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I have a table which has job_title field,

I want to make a fuzzy search let user can still get the result when they mis-spell query keyword.

For example, I have many records have the "Android developer" as its job_title,

When the user issues the incorrect search Job.es_qsearch("Andoirddd"), it should work as well by the help of NGRAM_ANALYZER

However, I could get any results from the incorrect keyword.

I can only get the result when I type Job.es_qsearch("Android")

How could I achieve the search result as I expect.

Thanks

job.rb

NGRAM_ANALYZER = {analysis: {
       filter: {
          autocomplete_filter: {
             type: "edge_ngram",
             min_gram: 3,
             max_gram: 20
          }
       },
       analyzer: {
          ngram_analyzer: {
             type: :custom,
             tokenizer: :standard,
             filter: [
                :lowercase,
                :autocomplete_filter
             ]
          }
       }
    }}

settings NGRAM_ANALYZER do
    mappings do
      indexes :job_title, include_in_all: 'ngram_analyzer'
      indexes :description, include_in_all: 'ngram_analyzer'
    end
end


def self.es_qsearch(*args, &block)
 q_params = {
        multi_match: {
          query: "*#{args}*",
          fields: ['job_title^5', 'description']
        }
      }

  __elasticsearch__.search(
    {
      query: q_params,
    }
  )
end

I used Fuzzy Query but it's still not working

Fuzzy Query sent this query to ES search

{:index=>"jobs",
   :type=>"job",
   :body=>{:query=>{:bool=>{:must=>[{:fuzzy=>{:description=>{:value=>["electrical"], :fuzziness=>2}}}]}}, :size=>200}},

Fuzzy Query 1: not working

      "bool": {
        "must": [
          {
              "fuzzy": {
                "description": {
                    # min_similarity: 0.4,
                    "value": args,
                    # prefix_length: 0,
                    "fuzziness": 2
                }
              },
            }]
        }

Fuzzy Query 1: not working

        "fuzzy": {
          "description": {
              # min_similarity: 0.4,
              "value": args,
              # prefix_length: 0,
              "fuzziness": 2
          }
        },
newBike
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  • By default the search query will try to match the search term with `ngram` tokens. Since there won't be any token as `Andoirddd` the result will fail. So try by adding a `search_analyzer` as ngram analyzer. else add `fuzzy` in search query. – Arun Prakash Mar 07 '16 at 12:29
  • @ArunPrakash it's no lucky, pls take a look my update. thank you – newBike Mar 07 '16 at 14:53

0 Answers0