Search results not correct when using optimizers

[sambolek]

Hi,

we're testing this module out but noticed the products returned are always the same. Upon further inspection with xdebug, I found that our query doesn't satisfy either condition here https://github.com/Web200/magento-elasticsuite-autocomplete/blob/main/src/module-elasticsuite-autocomplete/Model/Query/Product.php#L215 . It seems that our autocomplete query is of "functionScore" type.

We have tried setting "wildcard" to "true" and using your custom indices/analyzer configuration from readme, but in that case, we got the following error:
Exception #0 (Elasticsearch\Common\Exceptions\BadRequest400Exception): {"error":{"root_cause":[{"type":"parsing_exception","reason":"[function_score] malformed query, expected [END_OBJECT] but found [FIELD_NAME]","line":1,"col":961}],"type":"parsing_exception","reason":"[function_score] malformed query, expected [END_OBJECT] but found [FIELD_NAME]","line":1,"col":961},"status":400}

Our optimizer configuration looks like this https://prnt.sc/l8bC5PYAxF6g

I'm checking further, but interested to know if you're using optimizers in any of your projects where this module is installed.

[julienanquetil]

Same issue here, I try by curiosity to see if there is any improvments on our setup, but unfortunalty got the error also.

[sambolek]

For now we just disabled optimizers on autocomplete and left them on for other request types. Not ideal, but we like the speed improvements on autocomplete very much.
@kpitn could you please shed some light on the line mentioned above - what is happening inside "query" method?

[kpitn]

I try to test query_string, but result are no so good.

I will try new wildcard field from elasticsearch 7.9+ https://www.elastic.co/guide/en/elasticsearch/reference/master/keyword.html#wildcard-field-type

Actually i remove all "wilcard" feature from this module.

[kpitn]

@sambolek @julienanquetil

Can you test the last version, I introduce prefix search, you can active the option with Elasticsuite > Autocomplete > Product Autocomplete > Improve Search > Yes