Active Support

• Fix Enumerable#sole to return the full tuple instead of just the first element of the tuple.

  Olivier Bellone

• Fix parallel tests hanging when worker processes die abruptly.

  Previously, if a worker process was killed (e.g., OOM killed, kill -9) during parallel test execution, the test suite would hang forever waiting for the dead worker.

  Joshua Young

• ActiveSupport::FileUpdateChecker does not depend on Time.now to prevent unnecessary reloads with time travel test helpers

  Jan Grodowski

• Fix ActiveSupport::BroadcastLogger from executing a block argument for each logger (tagged, info, etc.).

  Jared Armstrong

• Fix ActiveSupport::HashWithIndifferentAccess#transform_keys! removing defaults.

  Hartley McGuire

• Fix ActiveSupport::HashWithIndifferentAccess#tranform_keys! to handle collisions.

  If the transformation would result in a key equal to another not yet transformed one, it would result in keys being lost.

  Before:

  >> {a: 1, b: 2}.with_indifferent_access.transform_keys!(&:succ)
  => {"c" => 1}
  

  After:

  >> {a: 1, b: 2}.with_indifferent_access.transform_keys!(&:succ)
  => {"c" => 1, "d" => 2}
  

  Jason T Johnson, Jean Boussier

• Fix ActiveSupport::Cache::MemCacheStore#read_multi to handle network errors.

  This method specifically wasn't handling network errors like other codepaths.

  Alessandro Dal Grande

• Fix Active Support Cache fetch_multi when local store is active.

  fetch_multi now properly yield to the provided block for missing entries that have been recorded as such in the local store.

  Jean Boussier

• Fix execution wrapping to report all exceptions, including Exception.

  If a more serious error like SystemStackError or NoMemoryError happens, the error reporter should be able to report these kinds of exceptions.

  Gannon McGibbon

• Fix RedisCacheStore and MemCacheStore to also handle connection pool related errors.

  These errors are rescued and reported to Rails.error.

  Jean Boussier

• Fix ActiveSupport::Cache#read_multi to respect version expiry when using local cache.

  zzak

• Fix ActiveSupport::MessageVerifier and ActiveSupport::MessageEncryptor configuration of on_rotation callback.

  verifier.rotate(old_secret).on_rotation { ... }
  

  Now both work as documented.

  Jean Boussier

• Fix ActiveSupport::MessageVerifier to always be able to verify both URL-safe and URL-unsafe payloads.

  This is to allow transitioning seemlessly from either configuration without immediately invalidating all previously generated signed messages.

  Jean Boussier, Florent Beaurain, Ali Sepehri

• Fix cache.fetch to honor the provided expiry when :race_condition_ttl is used.

  cache.fetch("key", expires_in: 1.hour, race_condition_ttl: 5.second) do
    "something"
  end
  

  In the above example, the final cache entry would have a 10 seconds TTL instead of the requested 1 hour.

  Dhia

• Better handle procs with splat arguments in set_callback.

  Radamés Roriz

• Fix String#mb_chars to not mutate the receiver.

  Previously it would call force_encoding on the receiver, now it dups the receiver first.

  Jean Boussier

• Improve ErrorSubscriber to also mark error causes as reported.

  This avoid some cases of errors being reported twice, notably in views because of how errors are wrapped in ActionView::Template::Error.

  Jean Boussier

• Fix Module#module_parent_name to return the correct name after the module has been named.

  When called on an anonymous module, the return value wouldn't change after the module was given a name later by being assigned to a constant.

  mod = Module.new
  mod.module_parent_name # => "Object"
  MyModule::Something = mod
  mod.module_parent_name # => "MyModule"
  

  Jean Boussier

• Fix a bug in ERB::Util.tokenize that causes incorrect tokenization when ERB tags are preceeded by multibyte characters.

  Martin Emde

Active Model

• Fix has_secure_password to perform confirmation validation of the password even when blank.

  The validation was incorrectly skipped when the password only contained whitespace characters.

  Fabio Sangiovanni

• Handle missing attributes for ActiveModel::Translation#human_attribute_name.

  zzak

• Fix ActiveModel::AttributeAssignment#assign_attributes to accept objects without each.

  Kouhei Yanagita

Active Record

• Fix SQLite3 data loss during table alterations with CASCADE foreign keys.

  When altering a table in SQLite3 that is referenced by child tables with ON DELETE CASCADE foreign keys, ActiveRecord would silently delete all data from the child tables. This occurred because SQLite requires table recreation for schema changes, and during this process the original table is temporarily dropped, triggering CASCADE deletes on child tables.

  The root cause was incorrect ordering of operations. The original code wrapped disable_referential_integrity inside a transaction, but PRAGMA foreign_keys cannot be modified inside a transaction in SQLite - attempting to do so simply has no effect. This meant foreign keys remained enabled during table recreation, causing CASCADE deletes to fire.

  The fix reverses the order to follow the official SQLite 12-step ALTER TABLE procedure: disable_referential_integrity now wraps the transaction instead of being wrapped by it. This ensures foreign keys are properly disabled before the transaction starts and re-enabled after it commits, preventing CASCADE deletes while maintaining data integrity through atomic transactions.

