Elasticsearch subdocument facet count

Elasticsearch subdocument facet count

curl -XPOST http://localhost:9200/my/terms/_search?pretty=true -d '
  {
    "query" : { "wildcard" : {"term" : "fire"} },
    "facets" : {
      "langs" : { "terms" : {"field" : "translations.lang"} }
    }
  }
'

Result:

{
  "took" : 2,
  "timed_out" : false,
  "_shards" : {
    "total" : 5,
    "successful" : 5,
    "failed" : 0
  },
  "hits" : {
    "total" : 1,
    "max_score" : 1.0,
    "hits" : [ {
      "_index" : "my",
      "_type" : "terms",
      "_id" : "5097715abacf848020000010",
      "_score" : 1.0, "_source" : {"lang":"en","term":"fire","translations":[{"_id":"5097715abacf848020000011","lang":"tr","translation":"ateş","score":"0","createDate":"2012-11-05T07:57:14.659Z","author":"anonymous"},{"_id":"50977160bacf848020000015","lang":"tr","translation":"duman","score":"0","createDate":"2012-11-05T07:57:20.470Z","author":"anonymous"}],"author":"anonymous","createDate":"2012-11-05T07:57:14.658Z"}
    } ]
  },
  "facets" : {
    "langs" : {
      "_type" : "terms",
      "missing" : 0,
      "total" : 1,
      "other" : 0,
      "terms" : [ {
        "term" : "tr",
        "count" : 1
      } ]
    }
  }
}