $this->getValue('currency');
     $membershipDetail->subscriptionCommenceDate = $this->getValue('subscriptionCommenceDate');
     $membershipDetail->subscriptionRenewalDate = $this->getValue('subscriptionRenewalDate');
     $membershipDetail->save();
 }