Vanity is an Experiment Driven Development framework for Rails.
A/B Testing With Rails (In 5 Easy Steps)
Step 1: Start using Vanity in your Rails application:
Rails 2.x configuration
Rails::Initializer.run do |config| gem.config "vanity" config.after_initialize do require "vanity" end end
Rails 3 configuration
Add to your Gemfile:
If using a relational database, run the generator and migrations to create the database schema:
$ rails generate vanity $ rake db:migrate
Add to your application controller:
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 metrics :signups end NOTE: If using a metric as above ("signups"), there needs to be a corresponding ruby file for that metric. Inside the "experiments" directory create a "metrics" directory with a file called "signup.rb". The contents of the file can describe the signup metric, refer to the "Metrics" Vanity documentation page for an example.
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! :signups redirect_to @acccount else render action: :offer end end end
Step 5: Check the report:
vanity report --output vanity.html
There is currently an issue with report generation. The vanity-talk Google Group has a couple posts that outline the issue for now. This is one of the posts: http://groups.google.com/group/vanity-talk/browse_thread/thread/343081a72a0cefb6 If you are collecting data (in development you need to opt-in to this by setting Vanity.playground.collecting = true in environments/development.rb) you can view experiment results with the vanity dashboard instead of the report. The vanity dashboard setup instructions with Vanity work for Rails 3.x except the route is different. A Rails 3.x-style route would look like this: `match '/vanity(/:action(/:id(.:format)))', :controller=>:vanity`
Set Vanity.playground.add_participant_path = '/path/to/vanity/action', this should point to the add_participant path that is added with Vanity::Rails::Dashboard, make sure that this action is available to all users
Add <%= vanity_js %> to any page that needs uses an ab_test. vanity_js needs to be included after your call to ab_test so that it knows which version of the experiment the participant is a member of. The helper will render nothing if the there are no ab_tests running on the current page, so adding vanity_js to the bottom of your layouts is a good option. Keep in mind that if you call use_js! and don't include vanity_js in your view no participants will be recorded.
Fork the project
Please use a topic branch to make your changes, it's easier to test them that way
Fix, patch, enhance, document, improve, sprinkle pixie dust
At minimum run rake test, if possible, please run rake test:all
Tests. Please. Run rake test, of if you can, rake test:all
Send a pull request on GitHub
Original code, copyright of Assaf Arkin, released under the MIT license.
Documentation available under the Creative Commons Attribution license.
For full list of credits and licenses: vanity.labnotes.org/credits.html.