Setting a filterableAttributes must make the nested field facetSearchable too

[Kerollmops]

When setting a field in the filterable attributes tags, it seems that the nested fields tags.level0 are not facet searchable, and trying to search on it throws an error. This has been reported in this discussion.

[curquiza]

@Kerollmops did not try to reproduce the bug, we need to reproduce it to ensure this is a bug

[curquiza]

Hey, I quickly tested with v1.8.1, and I did not manage to reproduce

document:

[
  { "id": 2,    "identity": { "name": "Clem", "age": 25 } }
]

Settings

{
    "searchableAttributes": ["identity"],
    "filterableAttributes": ["identity"]
}

I tried both searches and I got not issues

{
    "q": "",
    "facets": ["identity"]
}

{
    "hits": [
        {
            "identity": {
                "name": "Clem",
                "age": 25
            },
            "id": 2
        }
    ],
    "query": "",
    "processingTimeMs": 0,
    "limit": 20,
    "offset": 0,
    "estimatedTotalHits": 1,
    "facetDistribution": {
        "identity": {},
        "identity.age": {
            "25": 1
        },
        "identity.name": {
            "Clem": 1
        }
    },
    "facetStats": {
        "identity.age": {
            "min": 25.0,
            "max": 25.0
        }
    }
}

{
    "q": "",
    "filter": "identity.age = 25"
}

{
    "hits": [
        {
            "identity": {
                "name": "Clem",
                "age": 25
            },
            "id": 2
        }
    ],
    "query": "",
    "processingTimeMs": 0,
    "limit": 20,
    "offset": 0,
    "estimatedTotalHits": 1
}

[bradenmacdonald]

@curquiza You didn't try the "facet search API", which is the one with the bug. If I recall correctly, the request to .../facet-search should look like

{"facetName": "identity.name", "facetQuery": "Clem", "q": "", "filter": []}

---

(separate issue about the opposite - searching for the parent field but wanting matches on child fields:)

In addition, there is a problem with the shape of the facet search API response - if you could facet keyword search for identity and have it return results from identity.name and identity.age as I would like, the current API response does not even have a field to indicate which facets actually matched.

{
    "facetHits": [
        {
            "value": "Which facet did this value come from? Who knows...",
            "count": 25
        },
...