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[HttpKernel] Fix variadic TypeError for #[MapUploadedFile] #54901

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DjordyKoert
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Q A
Branch? 7.1
Bug fix? yes
New feature? no
Deprecations? no
Issues Fix #...
License MIT

This PR fixes a bug introduced in #49978 where using #[MapUploadedFile] with a variadic argument causes a TypeError:

class MyController
{
    public function __invoke(
        #[MapUploadedFile] UploadedFile ...$documents,
    ): Response {
    }
}
Argument #1 must be of type Symfony\\Component\\HttpFoundation\\File\\UploadedFile, array given

(Bug fix taken from #54817)

@carsonbot carsonbot added this to the 7.1 milestone May 13, 2024
@DjordyKoert DjordyKoert changed the title [HttpKernel] Fix variadic TypeError for MapUploadedFile [HttpKernel] Fix variadic TypeError for #[MapUploadedFile] May 13, 2024
@DjordyKoert
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Failing tests seem unrelated

@@ -170,7 +170,11 @@ public function onKernelControllerArguments(ControllerArgumentsEvent $event): vo
};
}

$arguments[$i] = $payload;
if ($argument->metadata->isVariadic() && \is_array($payload)) {
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if the payload is not an array, we should throw a 422 instead, don't you think?
we should also use array_is_list so that we don't map to named arguments by mistake

@@ -170,7 +170,11 @@ public function onKernelControllerArguments(ControllerArgumentsEvent $event): vo
};
}

$arguments[$i] = $payload;
if ($argument->metadata->isVariadic() && \is_array($payload)) {
array_splice($arguments, $i, 1, $payload);
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could we use array_merge instead? that might be more readable

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@melya melya Jul 29, 2024

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Seems like the PR is somewhat stale 😞

Unfortunately, array_merge won't work here because the current logic processes the existing $arguments and replaces them one by one. The variadic variable can only be at the end of the function signature, so we need to extend that array further.
Therefore, array_splice is appropriate here.

I have added a bit updated fix to my PR, where I tried to fix another related issue with #[MapUploadedFile]

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@melya I will close this PR then. Thank you :)

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4 participants