fix: parse request data in context

src/Context.php

@@ -86,4 +86,12 @@ class Context
     {
         return $this->request->getQueryParams()['filter'][$name] ?? null;
     }
+
+    /**
+     * Get parsed JsonApi payload
+     */
+    public function getBody(): ?array
+    {
+        return json_decode($this->request->getBody()->getContents(), true);
+    }
 }

src/Endpoint/Create.php

@@ -42,7 +42,7 @@ class Create
         }
 
         $model = $this->newModel($resourceType, $context);
-        $data = $this->parseData($resourceType, $context->getRequest()->getParsedBody());
+        $data = $this->parseData($resourceType, $context->getBody());
 
         $this->validateFields($resourceType, $data, $model, $context);
         $this->fillDefaultValues($resourceType, $data, $context);

src/Endpoint/Update.php

@@ -40,7 +40,7 @@ class Update
             ));
         }
 
-        $data = $this->parseData($resourceType, $context->getRequest()->getParsedBody(), $model);
+        $data = $this->parseData($resourceType, $context->getBody(), $model);
 
         $this->validateFields($resourceType, $data, $model, $context);
         $this->loadRelatedResources($resourceType, $data, $context);