在Symfony中使用学说更新实体

Question

I want to update values in my Entity using PATCH method, but when I try to do that, doctrine create new record in table, but do not update. For example I want to update name attribute, so I send this JSON array (in url I send id of the record: api.test/item/{id}):

{
   "name": "newname"
}

My Controller:

public function updateItemAction(Request $request, $id)
{
    $serializer = $this->get('jms_serializer');

    $content = $request->getContent();

    $item = $serializer->deserialize($content,Item::class,'json');

    $em = $this->getDoctrine()->getManager();
    $em->getRepository(Item::class)->find($id);
    $em->persist($item);
    $em->flush();
    return new View("updated!",Response::HTTP_OK);
}

Answer 1

您必须从代码中撤回persist方法，它将更好地工作。

Answer 2

Have you tried using the merge() function? This allows you to merge the entity into the database, updating the existing entity. Call this function instead of persist. Here is a guide https://www.vivait.co.uk/labs/updating-entities-when-an-insert-has-a-duplicate-key-in-doctrine