laravel-5

Service Container 126
.
1 use App\Contracts\EventPusher;
2
3 /**
4 * Create a new class instance.
5 *
6 * @param EventPusher $pusher
7 * @return void
8 */
9 public function __construct(EventPusher $pusher)
10 {
11 $this->pusher = $pusher;
12 }
Contextual Binding
Sometimes you may have two classes that utilize the same interface, but you wish to inject different
implementations into each class. For example, when our system receives a new Order, we may want
to send an event via PubNub⁵⁴ rather than Pusher. Laravel provides a simple, fluent interface for
defining this behavior:
.
1 $this->app->when('App\Handlers\Commands\CreateOrderHandler')
2 ->needs('App\Contracts\EventPusher')
3 ->give('App\Services\PubNubEventPusher');
You may even pass a Closure to the give method:
.
1 $this->app->when('App\Handlers\Commands\CreateOrderHandler')
2 ->needs('App\Contracts\EventPusher')
3 ->give(function () {
4 // Resolve dependency...
5 });
⁵⁴http://www.pubnub.com/