Example how to make search via Elasticsearch

concerns_searchable.rb

# models/concerns/searchable.rb
module Searchable
  extend ActiveSupport::Concern

  included do
    include Elasticsearch::Model
    include Elasticsearch::Model::Callbacks
    index_name [Rails.env, model_name.collection.gsub(/\//, '-')].join("_")
    
    after_touch() { __elasticsearch__.index_document }
  end
end

models_model_name.rb

# models/model_name.rb
class ModelName < ActiveRecord::Base
  include Searchable
  
  # if you want you can change Elasticsearch index settings
  settings do
    mapping do
      indexes :name, type: 'multi_field' do
        indexes :name, boost: 10
        indexes :sort, analyzer: 'sortable'# для сортировки
      end      
    end
  end
  
  ...
  
end

searcher_base_searcher.rb

# lib/company/project/searcher/base_seacher.rb
class Company::Project::Searcher::BaseSeacher
  #FIXME Name should be finished by ActiveRecord class name. 

  class << self
    def get_query(query)
      @get_query =  { filtered: {
                        query: {}
                      }
                  }
      query = query.to_s.strip
      query = query.gsub(/\s+/, " ")
      query = query.gsub(/-/, " ")
      if query.length.zero?
        @get_query[:filtered][:query][:match_all] = {}
      else
        @get_query[:filtered][:query][:multi_match] = {
                                            query:  query,
                                            operator: 'AND',
                                            fields: ["_all"]
                                          }
      end
      @get_query
    end

    def get_sort(sort)
      return {} if sort.blank?
      field     = sort.keys.first
      direction = sort.values.first
      { field => { order: direction, missing: :_last }}
    end

    def get_paging(paging)
      return { from: 0, size: 10 } if paging.blank?
      paging.slice(:from, :size)
    end

  end

  def initialize(query, options={})
    @search_settings =  {   
                           query:  Company::Project::Searcher::BaseSeacher.get_query(query),
                           sort:   Company::Project::Searcher::BaseSeacher.get_sort(options[:sort]),
                           highlight: {
                                   pre_tags: ['<em class="label label-highlight">'],
                                   post_tags: ['</em>'],

                                   fields: { "*" => { number_of_fragments: 0 } },
                            }
                        }
                        
    @search_settings.merge! Company::Project::Searcher::BaseSeacher.get_paging(options[:paging])
  end

  def get_records
    records = klass.search(@search_settings, preference: '_primary').records
    records
  end
  
  private
    def klass
      "::#{self.class.to_s.split("::").last}".constantize
    end

end

searcher_model_name.rb

# lib/company/project/searcher/model_name.rb
class Company::Project::Searcher::ModelName < Company::Project::Searcher::BaseSeacher
  #FIXME Name should be finished by ActiveRecord class name. 
  #Also you can change behaviour for specific ActiveRecord model 
end



#Search example:

Company::Project::Searcher::ModelName.new("Bla-bla-bla").get_records