Slim 4 - League Container

Daniel Opitz
Daniel Opitz
03 May 2020

Table of contents

Requirements

Introduction

The League Container is a small but powerful dependency injection container http://container.thephpleague.com

Installation

To install League Container, run:

composer require league/container

Configuration

Add the database settings to Slim’s settings array, e.g config/container.php:

<?php

use Monolog\Logger;
use Psr\Container\ContainerInterface;
use Psr\Log\LoggerInterface;

return [
    'settings' => function () {
        return require __DIR__ . '/settings.php';
    },

    LoggerInterface::class => function (ContainerInterface $container) {
        $logger = new Logger('name');
        
        // ...
        
        return $logger;
    },
    
    // Add more definitions here...
}

Bootstrapping

In your config/bootstrap.php or wherever you have your boostrap code:

<?php

use League\Container\Container;
use League\Container\ReflectionContainer;
use Slim\App;
use Symfony\Component\Translation\Translator;

require_once __DIR__ . '/../vendor/autoload.php';

$container = new Container();
$container->defaultToShared(true);

// Register the reflection container as a delegate to enable auto wiring
$container->delegate(new ReflectionContainer());

// Add container definitions (closures)
foreach (require __DIR__ . '/container.php' as $key => $factory) {
    $container->add($key, $factory)->addArgument($container);
}

// Create slim app instance
AppFactory::setContainer($container);
$app = AppFactory::create();

// Add routes, middleware etc...

$app->run();

Known issues