Question

I have a user model with Paperclip for avatars and I need to be able to return the image_url for each size (small, medium, large) using RABL.

In mongoid model i would simply do self.avatar(:original) but now nothing works, I just get an empty response in the attachment

"user" : {
  "id" : "50b204e10eae9c55fa000028",
  "paperclip::attachment" : {},
  "name" : "My Name"
}

/models/user.rb

has_mongoid_attached_file :avatar,
    :styles => {
      :original => ['1000x1000>', :jpg],
      :small    => ['64x64#',           :jpg],
      :medium   => ['250x250',    :jpg],
      :large    => ['500x500>',   :jpg]
    }

/views/posts/base.json.rabl

child :user do
    attributes :id, :name

    child :avatar do
        attributes :original
    end
end

Answer 1

Try this:

child :user do
  attributes :id, :name

  node :avatar_original do |u|
    u.avatar(:original)
  end
end