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[DependencyInjection] Document service tags being moved when decorating #17273

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javiereguiluz merged 1 commit into from
Oct 16, 2024
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[DependencyInjection] Document service tags being moved when decorating #17273

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4 changes: 3 additions & 1 deletion service_container/service_decoration.rst
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Expand Up @@ -128,7 +128,9 @@ but keeps a reference of the old one as ``.inner``:
The ``#[AsDecorator]`` attribute was introduced in Symfony 6.1.

The ``decorates`` option tells the container that the ``App\DecoratingMailer``
service replaces the ``App\Mailer`` service. If you're using the
service replaces the ``App\Mailer`` service.
:ref:`Service tags<How to Work with Service Tags> are moved as well.
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@alamirault alamirault Oct 17, 2023

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If I understand well symfony codebase, not all tags are kept

https://github.com/symfony/symfony/blob/7de25db56093a53b0b2d85f96d716ff6e9bf7147/src/Symfony/Component/DependencyInjection/Compiler/DecoratorServicePass.php#L49-L52

https://github.com/symfony/symfony/blob/7de25db56093a53b0b2d85f96d716ff6e9bf7147/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php#L739-L748

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@chx chx Oct 17, 2023

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Documenting all that is a bit too much for me I am afraid . I rarely use github for collaboration, how do I invite others to help?

If you're using the
:ref:`default services.yaml configuration <service-container-services-load-example>`,
the decorated service is automatically injected when the constructor of the
decorating service has one argument type-hinted with the decorated service class.
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