Zend 2: Model table from view helper error - php

Question

I'm having a problem with setting up a model table from a view helper. I have used the exact same code that I use within my regular controllers: e.g.:
namespace Application\View\Helper;
use Zend\View\Helper\AbstractHelper;
use Application\Model\MenusTable;
use Zend\ServiceManager\ServiceLocatorAwareInterface;
use Zend\ServiceManager\ServiceLocatorInterface;
**snipped**
public function setServiceLocator(ServiceLocatorInterface $serviceLocator)
{
$this->serviceLocator = $serviceLocator;
return $this;
}
public function getServiceLocator()
{
return $this->serviceLocator;
}
public function getMenusTable()
{
if (!$this->menusTable) {
$sm = $this->getServiceLocator();
$this->menusTable = $sm->get('Application\Model\MenusTable');
}
return $this->menusTable;
}
public function allLinks()
{
$all = $this->getMenusTable()->fetchAll();
return $all;
}
However I am met with this error:
Catchable fatal error: Argument 1 passed to Application\Model\MenusTable::__construct() must be an instance of Zend\Db\Adapter\Adapter, none given, called in C:\xampp\**snipped**\zend\library\Zend\ServiceManager\AbstractPluginManager.php on line 177 and defined in C:\xampp\**snipped**\Application\src\Application\Model\MenusTable.php on line 14
Everything works fine from the main controllers, but here I seem to hit a big problem - I'm new to Zend, but it appears to not be getting the factory from the Module.php file - is there any way to get it?
I have this in my Module.php - as said it works fine in a regular controller, but in a view helper it's not processed for some reason:
public function getServiceConfig()
{
return array
(
'factories' => array
(
'Application\Model\MenusTable' => function($sm)
{
$dbAdapter = $sm->get('Zend\Db\Adapter\Adapter');
$table = new MenusTable($dbAdapter);
return $table;
},
),
);
}

Answer 1

After re-reading your question I realized that your using ZF2.
here is a tutorial on using ServiceLocators http://framework.zend.com/wiki/display/ZFDEV2/Proposal+for+ServiceLocator+and+DependencyInjector
From the Documentation you need to define your DB connection.
$services = new ServiceLocator();
// Registering an object:
$services->set('db', $db);
// Lazy-loading by registering a closure:
$services->set('db', function() use ($config) {
$db = Db::factory($config->db);
return $db;
});
// Retrieving:
$db = $services->get('db');

Answer 2

First you should use the getServiceConfig() in your module ::
public function getServiceConfig()
{
return array(
'factories' => array(
'MODULE\Model\MenusTable' => function($sm) {
$tableGateway = $sm->get('MenusTableGateway');
$table = new MenusTable($tableGateway);
return $table;
},
'MenusTableGateway' => function ($sm) {
$dbAdapter = $sm->get('Zend\Db\Adapter\Adapter');
$resultSetPrototype = new ResultSet();
$resultSetPrototype->setArrayObjectPrototype(new Menus());
return new TableGateway('menus', $dbAdapter, null, $resultSetPrototype);
},
),
);
}
THE ADAPTER might be in your /config/autoload/global.php, like this :
'service_manager' => array(
'factories' => array(
'Zend\Db\Adapter\Adapter' => 'Zend\Db\Adapter\AdapterServiceFactory',
),
),
// CONNECTION DB
'db' => array(
'driver' => 'Pdo',
'dsn' => 'mysql:dbname=YOURDBNAME;host=localhost',
'username' => 'root',
'password' => '',
'driver_options' => array(
PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES \'UTF8\''
),
),
Next your View helper must extend AbstractHelper but also implement ServiceLocatorAwareInterface
class MyViewHelper extends AbstractHelper implements ServiceLocatorAwareInterface
I'll put the code in my website