Laravel Bind Object Interface with an implementation that has variables parameters in it's constructor

Question

Please note that before aksing this questions I've looked into:

laravel-4 way to inject an object that requires configuration into a controller

Laravel 4: Passing data from make to the service provider

and

Laravel 4: Confused about how to use App::make()

But I cannot see that they answer my question!

Domain Model: A Site must have an Owner and currently this owner is of type Customer but can change in the future to be a Reseller or an Employee etc.. so I'm using Polymorphism as follows:

class Site has an Owner Property. Owner is an interface, Customer is a class which implements Owner, Customer has a Name and a Uid therefore these are required in the constructor of Customer.

Now I want to bind the Customer implementation to the Owner interface so that whenever I call Owner I get a Customer.

We would normally do this:

class UseCustomerAsSiteOwnerServiceProvider extends ServiceProvider{

    public function register()
    {
        $this->app->bind('hidden\Domain\Model\Site\Owner', function ($app)
        {
            return $this->app->make(new Customer());
        });


    }

}

However Customer() requires $id and $name to be initialized and these are variable objects - not static so I don't know how to pass them?

I tried this:

public function register()
    {
        $this->app->bind('hidden\Domain\Model\Site\Owner', function ($app) use ($id, $name)
        {
            return $this->app->make(new Customer($id, $name));
        });


    }

But in this case the $name and $id in the USE statement are not defined. Anyone has ideas?

UPDATE: The Customer Constructor is as follows:

    /**
     * Initialise a new Customer
     *
     * @param Identifier $id
     * @param CustomerName $name
     */
    public function __construct(Identifier $id, $name)
    {
        $this->id       =       $this->setId($id);
        $this->name     =       $this->setName($name);
    }

This will be initialized from an Aggregate root (Site). The correct types will be passed to it.

You are passing them into the closure correctly, they aren't defined because you never defined them before the closure. Where exactly are `$id` and `$name` coming from and what do you mean by `variable objects`? — user1669496, Apr 07 '15 at 12:56
@user3158900 I updated the question with more information. What I mean is that both the Id and the Name will vary in values depending on which Customer we want to initialize. The example questions i found all use static values as parameters so it's easy to use them in Service Provider. — Keith Mifsud, Apr 07 '15 at 13:01

score 0 · Answer 1 · answered Apr 07 '15 at 13:39

Since I don't think it's possible to pass variables, I decided to remove the constructor from the Customer and set it's properties using custom methods so that now I can say:

$this->owner->setId(Identifier Id). The service provider will resolve Owner to its Customer implementation.

Laravel Bind Object Interface with an implementation that has variables parameters in it's constructor

1 Answers1