How to call a custom service on the service locator object from Module#getViewHelperConfig() in Zend Framewok 2? - module

Question

I have a ViewHelper and want to initialize it in Module#getViewHelperConfig():
<?php
namespace Search;
use statements...
class Module implements
ConfigProviderInterface,
ServiceProviderInterface,
AutoloaderProviderInterface,
ViewHelperProviderInterface {
public function getConfig() ...
public function getAutoloaderConfig() ...
public function getServiceConfig() {
$breakpoint = null;
try {
return array (
'factories' => array(
...
'SearchFormCourseSearchForm' => function ($serviceManager) {
$cacheService = $serviceManager->get('Cache\Model\CityStorage');
$cities = $cacheService->getCities();
$searchForm = new Form\CourseSearchForm($cities);
return $searchForm;
},
)
);
} ...
}
public function getViewHelperConfig() {
$breakpoint = null;
return array(
'factories' => array(
'searhForm' => function($serviceManager) {
$helper = new View\Helper\SearchForm(array('render' => true, 'redirect' => false));
$helper->setViewTemplate('search/search/search-courses');
$searchForm = $serviceManager->get('SearchFormCourseSearchForm');
$helper->setSearchForm($searchForm);
return $helper;
}
)
);
}
But ZF doesn't call my factory. Instead of this it tries to create a new SearchFormCourseSearchForm instance:
Fatal error: Uncaught exception 'Zend\ServiceManager\Exception\ServiceNotFoundException' with message 'Zend\ServiceManager\ServiceManager::get was unable to fetch or create an instance for SearchFormCourseSearchForm' in /var/www/bar/foo/vendor/zendframework/zendframework/library/Zend/ServiceManager/ServiceManager.php on line 456
How should I use service factories got from Module#getServiceConfig() creating a ViewHelper in Module#getViewHelperConfig()?

Answer 1

You need to get the main service locator. The $serviceManager in getViewHelperConfig() is the View Helper service locator.
To get the main service locator in your getViewHelperConfig() function, do the following:
$maimSm = $serviceManager->getServiceLocator();
Therefore:
public function getViewHelperConfig() {
return array(
'factories' => array(
'searhForm' => function($serviceManager) {
$helper = new View\Helper\SearchForm(array('render' => true, 'redirect' => false));
$helper->setViewTemplate('search/search/search-courses');
$maimSm = $serviceManager->getServiceLocator();
$searchForm = $maimSm->get('SearchFormCourseSearchForm');
$helper->setSearchForm($searchForm);
return $helper;
}
)
);
}
There are quite a few posts explaining this strategy in a bit more details, I'll go hunt for them.
Edit
See Using Zend Framework service managers in your application for a nice description of service managers/locators in ZF2.