rails 8.1.0.rc1 on Ruby Gems

Active Support

Remove deprecated passing a Time object to Time#since.
Rafael Mendonça França
Remove deprecated Benchmark.ms method. It is now defined in the benchmark gem.
Rafael Mendonça França
Remove deprecated addition for Time instances with ActiveSupport::TimeWithZone.
Rafael Mendonça França
Remove deprecated support for to_time to preserve the system local time. It will now always preserve the receiver
timezone.
Rafael Mendonça França
Deprecate config.active_support.to_time_preserves_timezone.
Rafael Mendonça França
Standardize event name formatting in assert_event_reported error messages.
The event name in failure messages now uses .inspect (e.g., name: "user.created")
to match assert_events_reported and provide type clarity between strings and symbols.
This only affects tests that assert on the failure message format itself.
George Ma
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
Add config.active_support.escape_js_separators_in_json.
Introduce a new framework default to skip escaping LINE SEPARATOR (U+2028) and PARAGRAPH SEPARATOR (U+2029) in JSON.
Historically these characters were not valid inside JavaScript literal strings but that changed in ECMAScript 2019.
As such it's no longer a concern in modern browsers: https://caniuse.com/mdn-javascript_builtins_json_json_superset.
Étienne Barrié, Jean Boussier
Fix NameError when class_attribute is defined on instance singleton classes.
Previously, calling class_attribute on an instance's singleton class would raise
a NameError when accessing the attribute through the instance.
```
object = MyClass.new
object.singleton_class.class_attribute :foo, default: "bar"
object.foo # previously raised NameError, now returns "bar"
```
Joshua Young
Introduce ActiveSupport::Testing::EventReporterAssertions#with_debug_event_reporting
to enable event reporter debug mode in tests.
The previous way to enable debug mode is by using #with_debug on the
event reporter itself, which is too verbose. This new helper will help
clear up any confusion on how to test debug events.
Gannon McGibbon
Add ActiveSupport::StructuredEventSubscriber for consuming notifications and
emitting structured event logs. Events may be emitted with the #emit_event
or #emit_debug_event methods.
```
class MyStructuredEventSubscriber < ActiveSupport::StructuredEventSubscriber
  def notification(event)
    emit_event("my.notification", data: 1)
  end
end
```
Adrianna Chang
ActiveSupport::FileUpdateChecker does not depend on Time.now to prevent unecessary reloads with time travel test helpers
Jan Grodowski

Active Model

Add reset_token: { expires_in: ... } option to has_secure_password.
Allows configuring the expiry duration of password reset tokens (default remains 15 minutes for backwards compatibility).
```
has_secure_password reset_token: { expires_in: 1.hour }
```
Jevin Sew, Abeid Ahmed

Active Record

Add replicas to test database parallelization setup.
Setup and configuration of databases for parallel testing now includes replicas.
This fixes an issue when using a replica database, database selector middleware,
and non-transactional tests, where integration tests running in parallel would select
the base test database, i.e. db_test, instead of the numbered parallel worker database,
i.e. db_test_{n}.
Adam Maas
Support virtual (not persisted) generated columns on PostgreSQL 18+
PostgreSQL 18 introduces virtual (not persisted) generated columns,
which are now the default unless the stored: true option is explicitly specified on PostgreSQL 18+.
```
create_table :users do |t|
  t.string :name
  t.virtual :lower_name,  type: :string,  as: "LOWER(name)", stored: false
  t.virtual :name_length, type: :integer, as: "LENGTH(name)"
end
```
Yasuo Honda
Optimize schema dumping to prevent duplicate file generation.
ActiveRecord::Tasks::DatabaseTasks.dump_all now tracks which schema files
have already been dumped and skips dumping the same file multiple times.
This improves performance when multiple database configurations share the
same schema dump path.
Mikey Gough, Hartley McGuire
Add structured events for Active Record:
- active_record.strict_loading_violation
- active_record.sql
Gannon McGibbon

Add support for integer shard keys.

