Ruby on Rails: The Push Toward Ractor-Safe Rendering
Rails continues a multi-PR effort to make template rendering and core Active Record structures Ractor-safe, while separate fixes address a prepared statements bug and query predicate customization for attribute types.
Duration: PT2M37S
Episode overview
This episode is a short developer briefing from Ruby on Rails.
It explains recent repository work in plain language.
- Show: Ruby on Rails
- Published: 2026-08-06T13:15:13Z
- Audio duration: PT2M37S
Transcript excerpt
This excerpt keeps the crawler page concise. Listen to the episode or use the RSS feed for the full update.
Good morning, it's August 6th, 2026, and this is Ruby on Rails.
The clearest thread today is Ractor safety in Action View and Active Record. Multiple PRs from the Shopify team are chipping away at the same wall: making Rails work inside non-main Ractors.
Etienne Barrie's PR 58281, now merged, moved the Lookup Context's details key caches to Ractor-local storage, requiring a newer concurrent-ruby version to avoid isolation errors. That set up a follow-on, PR 58390, which makes template lookup itself Ractor-safe by fixing default procs and moving a mutex to…
Second theme: correctness fixes in the database layer. PR 58373, merged, fixes a real bug where disabling prepared statements didn't actually stop Postgres from issuing named prepares on every `find` and `find_by` call — a problem specifically for apps running behind transaction-pooling proxies where those names…
Worth noting on its own: PR 58135 finally lands query predicate hooks for Active Record types, letting types like binary-stored UUIDs control how they're rendered in where clauses — work picked up from an earlier stalled PR and refined through review.
What's next: watch for the Ractor-safety series to continue, and if you…
Nearby episodes from Ruby on Rails
- The Ractor Safety Sweep
- Composite Keys and Concurrency Fixes Converge
- Attribute Aliases and Ractor Safety Come Home to Roost
- Weekly Recap - Ractor Readiness and Database Layer Cleanup
- Schema Building and Ractor Safety Cleanup
- Anonymous Classes Break Things
- Cleaning Up Active Record's Bind Parameter Plumbing
- Ractor Safety and the Great Insert Refactor