Description
Laravel Version
12.15.0
PHP Version
8.3
Database Driver & Version
No response
Description
In v12.15.0 release, Illuminate/Routing/ResponseFactory::stream() (i.e. response()->stream()) had a change from directly returning a new Symfony StreamedResponse to performing other actions first and then instantiating the StreamedResponse. The Symfony StreamedResponse parameters can take a null "$callable" value, so passing null in for response()->stream() was possible before v12.15.0 but not after, due to the introduced code.
While the signature of ResponseFactory::stream() does not indicate that null is allowed for the $callable parameter, it worked before v12.15.0 and the Symfony StreamedResponse that it wraps accepts null, so it seems more like an oversight than truly intended requirement to pass the $callable.
I'm reporting this because it breaks streaming in Livewire. Livewire calls response()->stream() explicitly with a null value for $callable (see Features/SupportStreaming/SupportStreaming line 22). Granted, this is a Livewire error for not adhering to the function signature, but it may affect other applications that similarly were passing null to response()->stream() and successfully getting a streamed response.
Steps To Reproduce
v12.14.1:
$ php artisan tinker
Psy Shell v0.12.8 (PHP 8.3.15 — cli) by Justin Hileman
> response()->stream(null)->getStatusCode()
= 200v12.15.0:
$ php artisan tinker
Psy Shell v0.12.8 (PHP 8.3.15 — cli) by Justin Hileman
> response()->stream(null)->getStatusCode()
ReflectionException Function () does not exist.