raisable_redirections.rb

module RaisableRedirections

  def self.included(other)
    other.send(:around_filter, :handle_raisable_redirections)
  end

protected
  def raise_redirect_to(*args)
    raise Redirect.new(*args)
  end

private
  class Redirect < Exception
    attr_reader :redirect_params
    def initialize(*args)
      @redirect_params = args
    end
  end

  def handle_raisable_redirections
    begin
      yield
    rescue Redirect => r
      redirect_to *r.redirect_params
    end
  end

end