下面是我在elasticsearch中的示例文档。我想搜索
es_activity_fields title 以及 value 也。如何使用searchkick构建查询？

id": 779,
"kid": "e8309846",
"es_activity_fields": [
   {
     "title": "trees_alive",
     "value": 10.0
   },
   {
     "title": "trees_dead",
     "value": 5.0
   },
]