Syntax for function_score in Elastic Search

Question

I am new to Elastic Search. I have indexed movie artists (actors and directors) in ElasticSearch and a simple text search works fine e.g if I search for 'steven' with the following syntax ``` {"query": {"query_string": {"query":"steven"} } } ``` ... I get the following results, which are fine : ``` 1. Steven Conrad - Popularity (from document) = 487 - elasticsearch _score = 3,2589545 2. Steven Knight - Popularity (from document) = 487 - elasticsearch _score = 3,076738 3. Steven Waddington - Popularity (from document) = 431 - elasticsearch _score = 2,4931839 4. Steven E. De Souza - Popularity (from document) = 534 - elasticsearch _score = 2,4613905 5. Steven R. Monroe - Popularity (from document) = 293 - elasticsearch _score = 2,4613905 6. Steven Mackintosh - Popularity (from document) = 363 - elasticsearch _score = 2,2812681 7. Steven Wright - Popularity (from document) = 356 - elasticsearch _score = 2,2812681 8. Steven Soderbergh - Popularity (from document) = 5947 - elasticsearch _s…

Accepted Answer

have you missed the `.value` near `doc['...']`?

this works for me (i stored integers without mapping):

```
$ curl -XPUT localhost:9200/test/test/a -d '{"name":"steven", "popularity": 666}'
{"_index":"test","_type":"test","_id":"a","_version":1,"created":true}

$ curl -XPUT localhost:9200/test/test/b -d '{"name":"steven", "popularity": 42}' 
{"_index":"test","_type":"test","_id":"b","_version":1,"created":true}

$ curl -XPOST localhost:9200/test/test/_search\?pretty -d '{ "query": { "custom_score": { "query": { "match_all": {}}, "script": "_score * doc[\"popularity\"].value" } } }'                                                                                                                                                 
{
  "took" : 83,
  "timed_out" : false,
  "_shards" : {
    "total" : 1,
    "successful" : 1,
    "failed" : 0
  },
  "hits" : {
    "total" : 2,
    "max_score" : 666.0,
    "hits" : [ {
      "_index" : "test",
      "_type" : "test",
      "_id" : "a",
      "_score" : 666.0, "_source" : {"name":"steven", "popularity": 666}
    }, {
      "_index" : "test",
      "_type" : "test",
      "_id" : "b",
      "_score" : 42.0, "_source" : {"name":"steven", "popularity": 42}
    } ]
  }
}
```

Syntax for function_score in Elastic Search

Solution

Problem