public function getSupervisorListAsJson()
{
$jsonArray = array();
$employeeService = new EmployeeService();
$employeeService->setEmployeeDao(new EmployeeDao());
$employeeList = $employeeService->getSupervisorList();
foreach ($employeeList as $employee) {
$name = $employee->getFirstName() . " " . $employee->getMiddleName();
$name = trim(trim($name) . " " . $employee->getLastName());
$jsonArray[] = array('name' => $name, 'id' => $employee->getEmpNumber());
}
$jsonString = json_encode($jsonArray);
return $jsonString;
}