ody/container

dependency injection container for ODY framework

0.1.0 2025-03-13 18:24 UTC

Requires

• php: >=8.3
• psr/container: ^1.1.2
• psr/simple-cache: ^1.0.1

Requires (Dev)

• phpunit/phpunit: ^9.6

MIT

• Ilyas Deckers

README

⚠️ IMPORTANT: This repository is automatically generated from the ody repo and is read-only.

Please submit any pull requests or issues to the main ody repo instead.

Container

Overview

The ODY Container is a service container that manages class dependencies and performs dependency injection. Using a container makes it easy to manage and centralize the way objects are created in your application.

Installation

composer require ody/container

Basic Usage

Creating a Container

use Ody\Container\Container;

$container = new Container();

Binding

Basic Binding

// Bind an interface to a concrete implementation
$container->bind('App\Contracts\UserRepository', 'App\Repositories\DatabaseUserRepository');

// Bind with a closure
$container->bind('database', function ($container) {
    return new PDO('mysql:host=localhost;dbname=myapp', 'username', 'password');
});

Singleton Binding

Singleton bindings only resolve the object once and return the same instance on subsequent calls:

$container->singleton('App\Services\PaymentGateway', function ($container) {
    return new App\Services\StripePaymentGateway($container->make('config'));
});

Instance Binding

You can bind an existing instance into the container:

$config = new Config(['api_key' => 'your-api-key']);
$container->instance('config', $config);

Resolving

// Resolve from the container
$userRepository = $container->make('App\Contracts\UserRepository');

// Using array access notation
$database = $container['database'];

Auto-Resolution

The container can automatically resolve classes with their dependencies:

class UserController
{
    protected $repository;
    
    public function __construct(UserRepository $repository)
    {
        $this->repository = $repository;
    }
}

// The container will automatically resolve the UserRepository dependency
$controller = $container->make(UserController::class);

Advanced Features

Contextual Binding

Contextual binding allows you to specify different implementations based on the class that is requesting the dependency:

$container->when(PhotoController::class)
          ->needs(Filesystem::class)
          ->give(LocalFilesystem::class);

$container->when(VideoController::class)
          ->needs(Filesystem::class)
          ->give(CloudFilesystem::class);

Tagged Services

You can tag related bindings and then resolve them all at once:

$container->bind('SpeedReport', function () {
    return new SpeedReport();
});

$container->bind('MemoryReport', function () {
    return new MemoryReport();
});

$container->tag(['SpeedReport', 'MemoryReport'], 'reports');

// Resolve all services with the 'reports' tag
$reports = $container->tagged('reports');

Extending Resolved Objects

You can extend a resolved object to add additional functionality:

$container->bind('logger', function () {
    return new FileLogger();
});

$container->extend('logger', function ($logger, $container) {
    return new LogDecorator($logger);
});

Method Invocation with Dependency Injection

The container can call methods with automatic dependency injection:

$result = $container->call([$controller, 'show'], ['id' => 1]);

// Using Class@method syntax
$result = $container->call('UserController@show', ['id' => 1]);

Working with Swoole Coroutines

When working with Swoole's coroutines, you might need to scope certain bindings to the current coroutine:

// Register a scoped binding
$container->scoped('database.connection', function ($container) {
    return new DbConnection($container->make('config'));
});

// Clear scoped instances between requests
$container->forgetScopedInstances();

API Reference

Container Methods

Binding

• bind($abstract, $concrete = null, $shared = false): Register a binding with the container
• singleton($abstract, $concrete = null): Register a shared binding
• scoped($abstract, $concrete = null): Register a binding scoped to the current coroutine
• instance($abstract, $instance): Register an existing instance as shared
• extend($abstract, Closure $closure): Extend a resolved instance
• bindIf($abstract, $concrete = null, $shared = false): Register a binding if not already registered
• singletonIf($abstract, $concrete = null): Register a shared binding if not already registered
• scopedIf($abstract, $concrete = null): Register a scoped binding if not already registered

Resolving

• make($abstract, array $parameters = []): Resolve a type from the container
• get($id): Resolve a type from the container (PSR-11 compatible)
• build($concrete): Instantiate a concrete instance of a class
• factory($abstract): Get a closure to resolve the given type
• call($callback, array $parameters = [], $defaultMethod = null): Call a method with dependency injection

Alias and Tagging

• alias($abstract, $alias): Alias a type to a different name
• tag($abstracts, $tags): Assign tags to bindings
• tagged($tag): Resolve all bindings for a tag

Contextual Binding

• when($concrete): Define a contextual binding
• addContextualBinding($concrete, $abstract, $implementation): Add a contextual binding

Lifecycle Events

• resolving($abstract, Closure $callback = null): Register a resolving callback
• afterResolving($abstract, Closure $callback = null): Register an after resolving callback
• beforeResolving($abstract, Closure $callback = null): Register a before resolving callback

Container Management

• flush(): Clear all bindings and resolved instances
• forgetInstance($abstract): Remove a resolved instance
• forgetInstances(): Clear all resolved instances
• forgetScopedInstances(): Clear all scoped instances
• bound($abstract): Check if a binding exists
• resolved($abstract): Check if a type has been resolved
• has($id): Check if a binding exists (PSR-11 compatible)

ContextualBindingBuilder Methods

• needs($abstract): Define the abstract target that depends on the context
• give($implementation): Define the implementation for the contextual binding
• giveTagged($tag): Define tagged services to use as the implementation
• giveConfig($key, $default = null): Define a configuration value to use as the implementation

Exception Handling

The container throws various exceptions in different scenarios:

• BindingResolutionException: Thrown when a concrete cannot be built or resolved
• CircularDependencyException: Thrown when circular dependencies are detected
• EntryNotFoundException: Thrown when a binding is not found (implements PSR-11)

Integration with ODY Framework

The ContainerHelper class provides utility methods for integrating the container with the ODY framework:

use Ody\Container\Container;
use Ody\Container\ContainerHelper;

$container = new Container();
$config = require 'config/app.php';

// Configure the application container with basic services
$container = ContainerHelper::configureContainer($container, $config);

// Register all controllers in a directory
ContainerHelper::registerControllers($container, __DIR__ . '/app/Controllers');

License

The ODY Container is open-sourced software licensed under the MIT license.