Module: Geokit::ActsAsMappable::Glue::ClassMethods

Defined in:
lib/geokit-rails/acts_as_mappable.rb

Overview

:nodoc:

Instance Method Summary collapse

Instance Method Details

#acts_as_mappable(options = {}) ⇒ Object 



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# File 'lib/geokit-rails/acts_as_mappable.rb', line 14

def acts_as_mappable(options = {})
  metaclass = (class << self; self; end)

  include Geokit::ActsAsMappable

  cattr_accessor :through
  self.through = options[:through]

  if reflection = Geokit::ActsAsMappable.end_of_reflection_chain(self.through, self)
    metaclass.instance_eval do
      [ :distance_column_name, :default_units, :default_formula, :lat_column_name, :lng_column_name, :qualified_lat_column_name, :qualified_lng_column_name ].each do |method_name|
        define_method method_name do
          reflection.klass.send(method_name)
        end
      end
    end
  else
    cattr_accessor :distance_column_name, :default_units, :default_formula, :lat_column_name, :lng_column_name, :qualified_lat_column_name, :qualified_lng_column_name

    self.distance_column_name = options[:distance_column_name]  || 'distance'
    self.default_units = options[:default_units] || Geokit::default_units
    self.default_formula = options[:default_formula] || Geokit::default_formula
    self.lat_column_name = options[:lat_column_name] || 'lat'
    self.lng_column_name = options[:lng_column_name] || 'lng'
    self.qualified_lat_column_name = "#{table_name}.#{lat_column_name}"
    self.qualified_lng_column_name = "#{table_name}.#{lng_column_name}"

    if options.include?(:auto_geocode) && options[:auto_geocode]
      # if the form auto_geocode=>true is used, let the defaults take over by suppling an empty hash
      options[:auto_geocode] = {} if options[:auto_geocode] == true
      cattr_accessor :auto_geocode_field, :auto_geocode_error_message
      self.auto_geocode_field = options[:auto_geocode][:field] || 'address'
      self.auto_geocode_error_message = options[:auto_geocode][:error_message] || 'could not locate address'

      # set the actual callback here
      before_validation :auto_geocode_address, :on => :create
    end
  end
end