Vanity is an Experiment Driven Development framework for Rails.

• Documentation: vanity.labnotes.org

• On github: github.com/assaf/vanity

• Vanity requires Ruby 1.9.1 or later, Redis 1.0 or later.

A/B Testing with Rails (in 5 easy steps)¶ ↑

Step 1: Start using Vanity in your Rails application:

gem.config "vanity"

And:

class ApplicationController < ActionController::Base
  use_vanity :current_user
end

Step 2: Define your first A/B test. This experiment goes in the file experiments/price_options.rb:

ab_test "Price options" do
  description "Mirror, mirror on the wall, who's the better price of all?"
  alternatives 19, 25, 29
end

Step 3: Present the different options to your users:

<h2>Get started for only $<%= ab_test :price_options %> a month!</h2>

Step 4: Measure conversion:

class SignupController < ApplicationController
  def signup
    @account = Account.new(params[:account])
    if @account.save
      track! :pricing_options # <- here be conversion!
      redirect_to @acccount
    else
      render action: :offer
    end
  end
end

Step 5: Check the report:

vanity --output vanity.html

Credits/License¶ ↑

Idea behind Experiment Driven Development: Nathaniel Talbott (blog.talbott.ws).

Copyright © 2009 Assaf Arkin, released under the MIT license.