How to manually send an email using Rails' ExceptionNotifier Plugin

We have a situation in our rails app where we want to catch an exception and display a custom error message to the user, BUT we still want the exception notifier to fire, so we know all the detailed backtrace data etc, and can deal with it if it's a problem on our end.

Without Further ado, here is the code.

begin

    # b0rk b0rk b0rk

rescue => exception
    fake_params = { :id=>some_id, :etc=>'etc' }
    fake_request = ActionController::AbstractRequest.new
    fake_request.instance_eval do
        @env = { 'HTTP_HOST'=>'fake_host' }
        @parameters = fake_params
    end

    ExceptionNotifier.deliver_exception_notification( exception, ActionController::Base.new, fake_request )

Enjoy :-)