How do I get rid of blank error page with "You are not allowed to access this action." in decl_auth in Rails 3?

The authorization works nicely, but when a user accesses an action/controller that they don't have access to, they see:

You are not allowed to access this action

The page is blank.

How do I c开发者_高级运维ustomize what the user sees ? Either by replacing the message altogether, to replacing the page with a new page altogether ?

How would I do this ?

Thanks.

To handle this, I added a permission_denied method in the ApplicationController:

def permission_denied
  flash[:notice] = "Sorry, you are not authorized to access that page." 
  redirect_to root_url
end

See last section of this Railscast: http://asciicasts.com/episodes/188-declarative-authorization