fix(laravel): persist morph relations (#7170)

Author: Seb33300

src/Laravel/Eloquent/State/PersistProcessor.php

@@ -20,6 +20,8 @@
 use ApiPlatform\State\ProcessorInterface;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Relations\MorphMany;
+use Illuminate\Database\Eloquent\Relations\MorphTo;
 
 /**
  * @implements ProcessorInterface<\Illuminate\Database\Eloquent\Model, \Illuminate\Database\Eloquent\Model>
@@ -45,7 +47,7 @@ public function process(mixed $data, Operation $operation, array $uriVariables =
                 continue;
             }
 
-            if (BelongsTo::class === $relation['type']) {
+            if (BelongsTo::class === $relation['type'] || MorphTo::class === $relation['type']) {
                 $rel = $data->{$relation['name']};
 
                 if (!$rel->exists) {
@@ -57,7 +59,7 @@ public function process(mixed $data, Operation $operation, array $uriVariables =
                 $this->relations[$relation['method_name']] = $relation['name'];
             }
 
-            if (HasMany::class === $relation['type']) {
+            if (HasMany::class === $relation['type'] || MorphMany::class === $relation['type']) {
                 $rel = $data->{$relation['name']};
 
                 if (!\is_array($rel)) {