DRY acts_as_api + custom rails responders integration

acts_as_api.rb

# config/initilizers/acts_as_api.rb

ActsAsApi::Config.include_root_in_json_collections = false

api_responder.rb

class ApiResponder < ActionController::Responder
  def to_json
    render :json => resource.as_api_response(options[:api_template] || :default)
  end
end

post.rb

class Post < ActiveRecord::Base
  acts_as_api
  api_accessible :default do |t|
    t.add :title
    t.add :content
  end

  api_accessible :short do |t|
    t.add :title
  end
end

post_controller.rb

class PostsController < ApplicationController
  respond_to :json

  self.responder = ApiResponder

  def index
    @posts = Post.all
    respond_with(@posts, :api_template => :short)
  end

  def show
    @post = Post.find(params[:id])
    respond_with(@post)
  end
end

test.txt

GET /posts.json
=> 
  [
    {"title": "..."}, 
    {"title", "..."}
  ]


GET /posts/1.json
=>

  {
    "title": "...",
    "content": "..."
  }

wrap_parameters.rb

# config/initializers/wrap_parameters.rb

ActiveSupport.on_load(:active_record) do
  self.include_root_in_json = false
end