# You can enable the Rails 4 support by either defining a # CANVAS_RAILS4=1 env var, or create an empty RAILS4 file in the canvas config dir if !defined?(CANVAS_RAILS3) if ENV['CANVAS_RAILS4'] CANVAS_RAILS3 = ENV['CANVAS_RAILS4'] != '1' else CANVAS_RAILS3 = !File.exist?(File.expand_path("../RAILS4", __FILE__)) end end