Dependency Injection Container for Contao Open Source CMS

This DI Container based on Pimple.

NOTE on Contao 4: This is obsolete in Contao 4 - you should use the symfony container in Contao 4.

This extension keeps compatibility for easing migration to Contao 4 - however, you should change your code to register your services using both registration ways.

For a howto of how to migrate to Contao 4, please refer to the UPGRADING-TO-CONTAO4.md

Register parameters and services

system/modules/X/config/services.php

$container['myservice.param'] = 'value';
$container['myservice'] = function($container) {
    return new MyServiceClassName();
}

Access parameters and services

class MyClass
{
    function myFunction()
    {
        global $container;

        $parameter = $container['myservice.param'];
        $service = $container['myservice'];
    }
}

Build-in services

The config object

/** @var \Config $config */
$config = $container['config'];

The environment object

/** @var \Environment $environment */
$environment = $container['environment'];

The database connection

/** @var \Database $database */
$database = $container['database.connection'];

The input object

/** @var \Input $input */
$input = $container['input'];

The backend or frontend user, depend on TL_MODE

/** @var \BackendUser|\FrontendUser $user */
$user = $container['user'];

The session object

/** @var \Session $session */
$session = $container['session'];

Lazy access to the $objPage object

/** @var DependencyInjection\Container\PageProvider */
$pageProvider = $container['page-provider'];
$page         = $pageProvider->getPage();