require 'yaml' env = ENV['RAILS_ENV'] || 'development' config = YAML.load_file(File.expand_path(env == "test" ? "../example.application.yml" : "../application.yml", __FILE__)) ENV.each do |key,value| if key.match(/^OSM_(.*)$/) Object.const_set(Regexp.last_match(1).upcase, value) end end config[env].each do |key,value| unless Object.const_defined?(key.upcase) Object.const_set(key.upcase, value) end end