  Ruy Rocha

• Fix belongs_to associations not to clear the entire composite primary key.

  When clearing a belongs_to association that references a model with composite primary key, only the optional part of the key should be cleared.

  zzak

• Fix invalid records being autosaved when distantly associated records are marked for deletion.

  Ian Terrell, axlekb AB

• Prevent persisting invalid record.

  Edouard Chin

• Fix count with group by qualified name on loaded relation.

  Ryuta Kamizono

• Fix sum with qualified name on loaded relation.

  Chris Gunther

• Fix prepared statements on mysql2 adapter.

  Jean Boussier

• Fix query cache for pinned connections in multi threaded transactional tests.

  When a pinned connection is used across separate threads, they now use a separate cache store for each thread.

  This improve accuracy of system tests, and any test using multiple threads.

  Heinrich Lee Yu, Jean Boussier

• Don't add id_value attribute alias when attribute/column with that name already exists.

  Rob Lewis

Action View

• Fix javascript_include_tag type option to accept either strings and symbols.

  javascript_include_tag "application", type: :module
  javascript_include_tag "application", type: "module"
  

  Previously, only the string value was recoginized.

  Jean Boussier

• Fix excerpt helper with non-whitespace separator.

  Jonathan Hefner

• Respect html_options[:form] when collection_checkboxes generates the hidden <input>.

  Riccardo Odone

• Layouts have access to local variables passed to render.

  This fixes #31680 which was a regression in Rails 5.1.

  Mike Dalessio

• Argument errors related to strict locals in templates now raise an ActionView::StrictLocalsError, and all other argument errors are reraised as-is.

  Previously, any ArgumentError raised during template rendering was swallowed during strict local error handling, so that an ArgumentError unrelated to strict locals (e.g., a helper method invoked with incorrect arguments) would be replaced by a similar ArgumentError with an unrelated backtrace, making it difficult to debug templates.

  Now, any ArgumentError unrelated to strict locals is reraised, preserving the original backtrace for developers.

  Also note that ActionView::StrictLocalsError is a subclass of ArgumentError, so any existing code that rescues ArgumentError will continue to work.

  Fixes #52227.

  Mike Dalessio

• Fix stack overflow error in dependency tracker when dealing with circular dependencies

  Jean Boussier

• Fix a crash in ERB template error highlighting when the error occurs on a line in the compiled template that is past the end of the source template.

  Martin Emde

• Improve reliability of ERB template error highlighting. Fix infinite loops and crashes in highlighting and improve tolerance for alternate ERB handlers.

  Martin Emde

Action Pack

• Submit test requests using as: :html with Content-Type: x-www-form-urlencoded

  Sean Doyle

• Address rack 3.2 deprecations warnings.

  warning: Status code :unprocessable_entity is deprecated and will be removed in a future version of Rack.
  Please use :unprocessable_content instead.
  

  Rails API will transparently convert one into the other for the forseable future.

  Earlopain, Jean Boussier

• Always return empty body for HEAD requests in PublicExceptions and DebugExceptions.

  This is required by Rack::Lint (per RFC9110).

  Hartley McGuire

• Fix url_for to handle :path_params gracefully when it's not a Hash.

  Prevents various security scanners from causing exceptions.

  Martin Emde

• Fix ActionDispatch::Executor to unwrap exceptions like other error reporting middlewares.

  Jean Boussier

• Fix NoMethodError when a non-string CSRF token is passed through headers.

  Ryan Heneise

• Fix invalid response when rescuing ActionController::Redirecting::UnsafeRedirectError in a controller.

  Alex Ghiculescu

Active Job

• Include the actual Active Job locale when serializing rather than I18n locale.

  Adrien S

• Avoid crashing in Active Job logger when logging enqueueing errors

  ActiveJob.perform_all_later could fail with a TypeError when all provided jobs failed to be enqueueed.

  Efstathios Stivaros

Action Mailer

• No changes.

Action Cable

• Fixed compatibility with redis gem 5.4.1

  Jean Boussier

• Fixed a possible race condition in stream_from.

  OuYangJinTing

• Ensure the Postgresql adapter always use a dedicated connection even during system tests.

  Fix an issue with the Action Cable Postgresql adapter causing deadlock or various weird pg client error during system tests.

  Jean Boussier

Active Storage

• Fix config.active_storage.touch_attachment_records to work with eager loading.

  fatkodima

• A Blob will no longer autosave associated Attachment.

  This fixes an issue where a record with an attachment would have its dirty attributes reset, preventing your after commit callbacks on that record to behave as expected.

  Note that this change doesn't require any changes on your application and is supposed to be internal. Active Storage Attachment will continue to be autosaved (through a different relation).

  Edouard-chin

Action Mailbox

• No changes.

Action Text

• No changes.

Railties

• Use secret_key_base from ENV or credentials when present locally.

  When ENV["SECRET_KEY_BASE"] or Rails.application.credentials.secret_key_base is set for test or development, it is used for the Rails.config.secret_key_base, instead of generating a tmp/local_secret.txt file.

  Petrik de Heus

Guides

• No changes.