Rails Application Config loader

app_config.rb

# gem 'hashie'
begin
  app_name = Rails.application.class.parent_name.downcase
  file_path = File.join(Rails.root,'config',"#{app_name}.yml")
  app_config = Hashie::Mash.new(YAML.load_file(file_path)).freeze
rescue Errno::ENOENT
  raise "Can not find #{app_name.upcase} config file: #{file_path}"
rescue Psych::SyntaxError
  Rails.logger.error "Can not parse #{app_name.upcase} config file: #{file_path}:"
  puts "Can not parse #{app_name.upcase} config file: #{file_path}"
  raise
end
Rails.application.config.send(:"#{app_name}=", app_config)