Change skin of Chrome developer tools

เปลี่ยน Skin ให้ Chrome Developer Tools

1)  เปิด Chrome's user stylesheet's directory  

Windows: "C:\Users\**Your username**\AppData\Local\Google\Chrome\User Data\Default\User StyleSheets\"  

Mac: "~/Library/Application Support/Google/Chrome/Default/User StyleSheets/"  

Linux: "~/.config/chrome/Default/User StyleSheets/" 

2)  Download Skin : Ruby Blue
3)  วาง Custom.css ทับของเดิม

ทีมา : https://plus.google.com/115133653231679625609/posts/UZF34wPJXsL

Rails : Error omniauth + rack

Error following below
[FATAL]
NoMethodError (undefined method `include?' for nil:NilClass):
  omniauth (1.1.0) lib/omniauth/builder.rb:47:in `call'
  actionpack (3.2.2) lib/action_dispatch/middleware/best_standards_support.rb:17:in `call'
  rack (1.4.0) lib/rack/etag.rb:23:in `call'
  ....

Solution
  fixed  in gem with rack, '~> 1.4.0'

rails 3: Rails logger outside controller and model

ทำอย่างไร ถ้าต้องการเขียน log นอก controller และ model ?

ใช้ Rails.logger.info "Some debugging info I want to see in my development log."

อ้างอิง :http://jasonseifer.com/2009/08/10/using-the-rails-logger-outside-of-models-and-controllers