DI - how pass parameters to service constructor from DI

Question

DI - how pass parameters to service constructor from DI

Dimss Dec '14

Created Dec '14	Last Reply Dec '14	Replies 1	Views 2271	Votes 0

Dimss 19.1k

Dec '14

I can't find a clear explanation of how pass parameters to constructor from DI. I have a two classes, every class should be instantiated by passing arguments to his constructor. From documentation I've fonund 2 possiable ways to do it, the first method is clear:


class ProductActivity extends Activity implements IActivity
{
    public function __construct($userID)
    {
        parent::__construct($userID);
    }
}

class ActivitiesBuilder
{
    /** @var IActivity $activity */
    protected $activity;

    public function __construct(IActivity $activity)
    {
        $this->setActivity($activity);
        $this->buildActivity();
    }
}

$di->set('productActivity', array(
    'className' => 'Yapi\Library\Activities\ProductActivity',
    'arguments' => array(
        array('type' => 'parameter', 'value' =>  null)
    )), true);

$di->set('activityBuilder', array(
    'className' => 'Yapi\Library\Activities\ActivitiesBuilder',
    'arguments' => array(
        array('type' => 'service', 'name' => null),
    )), true);

class UserController extends ControllerBase
{
    public function couponAction($userID, $limit = 'all')
    {
        $this->di->getService('productActivity')->setParameter(0, array('type' => 'parameter', 'value' => $userID));
        $this->di->getService('activityBuilder')->setParameter(0, array('type' => 'service', 'name' => 'productActivity'));
        $this->di->getActivityBuilder()
    }
}

This is a second method, what is not clear for me here, is how shold I register the service in this case:


class UserController extends ControllerBase
{
    public function couponAction($userID, $limit = 'all')
    {
        $this->di->get('activityBuilder', array($this->di->get('productActivity', array($userID))));
    }
}

Mitchell Macpherson
6.9k

Accepted
answer

in reply to

Dimss

Dec '14

I don't know if it's correct, but looks like this is how I should register services in case of second way

$di->set('productActivity', function ($userID) {
   return new Yapi\Library\Activities\ProductActivity($userID);
}, true);

$di->set('activityBuilder', function ($service) {
   return new Yapi\Library\Activities\ActivitiesBuilder($service);
}, true);

Close, you do it like so with anonymous closures, providing these variables are available in the scope of the bootstrap file.

$di->set('productActivity', function () use ($userID) {
    return new Yapi\Library\Activities\ProductActivity($userID);
}, true);

$di->set('activityBuilder', function () use ($service) {
    return new Yapi\Library\Activities\ActivitiesBuilder($service);
}, true);

Dimss · Answer 1 · 2014-12-05T01:55:56-07:00

I don't know if it's correct, but looks like this is how I should register services in case of second way

$di->set('productActivity', function ($userID) {
    return new Yapi\Library\Activities\ProductActivity($userID);
}, true);

$di->set('activityBuilder', function ($service) {
    return new Yapi\Library\Activities\ActivitiesBuilder($service);
}, true);