ZF2: inject variables in constructor of service - dependency-injection

Question

Is there a way to create a new instance of a service and adding constructor parameters? I am a bit new to depency injection, and I find I can only add services as constructor parameters and not runtime variables through a factory.
The code I have looks similar to this:
Class MyService
{
private $name;
private $active;
public function __construct($name,$active)
{
$this->name = $name;
$this->active = $active;
}
}
$myService = $this->getServiceLocator()->get('MyService')

Answer 1

Yes there is a way by using the MutableCreationOptionsTrait trait in your factory.
class YourServiceFactory implements FactoryInterface, MutableCreationOptionsInterface
{
use MutableCreationOptionsTrait;
public function createService(ServiceLocatorInterface $serviceLocator)
{
if (isset($this->creationOptions['name'])) {
// do something with the name option
}
if (isset($this->creationOptions['active'])) {
// do something with the active option
}
$yourService = new YourService(
$this->creationOptions['active'],
$this->creationOptions['name']
);
return $yourService;
}
}
The above shown code implements the trait for creation options. With this trait you can handle an array of options in your factory. Call your service like in the following code.
$yourService = $this->getServiceLocator()->get(YourService::class, [
'active' => true,
'name' => 'Marcel',
]);
Easy as pie. ;)

Answer 2

Let's say your service exists:
Class MyService
{
private $name;
private $active;
public function __construct($name,$active)
{
$this->name = $name;
$this->active = $active;
}
}
If instead of ->get()'ing it, you could ->build() it :)
class SomeFactory implements FactoryInterface
{
public function __invoke(ContainerInterface $container, $requestedName, array $options = null)
{
return $container->build(MyService::class, ['name' => "Foo", 'active' => true]);
// Line below works as well, using a variable requested name, handy for an AbstractFactory of some kind (e.g. one that creates different adapters in the same way with same params)
// return $container->build($requestedName, ['name' => "Foo", 'active' => true]);
}
}
Check out the ServiceManager build() function
Note: Not sure since when it's present, this works in higher versions of ZF2 and all of ZF3.
Note 2: Both get() and build() call function doCreate(). Function declaration:
private function doCreate($resolvedName, array $options = null)
get() does: $object = $this->doCreate($name);
build() does: return $this->doCreate($name, $options);