Rails Ruby on Rails

Comments and changes to this ticket

• 

  Prem Sichanugrist (sikachu) October 17th, 2010 @ 05:09 PM

  • State changed from “new” to “wontfix”
  • Importance changed from “” to “Low”

  Hi,

  From your report, I think you are suggesting that Rails' to_json should have the same outcome as pure irb, right?

  I can confirm the above outcome on Rails 3.0.1. However, I don't think this is a bug, as this is the way Rails make sure that everything can be converted to JSON. Calling to_json on an object would actually calling to_hash or returning instance_values if it doesn't implements to_hash. Unintentionally, StandardError doesn't implements to_hash, and so you got the instance variables (or class variables, in this case) instead.

• 

  Prem Sichanugrist (sikachu) October 17th, 2010 @ 05:11 PM

  One more thing,

  and you saw inheritable_attributes in the list of attributes because that's actually a hash storing the list of class's inheritable attributes.

• You flagged this item as spam.
  

  Greg Hazel October 18th, 2010 @ 12:16 AM

  Why should Rails to_json work any differently than regular to_json for non-Rails objects?

  Also, as you can see from Marshal, there is no need to dump anything about inheritable_attributes in order to instantiate StandardError again.

  >> Marshal.dump(StandardError)
  => "\004\bc\022StandardError"
  >> Marshal.load(Marshal.dump(StandardError))
  => StandardError