app/controllers/snapshots_controller.rb
class SnapshotsController < ApplicationController
if Rails.env.development? || Rails.env.test?
layout :which_layout
def show
tpl = params[:snap]
tpl = tpl.gsub Rails.root.to_s, ''
render file: tpl
end
def which_layout
"snapshots/#{params[:layout] || "default"}"
end
end
end