Simple PHP Autowiring

Package Installation

composer require rumur/autowire

How to use it?

It's actually pretty simple. A good starting point is to create an instance of Autowire class.

// plugin-name.php
<?php

use Rumur\Autowiring\Autowire;

$autowire = Autowire::create();

Register Singletons

Autowire allows you to register any instance/variable as a singleton, so you'll be able always get the same outcome, when one of your classes or functions would need such dependency.

For an instance, let's imagine that you need to inject wpdb class in some repositories of yours. For this, we would need to register wbdb as a singleton and just pass one of your repositories into the Autowire::make method and the rest Autowire does for you.

// plugin-name.php
<?php
// ...

$autowire->singleton(wpdb::class, fn() => $GLOBALS['wpdb']);

// plugin/repositories/IOrderRepository.php

interface IOrderRepository {
    public function find(int $order_id): ?Order
    public function findAll(): array
}

// plugin/repositories/OrderRepository.php
use wpdb;

class OrderRepository implements IOrderRepository {
    protected wpdb $connection;
    
    public function __construct(wpdb $connection) {
        $this->connection = $connection;
    }
    
    public function find(int $order_id): ?Order {
        // ...
    } 
    
    public function findAll(): array {
        // ...
    } 
    
    // ...
}

// Somewhere in the code
$order = $autowire->make(OrderRepository::class)->find(2022);

Binding

In case you need to bind a specific interface with its implementation Autowire gets you covered.

NOTE. In some case you don't have to bind all available classes to Autowire in order to be able to resolve them as a dependency, e.g. OrderController below never been bound to Autowire but it still can make it for you automatically.

// Somewhere where service providers are getting injected.
$autowire->bind(IOrderRepository::class, OrderRepository::class)

// app/http/api/OrderController.php
class OrderController {
    protected IOrderRepository $repository;
    
    public function __construct(IOrderRepository $repository) {
        $this->repository;
    }
    
    public function index(): array {
        return $this->repository->findAll();
    }
}

// Somewhere in you app.
$ctrl = app()->autowire->make(OrderController::class);

$orders = $ctrl->index();

Autowire callables

In case you need to resolve dependencies either for a method or any other callable instance, Autowire::call comes to rescue.

<?php
$autowire->singleton(IOrderRepository::class, OrderRepository::class)

class OrderController {
    public function index(IOrderRepository $repository): array {
        return $repository->findAll();
    }
}

$ctrl = new OrderController; 

$orders = app()->autowire->call([$ctrl,'index']);

// Or if `index` method is static do the following.
$orders = app()->autowire->call('OrderController::index');

License

This package is licensed under the MIT License - see the LICENSE.md file for details.