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[FrameworkBundle] Add support for union types on #[AsEventListener] #21470

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Oct 6, 2025
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[FrameworkBundle] Add support for union types on #[AsEventListener] #21470

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10 changes: 10 additions & 0 deletions event_dispatcher.rst
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Expand Up @@ -210,6 +210,12 @@ can also be applied to methods directly::
// ...
}

#[AsEventListener]
public function onMultipleCustomEvent(CustomEvent|AnotherCustomEvent $event): void
{
// ...
}

#[AsEventListener(event: 'foo', priority: 42)]
public function onFoo(): void
{
Expand All @@ -228,6 +234,10 @@ can also be applied to methods directly::
Note that the attribute doesn't require its ``event`` parameter to be set
if the method already type-hints the expected event.

.. versionadded:: 7.4

The support for union types in the method type-hints was introduced in Symfony 7.4.

.. _events-subscriber:

Creating an Event Subscriber
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