Epictetus

メモ - Mongoid による MongoHQ へのアクセスの実験

Rails app への Mongoid 導入

ruby/rails で MongoDB を使うときのメジャーな選択肢として MongoMapper, Mongoid がありますが、

Mongoid の方が後発、
Mongoid の方が 2011/6 の段階で rails 3 対応、ドキュメントなどが充実しているらしいなどの理由により、 Mogoid を使います。 (あまり詳しく調べてませんが、問題が発生したら乗り換えることもそんなに難しくないはず)

Proposal for Improving Mass Assignment

For a while, I have felt that the following is the correct way to improve the mass assignment problem without increasing the burden on new users. Now that the problem with the Rails default has been brought up again, it's a good time to revisit it.

Sign Allowed Fields

When creating a form with form_for, include a signed token including all of the fields that were created at form creation time. Only these fields are allowed.

To allow new known fields to be added via JS, we could add:

Patched ruby 1.9.3-p125 for 30% faster rails boot

What is?

This script installs a patched version of ruby 1.9.3-p125 with patches to make ruby-debug work again (#47) and boot-time performance improvements (#66 and #68), and runtime performance improvements (#83 and #84). It also includes the new backported GC from ruby-trunk.

Huge thanks to funny-falcon for the performance patches.

	require 'sinatra'
	require 'net/https'

	client_id = '2044a7773387915a7a2a'
	client_secret = 'secret'

	get '/' do
	html = <<-EOS
	<html>
	<head>

	# use node v0.7.4
	nvm 0.7.4

	# create a gemset for a sample application.
	rvm gemset create scaffold_test
	rvm gemset use scaffold_test

	# install rails
	gem install rails

	Parallel.each(last_infos, :in_threads => 4){ \|last_info\|
	begin
	Proc.new do
	timeout(20) do
	Peercast::Screenshot.new(last_info.url).download_to(download_path)
	end

	last_info.capture = download_path
	last_info.save
	end.retry(:max => 3, :accept_exception => Timeout::Error, :logger => Logger.new(STDERR))

	require 'eventmachine'

	# most of code is from [thin-glazed](https://github.com/freelancing-god/thin-glazed)

	class HttpClient < EventMachine::Connection
	attr_reader :proxy

	def initialize(proxy)
	@proxy = proxy
	@connected = EventMachine::DefaultDeferrable.new

	javax.servlet.ServletContext log: unable to create shared application instance
	org.jruby.rack.RackInitializationException: load error: ./config/boot -- java.lang.SecurityException: Google App Engine does not support Runtime.exec
	from ./config/environment.rb:7
	from ./config/environment.rb:13:in `require'
	from config.ru:13

	## Rails 3.2.1 (January 26, 2012) ##

	* 変更なし