gistfile1.rb

### elasticsearch_searchable.rb ###

require 'active_support/concern'

module ElasticsearchSearchable

  extend ActiveSupport::Concern
  
  included do
    require 'elasticsearch/model'
    include Elasticsearch::Model
    include Elasticsearch::Model::Indexing
    
    mapping do
      #write some code
    end
    
    def self.search(query)
      #write some more code
    end
  end

end

### user.rb ###

# Elasticsearch configuration
include ElasticsearchSearchable
# index_name "users" <-- This value is inferred automatically by the model name
settings index: { number_of_shards: 1 }