old-ribica/front-api/controllers/search.rb

get '/search' do
  es_client = Elasticsearch::Client.new log: true
  q = params[:q]

  # for now we do the basic query
  results = es_client.search index: 'ribica', type: 'items', body: { query: { match: { _all: q } } }
  ids = results["hits"]["hits"].map do |r|
   r["_id"]
  end

  ids_with_score = {}
  results["hits"]["hits"].each do |r|
   ids_with_score[r["_id"].to_i] = {:score => r["_score"], :item => nil}
  end

  if ids.length > 0
      res = Item.where(:id => ids).to_a
      # make sure we have correct relevance order, since `where in` does not guarantee order
      res.each do |ii|
          ids_with_score[ii.id][:item] = ii
      end
      final = []
      ids_with_score.each do |k,v|
          final << v
      end
      final.sort_by! {|v| -v[:score]}

      final = final.map do |f|
          f[:item]
      end
      prepare_items_for_mass_display(final)
  else
      [].to_json
  end
end