81 lines
1.6 KiB
Markdown
81 lines
1.6 KiB
Markdown
|
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');
|
||
|
|
```
|
||
|
|
|
||
|
|
Resources
|
||
|
|
---------
|
||
|
|
|
||
|
|
You can run the unit tests with the following command:
|
||
|
|
|
||
|
|
$ cd path/to/Symfony/Component/DependencyInjection/
|
||
|
|
$ composer install
|
||
|
|
$ phpunit
|