Example usage of the Ruby SDK

After installing the Ruby SDK, import the Optimizely library, get your project's datafile, and create a client. Use the client to evaluate flag rules like A/B tests and flag deliveries.

This example walks through the following three key steps:

1. Evaluate a flag with the key product_sort using the decide method. This also sends a decision event to Optimizely to record that the user was exposed to the experiment.

2. Run code based on the flag result. The SDK evaluates your flag rules and determines which variation the user is in. You can either:

   • Check the flag's enabled state and read a configuration variable (sort_method) to determine which experience the user gets.
   • Check the flag variation directly and run the corresponding control or treatment code.

3. Track a conversion event called purchased to measure the experiment's impact. The track_event method ties the purchase back to the A/B test and sends it to Optimizely so it displays on your Experiment Results page.

# frozen_string_literal: true

require 'optimizely/optimizely_factory'

# Initialize an Optimizely client
optimizely_client = Optimizely::OptimizelyFactory.default_instance('your_sdk_key')

# create a user and decide a flag rule (such as an A/B test) for them
user = optimizely_client.create_user_context('user123')

decision = user.decide('product_sort')

variation_key = decision.variation_key
if variation_key.nil?
  puts "[decide] error: #{decision.reasons}"
  exit(1)
end

# execute code based on flag variable
enabled = decision.enabled

if enabled
  # get flag variable values
  decision.variables['sort_method']
end

# or execute based on variation
if variation_key == 'control'
  # Execute code for variation A
elsif variation_key == 'treatment'
  # Execute code for variation B
end

user.track_event('purchased')