ElasticSearch -使用script_fields添加带条件的新参数

PUT /users
{
  "mappings": {
    "properties": {
      "name": { "type": "text" },
      "age": { "type": "integer" }
    }
  }
}

POST /users/_doc/1
{
  "name": "Alice",
  "age": 25
}

POST /users/_doc/2
{
  "name": "Bob",
  "age": 16
}

GET /users/_search
{
  "query": {
    "match_all": {}
  },
  "script_fields": {
    "is_adult": {
      "script": {
        "source": "params._source.age >= 18"
      }
    }
  }
}

{
  "hits": {
    "total": 2,
    "max_score": 1,
    "hits": [
      {
        "_index": "users",
        "_type": "_doc",
        "_id": "1",
        "_score": 1,
        "_source": {
          "name": "Alice",
          "age": 25
        },
        "fields": {
          "is_adult": true
        }
      },
      {
        "_index": "users",
        "_type": "_doc",
        "_id": "2",
        "_score": 1,
        "_source": {
          "name": "Bob",
          "age": 16
        },
        "fields": {
          "is_adult": false
        }
      }
    ]
  }
}

POST /_scripts/test
{
  "script": {
    "source": "params._source.age >= 18"
  }
}