# Now accepts symbols as shard keys.
ActiveRecord::Base.connects_to(shards: {
  1: { writing: :primary_shard_one, reading: :primary_shard_one },
  2: { writing: :primary_shard_two, reading: :primary_shard_two},
})

ActiveRecord::Base.connected_to(shard: 1) do
  # ..
end

Nony Dutton

Add ActiveRecord::Base.only_columns
Similar in use case to ignored_columns but listing columns to consider rather than the ones
to ignore.
Can be useful when working with a legacy or shared database schema, or to make safe schema change
in two deploys rather than three.
Anton Kandratski
Use PG::Connection#close_prepared (protocol level Close) to deallocate
prepared statements when available.
To enable its use, you must have pg >= 1.6.0, libpq >= 17, and a PostgreSQL
database version >= 17.
Hartley McGuire, Andrew Jackson
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
Fix time attribute dirty tracking with timezone conversions.
Time-only attributes now maintain a fixed date of 2000-01-01 during timezone conversions,
preventing them from being incorrectly marked as changed due to date shifts.
This fixes an issue where time attributes would be marked as changed when setting the same time value
due to timezone conversion causing internal date shifts.
Prateek Choudhary
Skip calling PG::Connection#cancel in cancel_any_running_query
when using libpq >= 18 with pg < 1.6.0, due to incompatibility.
Rollback still runs, but may take longer.
Yasuo Honda, Lars Kanis
Don't add id_value attribute alias when attribute/column with that name already exists.
Rob Lewis

Action View

The BEGIN template annotation/comment was previously printed on the same line as the following element. We now insert a newline inside the comment so it spans two lines without adding visible whitespace to the HTML output to enhance readability.
Before:
```
<p>This is grand!</p>
```
After:
```
<p>This is grand!</p>
```
Emmanuel Hayford
Add structured events for Action View:
- action_view.render_template
- action_view.render_partial
- action_view.render_layout
- action_view.render_collection
- action_view.render_start
Gannon McGibbon
Fix label with for option not getting prefixed by form namespace value
Abeid Ahmed, Hartley McGuire
Add fetchpriority to Link headers to match HTML generated by preload_link_tag.
Guillermo Iguaran

Action Pack

Add link-local IP ranges to ActionDispatch::RemoteIp default proxies.
Link-local addresses (169.254.0.0/16 for IPv4 and fe80::/10 for IPv6)
are now included in the default trusted proxy list, similar to private IP ranges.
Adam Daniels
remote_ip will no longer ignore IPs in X-Forwarded-For headers if they
are accompanied by port information.
Duncan Brown, Prevenios Marinos, Masafumi Koba, Adam Daniels
Add action_dispatch.verbose_redirect_logs setting that logs where redirects were called from.
Similar to active_record.verbose_query_logs and active_job.verbose_enqueue_logs, this adds a line in your logs that shows where a redirect was called from.
Example:
```
Redirected to http://localhost:3000/posts/1
↳ app/controllers/posts_controller.rb:32:in `block (2 levels) in create'
```
Dennis Paagman

Add engine route filtering and better formatting in bin/rails routes.

Allow engine routes to be filterable in the routing inspector, and
improve formatting of engine routing output.

Before:

> bin/rails routes -e engine_only
No routes were found for this grep pattern.
For more information about routes, see the Rails guide: https://guides.rubyonrails.org/routing.html.

After:

> bin/rails routes -e engine_only
Routes for application:
No routes were found for this grep pattern.
For more information about routes, see the Rails guide: https://guides.rubyonrails.org/routing.html.

Routes for Test::Engine:
Prefix Verb URI Pattern       Controller#Action
engine GET  /engine_only(.:format) a#b

Dennis Paagman, Gannon McGibbon

Add structured events for Action Pack and Action Dispatch:
- action_dispatch.redirect
- action_controller.request_started
- action_controller.request_completed
- action_controller.callback_halted
- action_controller.rescue_from_handled
- action_controller.file_sent
- action_controller.redirected
- action_controller.data_sent
- action_controller.unpermitted_parameters
- action_controller.fragment_cache
Adrianna Chang
URL helpers for engines mounted at the application root handle SCRIPT_NAME correctly.
Fixed an issue where SCRIPT_NAME is not applied to paths generated for routes in an engine
mounted at "/".
Mike Dalessio

Update ActionController::Metal::RateLimiting to support passing method names to :by and :with

class SignupsController < ApplicationController
  rate_limit to: 10, within: 1.minute, with: :redirect_with_flash

  private
    def redirect_with_flash
      redirect_to root_url, alert: "Too many requests!"
    end
end

Sean Doyle

Optimize ActionDispatch::Http::URL.build_host_url when protocol is included in host.
When using URL helpers with a host that includes the protocol (e.g., { host: "https://example.com" }),
skip unnecessary protocol normalization and string duplication since the extracted protocol is already
in the correct format. This eliminates 2 string allocations per URL generation and provides a ~10%
performance improvement for this case.
Joshua Young, Hartley McGuire
Allow action_controller.logger to be disabled by setting it to nil or false instead of always defaulting to Rails.logger.
Roberto Miranda

Active Job

Add structured events for Active Job:
- active_job.enqueued
- active_job.bulk_enqueued
- active_job.started
- active_job.completed
- active_job.retry_scheduled
- active_job.retry_stopped
- active_job.discarded
- active_job.interrupt
- active_job.resume
- active_job.step_skipped
- active_job.step_started
- active_job.step
Adrianna Chang

Action Mailer

Add structured events for Action Mailer:
- action_mailer.delivered
- action_mailer.processed
Gannon McGibbon

Action Cable

No changes.

