zf2 ServiceManagerAwareInterface in Fieldset - php

Question

In my Zend\Form\Fieldset AddressFieldset it needs a Zend\Db\TableGateway\AbstractTableGateway BundeslandTable for a \Zend\Form\Element\Select().
So i implement \Zend\ServiceManager\ServiceManagerAwareInterface in this AddressFieldset and use the init() instead __construct().
And in module.config.php (not only in 'form_elements' tested, also in 'service_manager')
'form_elements' => array(
'factories' => array(
'MyFormway\Form\Fieldset\Address' => function($sm) {
$addressFieldset = new MyFormway\Form\Fieldset\AddressFieldset();
$addressFieldset->setServiceManager($sm);
return $addressFieldset;
}
),
),
In a \Zend\Form\Form's init():
$this->add(array(
'type' => 'MyFormway\Form\Fieldset\Address',
'name' => 'address',
));
this throws an error:
Zend\Form\FormElementManager::get was unable to fetch or create an instance for MyFormway\Form\Fieldset\Address
Why is zend unable to fetch an instance of this Fieldset?
edit-----------------------
'form_elements' => array(
'factories' => array(
'MyFormway\Form\Fieldset\Address' => function($formElementManager) {
die('inna form_elements config');
$addressFieldset = new \MyFormway\Form\Fieldset\AddressFieldset();
$addressFieldset->setServiceManager($formElementManager->getServiceLocator());
return $addressFieldset;
}
),
),
Because i have the Zend\Form\FormElementManager i fetch the ServiceLocator ...perhaps dont needed, because all XxxManager extends the Zend\ServiceManager\AbstractPluginManager and this extends ServiceManager.
In FormElementManager and also in AbstractPluginManager are no method getServiceManager().
But my problem: the die() is not called plus the error above. Is it a bug? ...i stand for a big wall :(
edit-----------------------
It works for a Form but not for a Fieldset!!!

Answer 1

Can you do a quick check if the \Invokable is called at all? Some professional die()-debugging will suffice.
Other than that a potential error source would be your injection of the ServiceManager. In the code you provide you're not actually injecting the ServiceLocator but rather the FormElementManager.
$addressFieldset->setServiceManager($sm->getServiceManager());
Doing it this way is considered Bad-Practice tho. You should only inject the stuff that you actually do need. Given you're injecting the whole manager i assume you're either working with Doctrine or you'll need access to some DB-Data. Do it like this:
'Foo' => function ($formElementManager) {
$sl = $formElementManager->getServiceManager();
$fs = new FooFieldset();
$fs->setDbDependency(
$sl->get('MyDbDependency')
);
return $fs;
}
Last little note: when you're adding a Fieldset, you don't need to add 'name' => 'foo' within the $this->add(), since the name of the fieldset will be defined via the Fieldset __construct('name').