#65 Searchkick and Elasticsearch

Summary

Add full text searching using Searchkick and Elasticsearch. Here I will show the steps involved in adding this search to an existing application and a sample of autocomplete functionality.
rails search performance 7:32

Resources

Summary

# Gemfile
gem 'searchkick'

# models/movie.rb
class Movie < ApplicationRecord
  searchkick word_start: [:title, :plot]

  def search_data
    {
      title: title,
      year: year,
      plot: plot
    }
  end
    
end

Reindex your model with

# Terminal
rake searchkick:reindex CLASS=Movie

# irb
Model.reindex

# movies_controller.rb
  def index
    search = params[:term].present? ? params[:term] : nil
    @movies = if search
      # Movie.where("title LIKE ? OR plot LIKE ?", "%#{search}%", "%#{search}%")
      Movie.search(search, where: { year: { gt: 2000 } })
    else
      Movie.all
    end
  end

  def autocomplete
    render json: Movie.search(params[:query], {
      fields: ["title^5", "plot"],
      match: :word_start,
      limit: 10,
      load: false,
      misspellings: {below: 5}
    }).map(&:title)
  end


# movies.js
$(document).on('turbolinks:load', function(){
  var movies = new Bloodhound({
    datumTokenizer: Bloodhound.tokenizers.whitespace,
    queryTokenizer: Bloodhound.tokenizers.whitespace,
    remote: {
      url: '/movies/autocomplete?query=%QUERY',
      wildcard: '%QUERY'
    }
  });
  $('#movies_search').typeahead(null, {
    source: movies
  });
})

# movies.css
span.twitter-typeahead .tt-menu,
span.twitter-typeahead .tt-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 1000;
  display: none;
  float: left;
  min-width: 160px;
  padding: 5px 0;
  margin: 2px 0 0;
  list-style: none;
  font-size: 14px;
  text-align: left;
  background-color: #ffffff;
  border: 1px solid #cccccc;
  border: 1px solid rgba(0, 0, 0, 0.15);
  border-radius: 4px;
  -webkit-box-shadow: 0 6px 12px rgba(0, 0, 0, 0.175);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.175);
  background-clip: padding-box;
}
span.twitter-typeahead .tt-suggestion {
  display: block;
  padding: 3px 20px;
  clear: both;
  font-weight: normal;
  line-height: 1.42857143;
  color: #333333;
  white-space: nowrap;
}
span.twitter-typeahead .tt-suggestion.tt-cursor,
span.twitter-typeahead .tt-suggestion:hover,
span.twitter-typeahead .tt-suggestion:focus {
  color: #ffffff;
  text-decoration: none;
  outline: 0;
  background-color: #337ab7;
}
.input-group.input-group-lg span.twitter-typeahead .form-control {
  height: 46px;
  padding: 10px 16px;
  font-size: 18px;
  line-height: 1.3333333;
  border-radius: 6px;
}
.input-group.input-group-sm span.twitter-typeahead .form-control {
  height: 30px;
  padding: 5px 10px;
  font-size: 12px;
  line-height: 1.5;
  border-radius: 3px;
}
span.twitter-typeahead {
  width: 100%;
}
.input-group span.twitter-typeahead {
  display: block !important;
  height: 34px;
}
.input-group span.twitter-typeahead .tt-menu,
.input-group span.twitter-typeahead .tt-dropdown-menu {
  top: 32px !important;
}
.input-group span.twitter-typeahead:not(:first-child):not(:last-child) .form-control {
  border-radius: 0;
}
.input-group span.twitter-typeahead:first-child .form-control {
  border-top-left-radius: 4px;
  border-bottom-left-radius: 4px;
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}
.input-group span.twitter-typeahead:last-child .form-control {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
  border-top-right-radius: 4px;
  border-bottom-right-radius: 4px;
}
.input-group.input-group-sm span.twitter-typeahead {
  height: 30px;
}
.input-group.input-group-sm span.twitter-typeahead .tt-menu,
.input-group.input-group-sm span.twitter-typeahead .tt-dropdown-menu {
  top: 30px !important;
}
.input-group.input-group-lg span.twitter-typeahead {
  height: 46px;
}
.input-group.input-group-lg span.twitter-typeahead .tt-menu,
.input-group.input-group-lg span.twitter-typeahead .tt-dropdown-menu {
  top: 46px !important;
}