Is it possible to consider a DI container as a kind of factory or what am I doing wrong?

Question

Laravel

I inject into the controller's constructor and then just call the method.
This is what my service provider looks like

public function register()
    {
        //
        $this->app->bind(CampaignService::class, function($app) {
            $entityManager = $app->make('registry')->getManager();
            $doctrineCampaignRepository = new DoctrineCampaignRepository($entityManager, $entityManager->getRepository(Campaign::class));
            $doctrineCampaignTypeRepository = new DoctrineCampaignTypeRepository($entityManager);
            $doctrineCampaignCategoryRepository = new DoctrineCampaignCategoryRepository($entityManager);
            return new CampaignService($doctrineCampaignRepository, $doctrineCampaignTypeRepository, $doctrineCampaignCategoryRepository);
        });
    }

This is my first time working with service providers and containers, but am I doing it right? Looks like a factory, doesn't it? Or is it the way it is or I'm using it for other purposes, point out the errors, please

Answer 1

The bind method just registers the "factory". Those. each time a service is resolved (received) from the container, it will be created according to the defined scheme.

$container->call(function(CampaignService $c): void {
    echo \spl_object_id($c); // 1
});

$container->call(function(CampaignService $c): void {
    echo \spl_object_id($c); // 2
});

If the service must be constant, then it makes sense to replace bind with singleton

$container->call(function(CampaignService $c): void {
    echo \spl_object_id($c); // 1
});

$container->call(function(CampaignService $c): void {
    echo \spl_object_id($c); // 1
});