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Clarify differences between attributes. #18896

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Sep 20, 2023
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Clarify differences between attributes. #18896

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9 changes: 6 additions & 3 deletions service_container/autowiring.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -658,7 +658,8 @@ Generate Closures With Autowiring
---------------------------------

A **service closure** is an anonymous function that returns a service. This type
of instanciation is handy when you are dealing with lazy-loading.
of instanciation is handy when you are dealing with lazy-loading. It is also
useful for non-shared service dependencies.

Automatically creating a closure encapsulating the service instanciation can be
done with the
Expand Down Expand Up @@ -716,7 +717,9 @@ In this case, you can use the
:class:`Symfony\Component\DependencyInjection\Attribute\\AutowireCallable` attribute
to generate a closure with the same signature as a specific method of a service. When
this closure is called, it will pass all its arguments to the underlying service
function::
function. If the closure needs to be called more than once, the service instance
is reused for repeated calls. Unlike a service closure, this will not
create extra instances of a non-shared service.

// src/Service/MessageGenerator.php
namespace App\Service;
Expand All @@ -727,7 +730,7 @@ function::
{
public function __construct(
#[AutowireCallable(service: 'third_party.remote_message_formatter', method: 'format')]
\Closure $formatCallable
private \Closure $formatCallable
) {
}

Expand Down