You're screwed if in your rails application you still want to use standard json library, not the rails one. I had to write a small patch to get Rails hands off my jsonified classes.
Here's how STANDARD JSON library works:
1. In your class you need define 2 methods:
to_json and self.json_create
2. Convert to json: json_string = your_instance.to_json
Parse json: JSON.parse(json_string)
RAILS evil deed
In case of RAILS, the to_json function is hacked(monkey patched) where they call ActiveSupport's json encode.
The evil code is here:
So, this file loads standard json library and then rewrites to_json on all ruby core objects.
SOLUTION. Make converting (to_json) work. This will serialize properly to json.
In your jsonifiable classes additionally to to_json, define as_json function.
'json_class' => self.class.name,
'a' => json_data