Update to Drupal 8.1.0. For more information, see https://www.drupal.org/drupal-8.1.0-release-notes

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Pantheon Automation 2016-04-20 09:56:34 -07:00 committed by Greg Anderson
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DependencyInjection Component
=============================
DependencyInjection manages your services via a robust and flexible Dependency
Injection Container.
Here is a simple example that shows how to register services and parameters:
```php
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Reference;
$sc = new ContainerBuilder();
$sc
->register('foo', '%foo.class%')
->addArgument(new Reference('bar'))
;
$sc->setParameter('foo.class', 'Foo');
$sc->get('foo');
```
Method Calls (Setter Injection):
```php
$sc = new ContainerBuilder();
$sc
->register('bar', '%bar.class%')
->addMethodCall('setFoo', array(new Reference('foo')))
;
$sc->setParameter('bar.class', 'Bar');
$sc->get('bar');
```
Factory Class:
If your service is retrieved by calling a static method:
```php
$sc = new ContainerBuilder();
$sc
->register('bar', '%bar.class%')
->setFactory(array('%bar.class%', 'getInstance'))
->addArgument('Aarrg!!!')
;
$sc->setParameter('bar.class', 'Bar');
$sc->get('bar');
```
File Include:
For some services, especially those that are difficult or impossible to
autoload, you may need the container to include a file before
instantiating your class.
```php
$sc = new ContainerBuilder();
$sc
->register('bar', '%bar.class%')
->setFile('/path/to/file')
->addArgument('Aarrg!!!')
;
$sc->setParameter('bar.class', 'Bar');
$sc->get('bar');
```
The DependencyInjection component allows you to standardize and centralize the
way objects are constructed in your application.
Resources
---------
You can run the unit tests with the following command:
$ cd path/to/Symfony/Component/DependencyInjection/
$ composer install
$ phpunit
* [Documentation](https://symfony.com/doc/current/components/dependency_injection/index.html)
* [Contributing](https://symfony.com/doc/current/contributing/index.html)
* [Report issues](https://github.com/symfony/symfony/issues) and
[send Pull Requests](https://github.com/symfony/symfony/pulls)
in the [main Symfony repository](https://github.com/symfony/symfony)