Question

I would like to send e-mail when having an exception in my application and render the regular 500 page. I could not find how to perform the 500 page render:

class ApplicationController < ActionController::Base
  rescue_from StandardError do
     send_email_of_error
     # what goes here? 
  end

  ...
end

Answer 1

Raising the exception again will likely to what you want:

rescue_from StandardError do |exception|
  send_email_of_error
  raise exception
end

You could also call render to render your own page, the docs have an example doing this.

But why reinvent the wheel? The exception notifier gem already does this and is customizable and tested.