apipie.rb

Apipie.configure do |config|
 reload_controllers = Rails.env.development?
end

press_controller.rb

class API::V1::PressController < API::V1::BaseController
 # All Doc code here
 include PressDoc
 
 def index
  respond_with Press.all
 end

 #... NO DOC CODE HERE 
end

press_doc.rb

module PressDoc
 extend ActiveSupport::Concern

 api :GET, '/press', "List Press"
 example_json FactoryGirl.build_list(:press, 2).map{
  |a| a.attributes.except("created_at", "updated_at").merge("id" => 1 + rand(1000))
 }
 def index; end # Define an empty action, to let apipie know where to associate the documentation
 
 api :GET, '/press/:id', "Show a Press"
 param :id, Integer, required: true
 example_json FactoryGirl.build(:press).attributes.merge(
  "id" => 1, "created_at" => Time.current, "updated_at" => Time.current
 )
 def show; end
 
 # etc..
end