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symfony/src/Symfony/Component/DependencyInjection/README.md
Fabien Potencier 38f03bd2f5 Merge branch '2.3' into 2.6
* 2.3:
  [FrameworkBundle] Fix title and placeholder rendering in php form templates.
  RequestDataCollector - small fix
  renamed composer.phar to composer to be consistent with the Symfony docs
  [FrameworkBundle] bumped min version of Routing to 2.3
  removed composer --dev option everywhere
  fixed a test
  [Console] Fixed output bug, if escaped string in a formatted string.
  [Security] Remove ContextListener's onKernelResponse listener as it is used
  Revert "minor #12652 [HttpFoundation] [Hackday] #9942 test: Request::getContent() for null value (skler)"
  Revert "fixed assertion"
  fixed assertion
  [HttpFoundation] [Hackday] #9942 test: Request::getContent() for null value
  fixed URL
  Add reference to documentation in FormEvents phpdocs
  [YAML] Fix one-liners to work with multiple new lines
  Keep "pre" meaning for var_dump quick-and-dirty debug
  [Console][Table] Fix cell padding with multi-byte

Conflicts:
	src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/widget_attributes.html.php
	src/Symfony/Bundle/FrameworkBundle/composer.json
	src/Symfony/Component/Console/Helper/TableHelper.php
2015-02-11 08:12:14 +01:00

1.6 KiB

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:

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):

$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:

$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.

$sc = new ContainerBuilder();

$sc
    ->register('bar', '%bar.class%')
    ->setFile('/path/to/file')
    ->addArgument('Aarrg!!!')
;
$sc->setParameter('bar.class', 'Bar');

$sc->get('bar');

Resources

You can run the unit tests with the following command:

$ cd path/to/Symfony/Component/DependencyInjection/
$ composer install
$ phpunit