Fix media maxFiles(1) for Intertia requests

[lpheller]

Currently when using an image field that should only every have 1 file attached like this:

$form->image('image')
    ->maxFiles(1);

which would then be loaded and passed to inertia using the loadResourceArray method:

return Inertia::render('Home/Home', [
    'form' => HomeConfig::loadResourceArray(),
]);

an error will be thrown by laravel-inertia, as the response is not compatible.

Error
Call to undefined method Symfony\Component\HttpFoundation\StreamedResponse::getData()

Inertia\Response::Inertia\{closure}
vendor/inertiajs/inertia-laravel/src/Response.php:87

This error happens because in Ignite\Crud\Models\Concerns\HasFields getMediaFieldValue() it's defined to return the first media immidiately if maxFiles is set to 1:

litstack/src/Crud/Models/Concerns/HasFields.php

Lines 133 to 141 in 5814831

	public function getMediaFieldValue(MediaField $field)
	{
	$media = $this->getMedia($field->id);
	if ($field->maxFiles == 1) {
	$media = $media->first();
	}
	return $media;
	}

This however seems to be incompatible with the this line form Ignite\Crud\FormResource toArray() method:

litstack/src/Crud/FormResource.php

Line 73 in 5814831

$value = $this->getAttribute($field->local_key);

My suggestion here is a simple addition to check if the field is an instance of MediaField and directly use the method used in HasFields@getMediaFieldValue without the reassignment if it's only one file.

I think this is appropriate fix as I'm not sure what would break if I changed the getMediaFieldValue method directly (although the backend doesn't actually seem to care).

[jannescb]

👍