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[DependencyInjection] Autowire arguments using the #[TaggedIterator] attribute #17652

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Jan 5, 2023
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[DependencyInjection] Autowire arguments using the #[TaggedIterator] attribute #17652

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20 changes: 20 additions & 0 deletions service_container/tags.rst
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Expand Up @@ -591,6 +591,26 @@ application handlers::
}
}

Injecting tagged services can be also be done through autowiring thanks to the
``#[TaggedIterator]`` attribute. This attribute must be directly used on the
argument to autowire::

// src/HandlerCollection.php
namespace App;

use Symfony\Component\DependencyInjection\Attribute\TaggedIterator;

class HandlerCollection
{
public function __construct(#[TaggedIterator('app.handler')] iterable $handlers)
{
}
}

.. versionadded:: 5.3

The ``#[TaggedIterator]`` attribute was introduced in Symfony 5.3 and requires PHP 8.

.. seealso::

See also :doc:`tagged locator services </service_container/service_subscribers_locators>`
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