Active Storage

Add structured events for Active Storage:
- active_storage.service_upload
- active_storage.service_download
- active_storage.service_streaming_download
- active_storage.preview
- active_storage.service_delete
- active_storage.service_delete_prefixed
- active_storage.service_exist
- active_storage.service_url
- active_storage.service_mirror
Gannon McGibbon

Allow analyzers and variant transformer to be fully configurable

# ActiveStorage.analyzers can be set to an empty array:
config.active_storage.analyzers = []
# => ActiveStorage.analyzers = []

# or use custom analyzer:
config.active_storage.analyzers = [ CustomAnalyzer ]
# => ActiveStorage.analyzers = [ CustomAnalyzer ]

If no configuration is provided, it will use the default analyzers.

You can also disable variant processor to remove warnings on startup about missing gems.

config.active_storage.variant_processor = :disabled

zzak, Alexandre Ruban

Action Mailbox

No changes.

Action Text

De-couple @rails/actiontext/attachment_upload.js from Trix.Attachment
Implement @rails/actiontext/index.js with a direct-upload:progress event
listeners and Promise resolution.
Sean Doyle

Capture block content for form helper methods

<%= rich_textarea_tag :content, nil do %>
  <h1>hello world</h1>
<% end %>
<!-- <input type="hidden" name="content" id="trix_input_1" value="&lt;h1&gt;hello world&lt;/h1&gt;"/><trix-editor … -->

<%= rich_textarea :message, :content, input: "trix_input_1" do %>
  <h1>hello world</h1>
<% end %>
<!-- <input type="hidden" name="message[content]" id="trix_input_1" value="&lt;h1&gt;hello world&lt;/h1&gt;"/><trix-editor … -->

<%= form_with model: Message.new do |form| %>
  <%= form.rich_textarea :content do %>
    <h1>hello world</h1>
  <% end %>
<% end %>
<!-- <form action="/messages" accept-charset="UTF-8" method="post"><input type="hidden" name="message[content]" id="message_content_trix_input_message" value="&lt;h1&gt;hello world&lt;/h1&gt;"/><trix-editor … -->

Sean Doyle

Generalize :rich_text_area Capybara selector
Prepare for more Action Text-capable WYSIWYG editors by making
:rich_text_area rely on the presence of [role="textbox"] and
[contenteditable] HTML attributes rather than a <trix-editor> element.
Sean Doyle

Railties

Suggest bin/rails action_text:install from Action Dispatch error page
Sean Doyle
Remove deprecated STATS_DIRECTORIES.
Rafael Mendonça França
Remove deprecated bin/rake stats command.
Rafael Mendonça França
Remove deprecated rails/console/methods.rb file.
Rafael Mendonça França
Don't generate system tests by default.
Rails scaffold generator will no longer generate system tests by default. To enable this pass --system-tests=true or generate them with bin/rails generate system_test name_of_test.
Eileen M. Uchitelle
Optionally skip bundler-audit.
Skips adding the bin/bundler-audit & config/bundler-audit.yml if the gem is not installed when bin/rails app:update runs.
Passes an option to --skip-bundler-audit when new apps are generated & adds that same option to the --minimal generator flag.
Jill Klang
Show engine routes in /rails/info/routes as well.
Petrik de Heus
Exclude asset_path configuration from Kamal deploy.yml for API applications.
API applications don't serve assets, so the asset_path configuration in deploy.yml
is not needed and can cause 404 errors on in-flight requests. The asset_path is now
only included for regular Rails applications that serve assets.
Saiqul Haq
Reverted the incorrect default config.public_file_server.headers config.
If you created a new application using Rails 8.1.0.beta1, make sure to regenerate
config/environments/production.rb, or to manually edit the config.public_file_server.headers
configuration to just be:
```
# Cache assets for far-future expiry since they are all digest stamped.
config.public_file_server.headers = { "cache-control" => "public, max-age=#{1.year.to_i}" }
```
Jean Boussier

Guides

No changes.