Elasticsearhc filter sub object before search - elasticsearch

Question

Let's say I have index like this:
{
"id": 6,
"name": "some name",
"users": [
{
"id": 1,
"name": "User1",
"isEnabled": false,
},
{
"id": 2,
"name": "User2",
"isEnabled": false,
},
{
"id": 3,
"name": "User3,
"isEnabled": true,
},
]
}
what I need is to return that index while user searching for the name some name, but also I want to filter out all not enabled users, and if there is not enabled users omit that index.
I tried to use filters like this:
{
"query": {
"bool": {
"must": {
"match": {
"name": "some name"
}
},
"filter": {
"term": {
"users.isEnabled": true
}
}
}
}
}
but in such a case I see index with all users no matter if user is enabled or not. I'm a bit new but is there a way to do so??? I can filter out all that in code after getting data from elasticsearch but in such a case it can break pagination if I remove some index without enabled users from result set.
I'm a bit new to elasticsearch, but as far I can't find how to do it. Thank you in advice!

Answer 1

Elasticsearch will return whole document if there is any match. If you update your mapping and make users array nested, you can achieve this by using inner hits. This is a basic example mapping that works:
{
"mappings": {
"properties": {
"name": {
"type": "text"
},
"users": {
"type": "nested"
}
}
}
}
And if you send a query like following, response will contain id and name from the parent document, and it will contain inner_hits that match to your user's isEnabled query.
{
"_source": ["id", "name"],
"query": {
"bool": {
"must": [
{
"match": {
"name": "some name"
}
},
{
"nested": {
"path": "users",
"query": {
"term": {
"users.isEnabled": {
"value": true
}
}
},
"inner_hits": {}
}
}
]
}
}
}
This is an example response
{
"took" : 7,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : {
"value" : 1,
"relation" : "eq"
},
"max_score" : 1.9375811,
"hits" : [
{
"_index" : "test",
"_type" : "_doc",
"_id" : "1",
"_score" : 1.9375811,
"_source" : {
"name" : "some name",
"id" : 6
},
"inner_hits" : {
"users" : {
"hits" : {
"total" : {
"value" : 1,
"relation" : "eq"
},
"max_score" : 1.540445,
"hits" : [
{
"_index" : "test",
"_type" : "_doc",
"_id" : "1",
"_nested" : {
"field" : "users",
"offset" : 2
},
"_score" : 1.540445,
"_source" : {
"id" : 3,
"name" : "User3",
"isEnabled" : true
}
}
]
}
}
}
}
]
}
}
Then you can do the mapping in the application.