---
title: Ruby-SDK - 2.0.0-beta1
slug: feature-experimentation/release-notes/ruby-sdk-2-0-0-beta1
createdAt: 2026-07-20T15:44:33.120Z
---

March 29th, 2018

This major release of the Optimizely SDK introduces APIs for Feature Management. It also introduces some breaking changes listed below.

### New Features

- Introduces the `is_feature_enabled` API to determine whether to show a feature to a user or not.

```ruby
enabled = optimizely_client.is_feature_enabled('my_feature_key', 'user_1', user_attributes)
```

- You can also get all the enabled features for the user by calling the following method which returns a list of strings representing the feature keys:

```ruby
enabled_features = optimizely_client.get_enabled_features('user_1', user_attributes)
```

- Introduces Feature Variables to configure or parameterize your feature. There are four variable types: `Integer`, `String`, `Double`, `Boolean`.

```ruby
string_variable = optimizely_client.get_feature_variable_string('my_feature_key', 'string_variable_key', 'user_1')
integer_variable = optimizely_client.get_feature_variable_integer('my_feature_key', 'integer_variable_key', 'user_1')
double_variable = optimizely_client.get_feature_variable_double('my_feature_key', 'double_variable_key', 'user_1')
boolean_variable = optimizely_client.get_feature_variable_boolean('my_feature_key', 'boolean_variable_key', 'user_1')
```

### Breaking changes

- The `track` API with revenue value as a stand-alone parameter has been removed. The revenue value should be passed in as an entry of the event tags map. The key for the revenue tag is `revenue` and will be treated by Optimizely as the key for analyzing revenue data in results.

```ruby
event_tags = {
  'revenue'=> 1200
}

optimizely_client.track('event_key', 'user_id', user_attributes, event_tags)
```

[https://github.com/optimizely/ruby-sdk/releases/tag/v2.0.0.beta1](https://github.com/optimizely/ruby-sdk/releases/tag/v2.0.0.beta1)