Who contributed to Rails on May 28, 2026?

3 developers shipped this update, including Edilbek, matthewd, and bhumi1102.

What were the notable Rails updates?

Simplify more ```activerecord``` tests with ```NotificationAssertions``` helpers, Only set Postgres timezone when needed, and [RF-Docs] [ci-skip] Active Storage Guide.

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RAILS TEST SUITE GETS CLEANER, POSTGRES TIMEZONE FIX LANDS

By RepoJournal · Filed 06:00 UTC on May 28, 2026 · About Rails

3 people shipped this

Edilbek @Edilbek 1 cited

matthewd @matthewd 1 cited

bhumi1102 @bhumi1102 1 cited

Rails core just shipped a wave of test infrastructure improvements and a critical Postgres timezone handling fix that eliminates edge cases in parameter status checks.

The test cleanup effort continues with `NotificationAssertions` helpers now applied across `activerecord` tests, removing manual `ActiveSupport::Notifications.subscribe` patterns that made test code harder to follow [1]. This follow-up to earlier notification assertion work consolidates testing patterns in `asynchronous_queries_test.rb`, `connection_pool_test.rb`, and `relation/load_async_test.rb`. Meanwhile, the Postgres adapter got smarter about timezone handling: the fix ensures timezones are only set when actually needed, with case-insensitive treatment of `variables` keys to work cleanly with parameter status checks [2]. On the documentation side, the Active Storage guide received a significant overhaul that restructures content for better coherence, clarifies the distinction between proxy and redirect modes, and corrects confusing text about how `.attach` works with `has_many_attached` associations [3]. These are the kinds of foundational improvements that pay dividends across every Rails app.

Action items

→ Review test patterns in your activerecord test suite and adopt NotificationAssertions where applicable rails/rails [plan]
→ Check Active Storage guide for the clarifications on proxy vs. redirect modes and processed option rails/rails [monitor]
→ If using Postgres with timezone-aware columns, verify behavior after the parameter status fix merges to main rails/rails [monitor]

References

[1] Simplify more ```activerecord``` tests with ```NotificationAssertions``` helpers ↗ rails/rails
[2] Only set Postgres timezone when needed ↗ rails/rails
[3] [RF-Docs] [ci-skip] Active Storage Guide ↗ rails/rails

Quick answers

What shipped in Rails on May 28, 2026?: Rails core just shipped a wave of test infrastructure improvements and a critical Postgres timezone handling fix that eliminates edge cases in parameter status checks. In total, 14 commits and 7 pull requests landed.
Who contributed to Rails on May 28, 2026?: 3 developers shipped this update, including Edilbek, matthewd, and bhumi1102.
What were the notable Rails updates?: Simplify more ```activerecord``` tests with ```NotificationAssertions``` helpers, Only set Postgres timezone when needed, and [RF-Docs] [ci-skip] Active Storage Guide.

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