gistfile1.txt

A few people asked about my issue with Rails 3 so here's the summary:

* Overriding to_json doesn't work anymore - render :json => User.all 
  seems to be ignoring any options defined in there.

* So I google around, there's a great explanation behind that, cool. 
  Lets move on and define as_json...

* Only it doesn't work if you try to call super with :only, :except, 
  or any of those options. Rails kept rendering all attributes.

* Things got worse when I added "json" to my Gemfile so I could test
  that API giving me trouble. to_json starts raising "wrong number of
  arguments" out of nowhere.

* Couldn't find any official doc for as_json.

* Ended up fixing my issue by reading the code. It's my fault I made
  the wrong assumption about as_json, although I still don't see why
  does it take arguments.