使用mongoengine从listfield嵌入式文档中检索所有条目

Question

我正在尝试使用mongoengine从listField（embeddedDcoument）查询所有详细信息。

    def get_image_details(self):
        image_detail = job_process.objects(__raw__={'image_details'[0][0]})
        image_detail = image_detail.to_json()
        return image_detail

这是数据库条目

"_id": ObjectId("5b86b7d363fea4bc4ea86150"),
"_cls": "job_process",
"title": "TITLE",
"job_id": "9faf4ff8-88b2-4051-bb98-763864ed9206",
"job_status": "new_job",
"date_time_stamp": new Date(1535555539094),
"author": "name of author",
"short_caption": "short caption",
"image_details": [
  [
    {
      "position": 0,
      "seconds": 46,
      "src_url": "https://tmp/1.jpg",
      "image_fname": "1.jpg",
      "local_url": "/image_folder/9faf4ff8-88b2-4051-bb98-763864ed9206/1.jpg"
      }
    ],
    [
      {
      "position": 1,
      "seconds": 3,
      "src_url": "https://hellos/2.jpg",
      "image_fname": "2.jpg",
      "local_url": "/image_folder/9faf4ff8-88b2-4051-bb98-763864ed9206/2.jpg"
     }
    ],
    [
      {
      "position": 2,
      "seconds": 6,
      "src_url": "https://slides/3.jpg",
      "image_fname": "3.jpg",
      "local_url": "/image_folder/9faf4ff8-88b2-4051-bb98-763864ed9206/3.jpg"
     }
    ],

我想做的就是检索所有“ image_details”