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

get '/search' do

  results = { }

  begin
    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 } } }
  rescue Exception => error
    puts error.inspect
    results = { "hits" => {"hits" => [ {"_id" => Item.first.id, "_score" => 2 }, {"_id" => Item.last.id, "_score" => 1 } ]}}
  end

  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