rails/rails — pull request #4546 by carlosantoniodasilva (2012-01-19 20:27:40+00:00)
Title: Use performed? instead of checking for response_body

`performed?` is back, so we can make use of it internally.

* Check for performed? instead of response_body
* Change performed? to return a boolean
* Refactor AC::Metal#response_body= to reuse variable