Notify deprecations via ExceptionNotifier

config-environments-production.rb

ActiveSupport::Deprecation.behavior = DeprecationNotifier.new

deprecation_notifier.rb

require 'ostruct'

class DeprecationNotifier
  class DeprecationError < StandardError
    def initialize message, callstack
      super message
      set_backtrace callstack
    end
  end

  def call message, callstack
    # Keep the default behavior at work
    ActiveSupport::Deprecation.default_behavior(message, callstack)

    # Let's mimic the controller exception :\
    exception = DeprecationError.new(message, callstack)
    request   = OpenStruct.new(:env => {}, :session_options => {})

    ExceptionNotification::Notifier.deliver_exception_notification(exception, self, request, data)
  end
end