how to use helper function in form in zf2 - php

Question

I want to populate the select box in the zend form using helper funtion.
following are the helper and form code.
myhelper.php
namespace myspace\View\Helper;
use Zend\View\Helper\AbstractHelper,
Zend\ServiceManager\ServiceLocatorInterface as ServiceLocator;
use Zend\Db\ResultSet\ResultSet;
class MyHelper extends AbstractHelper {
protected $serviceLocator;
protected $dbAdapter;
protected $resultData;
public function __construct(ServiceLocator $serviceLocator) {
$this->serviceLocator = $serviceLocator;
}
public function getMyList() {
return $states = array(
'a' => 'a',
'b' => 'b',
'c' => 'c', );
}
public function getServiceLocator() {
return $this->serviceLocator;
}
}
My form code
Myform.php
namespace myspace\Form;
use Zend\Form\Form;
use Zend\Db\Adapter\AdapterInterface;
use Zend\Form\Element;
use masterinfo\View\Helper\MasterHelper;
use Zend\ServiceManager\ServiceLocatorAwareInterface;
use Zend\ServiceManager\ServiceLocatorInterface;
class UserForm extends Form implements ServiceLocatorAwareInterface {
protected $dbAdapter;
protected $serviceLocator;
public function __construct($args) {
parent::__construct('user');
$dbAdapter = $args['dbAdapter'];
$this->setDbAdapter($dbAdapter);
$this->setAttribute('method', 'post');
$this->setAttribute('class', 'form-horizontal');
$this->setAttribute('role', 'form');
$this->setAttribute('enctype', 'multipart/form-data');
$this->add(array(
'name' => 'testselect',
'type' => 'Zend\Form\Element\Select',
'attributes' => array(
'class' => 'single-select',
'id' => 'testselect',
'required' => 'required',
),
'options' => array(
'value_options' => /***here I need to call helper function getMyList()****/,
'empty_option' => 'Select Status'
),
));
}
function setDbAdapter(AdapterInterface $dbAdapter) {
$this->dbAdapter = $dbAdapter;
}
function getDbAdapter() {
return $this->dbAdapter;
}
public function getServiceLocator() {
return $this->serviceLocator;
}
public function setServiceLocator(ServiceLocatorInterface $serviceLocator) {
$this->serviceLocator = $serviceLocator;
}
}
I am not sure how to call the helper function here. Please help I am relatively new to ZF2.
The code I pasted is sample actually getMyList function is suppose to populate lengthy array and I don't want to put that lengthy array in form as I will be reusing the array at few more places.

Answer 1

got it myself.
I can pass the servicelocator from controller.
$form = new \myspace\Form\UserForm(array('dbAdapter' => $dbAdapter,'sm'=>$this->getServiceLocator()));
and then in form
....
....
$this->add(array(
'name' => 'testselect',
'type' => 'Zend\Form\Element\Select',
'attributes' => array(
'class' => 'single-select',
'id' => 'testselect',
'required' => 'required',
),
'options' => array(
'value_options' => $this->getMyArray($args['sm']),
'empty_option' => 'Select Status'
),
));
....
....
function getMyArray($serviceLocator) {
$master = new MyHelper($serviceLocator);
return $master->getMyList();
}