JSON attributes of the superclass are not rendered

[johnjohndoe]

I created a fresh project using your gem to create an inheritance model. I scaffolded two basic models:

Shape: area:integer, color:string # acts_as_superclass
Circle: radius:integer # inherits_from :shape

I changed the migrations and classes according to the README. Further, I seeded some test data:

Shape.create!(area: 33, color: "orange")
Circle.create!(area: 142, color: "dark green", radius: 4)

I would like to use the JSON version of the data. Therefore, I call their resource path:

http://localhost:3000/circles.json
http://localhost:3000/shapes.json

But what I get is not what I expect. Circle objects are render with the following attributes only: shape_id, radius, created_at, updated_at. Where are the properties of the superclass?

Update: Shape objects do not appear at all?!

[mitzimoto]

Here's how I solved this problem. Not sure if it's the "right" way, the "easiest" way or the most "rails-esque" way.

In my model (In this case, Circle), I overloaded the as_json() method like this:

    def as_json (options={})
        super(:methods => [:area, :color])
    end

Of course, that's a simplification, but hopefully it can point you in the right direction.

[johnjohndoe]

@mitzimoto I consider this as a workaround. However, I do not think I can use it in the final version. I am planning to use a JSON builder such as RABL or Boxer to handle more complex models. Such a custom change might interfer with their integration. Also, you probably agree on that you do not want to manually edit the list of attributes in the longterm.