Zend Framewok not populating all table field's value - zend-framework

Question

I'm beginner for Zend Framework and using Zend Framework 2.5 veresion. I'm getting same issue and can't be resolved.My Model.php is different than show above.
Model.php
namespace User;
use Zend\ModuleManager\Feature\AutoloaderProviderInterface;
use Zend\ModuleManager\Feature\ConfigProviderInterface;
class Module implements AutoloaderProviderInterface, ConfigProviderInterface{
public function getAutoloaderConfig(){
return array(
'Zend\Loader\StandardAutoloader' => array(
'namespaces' => array(
__NAMESPACE__ => __DIR__.'/src/'.__NAMESPACE__,
)
)
);
}
public function getConfig(){
return include __DIR__. '/config/module.config.php';
}
}
My 'tbl_user' has fields with '_' like 'first_name', 'last_name', 'contact_num' which are not listing. other without underscore '_' fields are listing.
What is wrong with me, can anyone help me?
My output is:
User\Model\User Object
(
[id:protected] => 4
[first_name:protected] =>
[last_name:protected] =>
[contact_num:protected] =>
[email:protected] => dev#email.com
[designation:protected] => C++Programmer
[text:protected] =>
[name:protected] =>
[profile_pic:protected] =>
)
here is my Model 'User.php'
<?php
namespace User\Model;
class User implements UserInterface{
protected $id;
protected $first_name;
protected $last_name;
protected $contact_num;
protected $email;
protected $designation;
protected $text;
protected $name;
protected $profile_pic;
public function getId(){
return $this->id;
}
public function setId($id){
$this->id = $id;
}
public function getName(){
return $this->name;
}
public function setName($first_name, $last_name){
$this->name = $first_name.' '.$last_name;
}
public function getContact(){
return $this->contact_num;
}
public function setContact($contact_num){
$this->contact_num = $contact_num;
}
public function getEmail(){
return $this->email;
}
public function setEmail($email){
$this->email = $email;
}
public function getDesignation(){
return $this->designation;
}
public function setDesignation($designation){
$this->designation = $designation;
}
public function getProfilePic(){
return $this->profile_pic;
}
public function setProfilePic($profile_pic){
$this->profile_pic = $profile_pic;
}
/*public function getText(){
return $this->text;
}
public function setText($text){
$this->text = $text;
}*/
}
?>
and this is my 'ZendDbSqlMapper.php'
<?php
namespace User\Mapper;
use User\Model\UserInterface;
use Zend\Db\Adapter\AdapterInterface;
use Zend\Db\Adapter\Driver\ResultInterface;
use Zend\Db\ResultSet\HydratingResultSet;
use Zend\Stdlib\Hydrator\HydratorInterface;
use Zend\Db\Sql\Sql;
use Zend\Db\Sql\Insert;
use Zend\Db\Sql\Update;
class ZendDbSqlMapper implements UserMapperInterface{
protected $dbAdapter;
protected $hydrator;
protected $userPrototype;
public function __construct(
AdapterInterface $dbAdapter,
HydratorInterface $hydrator,
UserInterface $userPrototype
){
$this->dbAdapter = $dbAdapter;
$this->hydrator = $hydrator;
$this->userPrototype = $userPrototype;
}
public function find($id){
$sql = new Sql($this->dbAdapter);
$select = $sql->select('tbl_users');
$select->where(array('id = ?' => $id));
$stmt = $sql->prepareStatementForSqlObject($select);
$result = $stmt->execute();
if($result instanceof ResultInterface && $result->isQueryResult() && $result->getAffectedRows()){
return $this->hydrator->hydrate($result->current(), $this->userPrototype);
}
throw new \InvalidArgumentException("User with given ID:{$id} not found");
}
public function findAll(){
$sql = new Sql($this->dbAdapter);
$select = $sql->select('tbl_users');
$stmt = $sql->prepareStatementForSqlObject($select);
$result = $stmt->execute();
//\Zend\Debug\Debug::dump($result); die;
if($result instanceof ResultInterface && $result->isQueryResult()){
//$resultSet = new ResultSet();
$resultSet = new HydratingResultSet($this->hydrator, $this->userPrototype);
//\Zend\Debug\Debug::dump($resultSet->initialize($result)); die;
return $resultSet->initialize($result);
}
return array();
}
public function save(UserInterface $userObject){
$userData = $this->hydrator->extract($userObject);
unset($userData['id']);
if($userObject->getId()){
$action = new Update('tbl_users');
$action->setData($userData);
$action->where(array('id = ?' => $userObject->getId()));
}else{
$action = new Insert('tbl_users');
$action->values($userData);
}
$sql = new Sql($this->dbAdapter);
$stmt = $sql->prepareStatementForSqlObject($action);
$result = $stmt->execute();
if($result instanceof ResultInterface){
if($newId = $result->getGeneratedValue()){
$userObject->setId($newId);
}
return $userObject;
}
return new \Exception("Database Error");
}
}
?>
here is 'ListController.php'
<?php
namespace User\Controller;
use User\Service\UserServiceInterface;
use Zend\Mvc\Controller\AbstractActionController;
use Zend\View\Model\ViewModel;
class ListController extends AbstractActionController{
protected $userService;
public function __construct(UserServiceInterface $userService){
$this->userService = $userService;
}
public function indexAction(){
return new ViewModel(array(
'users' => $this->userService->findAllUsers()
));
}
public function detailAction(){
$id = $this->params()->fromRoute('id');
try {
$user = $this->userService->findUser($id);
}catch(\InvalidArgumentException $ex){
return $this->redirect()->toRoute('user');
}
return new ViewModel(
array( 'user' =>$user )
);
}
}
?>
thank you.