Rack Warden: how can I access the message passed to the fail! method?

Question

When failing an authentication strategy in Warden, a message can be passed to the fail! method. How can I access this message in my default failure application action such that I can display it in a flash message? I tried request.env['warden'].message, but after looking at the code for Warden::Proxy this variable is only set for winning strategies. Thoughts?

Answer 1

Perhaps a different way of failing strategies (from recent documentation), is to use throw(:warden, :foo => 'bar'). Anything you throw with will be available in your failure application through request.env['warden.options'], including a string of the desired url as well. HTH

Answer 2

When using the fail or fail! methods, you can obtain the failure message from the environment warden object.

Example:

def unauthenticated
  flash[:alert] = env["warden"].message unless env["warden"].message.blank?
end

http://www.rubydoc.info/github/hassox/warden/Warden/Proxy#message-instance_method