ensure_logger_supports_rack_common_logger.rb

unless [:<<, :write, :flush].all? { |method| DEFAULT.respond_to?(method) }
  RAILS_DEFAULT_LOGGER.instance_eval do
    
    alias_method :<<, :info
    
    alias_method :write, :info
    
    def flush(*args, &block)
      # do nothing
    end
    
  end
end

environment.rb

# ...

Rails::Initializer.run do |config|
  # ...

  # set up Syslog logging:
  config.gem 'SyslogLogger', :version => '1.4.0'
  require 'syslog_logger'
  config.logger = RAILS_DEFAULT_LOGGER = SyslogLogger.new("my_rails_app.#{ENV['RAILS_ENV']}")
  config.middleware.use Rack::CommonLogger, RAILS_DEFAULT_LOGGER
  
  # ...
end