A/B Tests

A flexible and extensible Drupal module for running A/B tests on your content types. This module empowers content teams to experiment with different content presentations while collecting valuable user interaction data.

What Does It Do?

The A/B Tests module enables you to:

• Present content using different view modes.
• Configure testing parameters for each content type.
• Collect and analyze user interaction data.
• Make data-driven decisions about content presentation.

Thanks to its pluggable architecture, you can easily extend the module to:

• Implement custom variant decision logic.
• Integrate with your preferred analytics platform.
• Add new tracking mechanisms.

Architecture

The module is built around two core concepts:

Deciders

Deciders determine which variant (view mode) to show to a user. They can consider factors such as:

• User session data.
• Time-based rules.
• Random distribution.
• Custom business logic.

Trackers

Trackers manage the reporting of:

• Which variant was shown to a user.
• How users interact with each variant.
• Custom events and metrics.

Configuration

Ignoring Configuration Export

The module provides an option to ignore A/B test configurations during configuration export. This is useful when you want to:

• Keep A/B test configurations out of version control
• Have different A/B test settings per environment
• Prevent A/B tests from being deployed/overritten across environments

To enable this feature, navigate to /admin/config/search/ab-tests and check the box.

When enabled, any third-party settings from the A/B Tests module will be excluded during configuration export and import.

Creating a Custom Decider

To create a custom decider, implement \Drupal\ab_tests\Plugin\AbVariantDecider\AbVariantDeciderInterface. The ab_variant_decider_timeout module provides a practical example:

1. Create a new plugin class in src/Plugin/AbVariantDecider
2. Add the plugin annotation
3. Implement the required methods

A well-designed decider should have:

• Clear decision logic.
• Configurable parameters.
• Proper session handling.
• Documentation of the decision process.

Creating a Custom Tracker

To create a custom tracker, implement \Drupal\ab_tests\Plugin\AbTestTracker\AbTestTrackerInterface. See the ab_analytics_tracker_example module for a comprehensive example:

1. Create a new plugin class in src/Plugin/AbTestTracker
2. Add the plugin annotation
3. Implement the required methods

A well-designed tracker should:

• Handle tracking initialization cleanly.
• Provide clear event reporting.
• Include proper error handling.
• Document the tracking implementation.

Contributing

We welcome contributions in the form of:

• Bug fixes.
• Documentation improvements.

Please follow the Drupal coding standards when submitting your contributions.

Maintainers

This module is maintained by the Lullabot team. For support, please open an issue in the project's issue queue.