Rails3.0.x -> 3.2.x (´∀｀∩)↑age↑ ref: http://qiita.com/items/b9c38281147c4cbce183

development.rb

config.active_record.mass_assignment_sanitizer = :strict
config.active_record.auto_explain_threshold_in_seconds = 0.5

log

DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /Users/me/myapp/config/environment.rb:6)

test.rb

config.assets.allow_debugging = true

xxx.rb

#  config.action_view.debug_rjs             = true