Elasticsearch query based on result of initial query

Question

I have an interesting problem, I have an Elasticsearch query which brings back whatever results, however, some of these results have have other results associated with them, like comments associated with a forum post.

If a forum post is matched by my query, I want it to also match the associated comments, which all have a parent_id of the original forum post.

Is that possible?

Answer 1

In case anybody comes across this in the future, here is the answer!

https://www.elastic.co/guide/en/elasticsearch/reference/current/search-request-inner-hits.html#parent-child-inner-hits