Pass a value from controller to partial in ZF2 - zend-framework

Question

I want to pass some value from controller to view partial, basically, view partial is set using the placeholder in Application\Module.php, here is the code that does it.
<?php
namespace Application;
use Zend\Mvc\ModuleRouteListener;
use Zend\Mvc\MvcEvent;
use Zend\View\Renderer\PhpRenderer;
use Zend\View\Resolver;
use Zend\ServiceManager\ServiceManager;
class Module
{
public function onBootstrap(MvcEvent $e)
{
$eventManager = $e->getApplication()->getEventManager();
$moduleRouteListener = new ModuleRouteListener();
$eventManager->attach(\Zend\Mvc\MvcEvent::EVENT_DISPATCH, array($this, 'initBreadcrumbAndActionButtonWidget'));
$moduleRouteListener->attach($eventManager);
$serviceManager = $e->getApplication()->getServiceManager();
}
public function initBreadcrumbAndActionButtonWidget(\Zend\Mvc\MvcEvent $e)
{
$serviceManager = $e->getApplication()->getServiceManager();
$config = $serviceManager->get('config');
$viewHelperManager = $this->getViewHelperManager($e->getApplication()->getServiceManager());
$partialHelper = $viewHelperManager->get('partial');
$partial = $partialHelper('widgets/breadcrumb', array(
'config' => $config,
'actionButtons' => $config['action-buttons']
));
$placeHolder = $viewHelperManager->get('placeholder');
$placeHolder('widgets/breadcrumb')->set($partial);
}
public function getViewHelperManager($serviceManager)
{
$stack = new Resolver\TemplatePathStack(array('script_paths' => array(__DIR__ . '/view/')));
$resolver = new Resolver\AggregateResolver();
$resolver->attach($stack);
$renderer = new PhpRenderer();
$renderer->setResolver($resolver);
$viewHelperManager = $serviceManager->get('ViewHelperManager');
return $viewHelperManager;
}
public function getConfig()
{
return array_merge_recursive(
include __DIR__ . '/config/module.config.php',
);
}
public function getAutoloaderConfig()
{
return array(
'Zend\Loader\StandardAutoloader' => array(
'namespaces' => array(
__NAMESPACE__ => __DIR__ . '/src/' . __NAMESPACE__,
),
),
);
}
}
It is all working good till here, however now i want to pass a value from controller to the partial widgets/breadcrumb, after several attempt i thought implementing a ViewHelper could be a solution, and i implemented following view helper.
<?php
namespace Application\View\Helper;
use Zend\View\Helper\AbstractHelper;
class Variable extends AbstractHelper
{
protected $data;
public function __invoke()
{
return $this;
}
public function set($identifier, $data)
{
$this->data[$identifier] = $data;
return $this;
}
public function get($identifier)
{
return $this->data[$identifier];
}
}
In controller i assign the value to ViewHelper like this.
$viewHelperManager = $this->getServiceLocator()->get('ViewHelperManager');
$variable = $viewHelperManager->get('variable');
$variable->set('stack', 'overflow');
And in partial, to access the value i use the get method.
$this->variable()->get('stack');
Now my problem is that get() is rendered first hence the value set in controller has no effect.
My question is how can i make the set() gets rendered first so i can have the value in partial, or if there is any better approach of passing the value to partial please suggest.
Thanks.

Answer 1

Baaah, i called the view helper in wrong action, it worked when i moved the $variable->set('stack', 'overflow'); in the action where i wanted the value to pass.
Not sure if there can be a better solution, but this does the job for me to pass the value after i found no way in ZF2 that satisfies my requirement.