Add geocoder methods to a poro

geocodeable.rb

# This code creates an object that is sortable
# by it's distance to a particular event
# the event and friend code isn't included
# but both objects have latitude and longitude accessors

# you need the geocoder gem in your gemfile.
class FriendEvent
  require 'geocoder/stores/base'
  include Comparable
  include Geocoder::Store::Base
  attr_reader :event, :friend
  def initialize(event, friend)
    @event = event
    @friend = friend
  end

  def latitude
    @friend.lat
  end

  def longitude
    @friend.long
  end

  def proximity
    return Float::INFINITY if latitude.nil? || longitude.nil?
    self.distance_to(@event.venue) #here is the method that i'm using from geocoder
  end

  def <=>(anOther)
    return 0 if @event.venue.latitude.nil? || @event.venue.longitude.nil?
    proximity <=> anOther.proximity
  end

  def self.geocoder_options
    #needed by the geocoder gem methods
    #poro's not really supported well...
    { units: :km,
      latitude: :latitude,
      longitude: :longitude
    }
  end
end