A half-finished rake task to output static error pages from dynamic pages

assets.rake

  desc "Generate static error page HTML"
  task :generate_error_pages => :environment do
    av = ActionView::Base.new(Rails::Configuration.new.view_path)
    av.class_eval do
      include Rails.application.routes.url_helpers # brings ActionDispatch::Routing::UrlFor
      include ActionView::Helpers::TagHelper
      include LayoutHelper

      def cache(name = {}, options = nil, &block)
        yield
      end

      def protect_against_forgery?
        false
      end

      #def config
      #  Class.new do
      #    def assets_dir
      #      # /home/rohan/dev/greatvenue_website/public
      #      '/home/rohan/dev/greatvenue_website/public'
      #    end
      #    def asset_path
      #      ''
      #    end
      #    def asset_host
      #      ''
      #    end
      #
      #    def perform_caching
      #      false
      #    end
      #  end.new
      #end
    end

    # Copied from ApplicationController::load_globals
    av.assign({:list_signup_simple => ListSignup.new(:interests => Gibbon::FRIENDS_GROUPS_INTEREST_GROUPS[1])})


    f = File.new("public/500.html", 'w')
    f.puts(av.render(:template => "errors/500.html.haml", :layout => 'layouts/one_col'))
    f.close
  end