Rinaldi Fonseca rinaldifonseca

Using ActiveSupport::Dependencies outside of rails seems just as fast as doing manual requires. I've found this out by replacing hundreds of requires in a unit tested code base with ActiveSupport::Dependencies without any change to the time it takes to run the test suite.

Using ActiveSupport::Dependencies also allows you to have circular depedencies like class Foo::Bar in foo/bar.rb and class Foo in foo.rb that points to Foo::Bar in it's class definition (like in a rails validation).

The classical way of solving this without ActiveSupport::Dependencies is to do:

# foo/bar.rb
class Foo
 class Bar

	require 'net/ftp'

	CONTENT_SERVER_DOMAIN_NAME = "one-of-the-ftp-server.thought-sauce.com.hk"
	CONTENT_SERVER_FTP_LOGIN = "saucy-ftp-server-login"
	CONTENT_SERVER_FTP_PASSWORD = "saucy-ftp-server-password"


	# LOGIN and LIST available files at default home directory
	Net::FTP.open(CONTENT_SERVER_DOMAIN_NAME, CONTENT_SERVER_FTP_LOGIN, CONTENT_SERVER_FTP_PASSWORD) do \|ftp\|
	files = ftp.list

	#Version 1
	class Publisher
	def initialize(page)
	@page = page
	end

	def publish
	# do things that publish @page
	end
	end

	require 'resolv'

	class EmailValidator < ActiveModel::EachValidator
	def validate_each(record, attribute, value)
	if Resolv::DNS.new.getresources(value.split("@").last, Resolv::DNS::Resource::IN::MX).empty?
	record.errors[attribute] << (options[:message] \|\| "does not have a valid domain")
	end
	rescue Resolv::ResolvError, Resolv::ResolvTimeout
	record.errors[attribute] << (options[:message] \|\| "does not have a valid domain")
	end

	require 'rubygems'
	require 'open-uri'
	require 'csv'

	#remote
	def read(url)
	CSV.new(open(url), :headers => :first_row).each do \|line\|
	puts line
	puts line[0].force_encoding('iso-8859-1').encode('utf-8')
	puts line['FEB11']

	require './interface'
	puts to_strings(->(limit) {
	->(lst) {
	->(f) {
	->(f) {
	->(g) {
	->(n) {
	f.(g.(g)).(n)
	}
	}.(->(g) {

	mode = ENV["SPEC"] \|\| "full"
	require_relative "spec_helper_#{mode}"

	def collection_for(field)
	field.fetch(:options){[]}.map{\|option\| [option["name"], option["name"]]}
	end