## app/models/rental_map.rb [ruby_on_rails]

class RentalMap
  MAP_NAME    = 'RentalMap'
  CSS_ID_NAME = 'RentalMap'

  # ..snip..
end

## app/models/property.rb [ruby_on_rails]

class Property < ActiveRecord::Base
  # ..snip..

  # javascript_map_marker_code() # {{{
  #
  # Returns a chunk of Javascript that creates a map marker for the property, and adds it to the map.
  #
  # Arguments:
  #   None
  #
  # Example Call:
  #   Property.find(:first).javascript_map_marker_code
  #
  def javascript_map_marker_code
    "marker#{id} = create_map_marker(#{latitude}, #{longitude}, #{id});
    #{RentalMap::MAP_NAME}.addOverlay(marker#{id});
    "
  end # }}}

  # ..snip..
end