WADL Generator

# Gemfile
gem 'wadl_generator'

namespace 'api' do
  namespace 'v1' do
    get 'description.:format' => 'base#description'
    resources :posts, :only => [:index, :show]
  end
end

class Api::V1::BaseController < ApplicationController
  def description
    respond_to do |format|
      format.html do
        render :text => %q{<iframe src="http://apigee.com/<user>/embed/console/<name>" 
          width="100%" height="95%"></iframe>}
      end

      format.wadl do
        render :text => WADL::Generator.new(wadl_description, :apigee => true), 
          :content_type => 'application/xml'
      end
    end
  end

  private

  def wadl_description
    {
      :base => "#{request.url.gsub('/description.wadl', '')}",
      :resources => {
        'posts' => {
          :index => true,
          :index_formats => {
            :json => 'application/json',
          },
          :show => true,
          :show_formats => {
            :json => 'application/json',
            :html => 'application/html',
            :pdf => 'application/pdf',
          },
          :example_id => 28,
        },
        'categories' => {
          :index => true,
          :index_formats => {
            :json => 'application/json',
          },
        }
      }
    }
  end
end