server_side_ab_testing 1.0.2

Improvements

• A/B testing logic is now strictly limited to the canonical node route (entity.node.canonical), preventing interference with administrative and editorial workflows.
• Fixed an issue where editing nodes participating in experiments could trigger unintended redirections.
• Redirects now correctly respect the current content language, ensuring proper behavior when using language switchers or accessing translated content.
• Canonical URLs are now language-aware for improved SEO consistency in multilingual setups.

New features

• Explicit preview mode for variants
  
  Users with the preview server-side ab variants permission can preview variant pages without redirection using:

  ?ab_preview=1

• Editorial bypass mode
  
  Introduced a new permission:

  bypass server-side ab testing

  Authenticated users with this permission can:

  • Browse variant pages without being redirected
  • Access main pages without being assigned to a variant

  This provides a smoother editorial experience when reviewing experiment content.

Behavior

• Public behavior remains unchanged:
  • Variant pages continue to redirect to the experiment main page
  • Users are assigned deterministically as before
• Preview mode:
  • Explicit (opt-in via query parameter)
  • Permission-based
  • Does not affect normal users
• Editorial bypass:
  • Applies only to authenticated users with the appropriate permission
  • Skips both assignment and redirection logic
  • Does not affect public traffic or caching behavior

Developer notes

• Multilingual handling now uses content language (LanguageInterface::TYPE_CONTENT) to ensure consistent behavior across translated routes.
• Experiment logic remains fully cache-aware and compatible with Dynamic Page Cache via the ab_testing cache context.
• No configuration changes required.