app/controllers/swagger_controller.rb
class SwaggerController < ApplicationController
def respond
if Rails.env.development? || Rails.env.test?
render inline: Rails.root.join('swagger', derived_path).read
else
head :not_found
end
end
private
def derived_path
params[:path] ||= 'index.html'
path = Rack::Utils.clean_path_info(params[:path])
path << ".#{Rack::Utils.clean_path_info(params[:format])}" unless path.ends_with?(params[:format].to_s)
path
end
end