CODEWITHSUNDEEP
elasticsearch
zuko
zuko

Reputation: 470

How can I add filter to Completion Suggester in ElasticSearch?

Does anyone know how to add filter to suggester?

This works very well:

{
  "headline-suggest": {
    "text": "n",
    "completion": {
      "field": "headline_suggest"
    }
  }
}

But I want force ElasticSearch to build list of suggestions from subset of data, like:

{
  "headline-suggest": {
    "text": "n",
    "completion": {
      "field": "headline_suggest"
    }
  },
  "filter": {
    "term": {
      "mydifferentfield": "someword"
    }
  }
}

How can I achieve it?

(I'm using Elasticsearch 0.90.5)

Upvotes: 28

Views: 13981

Answers (3)

dg6
dg6

Reputation: 480

As per version 1.2.0, you can add context to your suggester and obtain filtered suggestions.

Introductory blog post Introductory blog post

Full Docs Full Docs

Upvotes: 23

SangDang
SangDang

Reputation: 11

There is no way to filter on your completion. As javanna said, Completion feature is built on FST at indexing time, so you couldn't use filter here.

To do it, you could play around with ngram/edge ngram. Let read here to get basic idea: http://jontai.me/blog/2013/02/adding-autocomplete-to-an-elasticsearch-search-application/

Upvotes: 0

phoet
phoet

Reputation: 18845

i am not really sure about that, but i think that you can not filter a suggest request in elasticsearch.

from what i read this is due to the kind of data structure it is stored in. elasticsearch calculates statistical data on the terms to suggest at index time and uses those for the suggest operations.

did you try performing a normal query in combination with a suggest? maybe there is a different outcome to that?

curl -s -XPOST 'localhost:9200/_search' -d '{
  "query" : {
    ...
  },
  "suggest" : {
    ...
  }
}'

Upvotes: 1

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