(feat): allow backed enums as enum

Author: ictbeheer

src/PostData.php

@@ -102,7 +102,7 @@ private static function dataClass(string $postType): string
 		if (null === $classFQN) {
 			return static::class;
 		}
-		
+
 		if (! class_exists($classFQN)) {
 			throw new RuntimeException(sprintf('The class "%s" does not exist or is not autoloaded.', $classFQN));
 		}
@@ -137,7 +137,9 @@ private function loadMeta(int $id): void
 				$meta = $metaAttribute->newInstance();
 				$metaValue = $meta->getValue($id, $property->name, $this->metaPrefix());
 				if (null !== $metaValue && null !== $propertyTypeName) {
-					if ('Spatie\LaravelData\Data' === $propertyTypeName || is_subclass_of($propertyTypeName, 'Spatie\LaravelData\Data')) {
+					if (is_a($propertyTypeName, Data::class, true)) {
+						$metaValue = $propertyTypeName::from($metaValue);
+					} elseif (is_a($propertyTypeName, \BackedEnum::class, true) && (is_int($metaValue) || is_string($metaValue))) {
 						$metaValue = $propertyTypeName::from($metaValue);
 					}
 					$property->setValue($this, $metaValue);