tire-record.rb

class Test < ActiveRecord::Base
  attr_accessible :description, :name, :latitude, :longitude

  include Tire::Model::Search
  include Tire::Model::Callbacks

  index_name "test-app"

  tire do
    mapping do
      indexes :_id, index: :not_analyzed
      indexes :name
	    indexes :description
	    indexes :location, :type => 'geo_point', :lat_lon => true
	  end
  end

  def location
    [latitude, longitude].join(',')
  end

  def to_indexed_json
    {
      :id => self.id,
      :description => self.description,
      :name => self.name,
      :location => location
    }.to_json
  end
end