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[Release News] Ruby on Rails v6.1.0 released!

Ruby on Rails v6.1.0 has been released.

Active Support
Ensure MemoryStore disables compression by default. Reverts behavior of
MemoryStore to its prior rails 5.1 behavior.

Max Gurewitz
Calling iso8601 on negative durations retains the negative sign on individual
digits instead of prepending it.

This change is required so we can interoperate with PostgreSQL, which prefers
negative signs for each component.

Compatibility with other iso8601 parsers which support leading negatives as well
as negatives per component is still retained.

Before:
(-1.year - 1.day).iso8601
# => "-P1Y1D"
After:
(-1.year - 1.day).iso8601
# => "P-1Y-1D"
Vipul A M
Remove deprecated ActiveSupport::Notifications::Instrumenter#end=.

Rafael Mendonça França

Deprecate ActiveSupport::Multibyte::Unicode.default_normalization_form.

Rafael Mendonça França

Remove deprecated ActiveSupport::Multibyte::Unicode.pack_graphemes,
ActiveSupport::Multibyte::Unicode.unpack_graphemes,
ActiveSupport::Multibyte::Unicode.normalize,
ActiveSupport::Multibyte::Unicode.downcase,
ActiveSupport::Multibyte::Unicode.upcase and ActiveSupport::Multibyte::Unicode.swapcase.

Rafael Mendonça França

Remove deprecated ActiveSupport::Multibyte::Chars#consumes? and ActiveSupport::Multibyte::Chars#normalize.

Rafael Mendonça França

Remove deprecated file active_support/core_ext/range/include_range.

Rafael Mendonça França

Remove deprecated file active_support/core_ext/hash/transform_values.

Rafael Mendonça França

Remove deprecated file active_support/core_ext/hash/compact.

Rafael Mendonça França

Remove deprecated file active_support/core_ext/array/prepend_and_append.

Rafael Mendonça França

Remove deprecated file active_support/core_ext/numeric/inquiry.

Rafael Mendonça França

Remove deprecated file active_support/core_ext/module/reachable.

Rafael Mendonça França

Remove deprecated Module#parent_name, Module#parent and Module#parents.

Rafael Mendonça França

Remove deprecated ActiveSupport::LoggerThreadSafeLevel#after_initialize.

Rafael Mendonça França

Remove deprecated LoggerSilence constant.

Rafael Mendonça França

Remove deprecated fallback to I18n.default_local when config.i18n.fallbacks is empty.

Rafael Mendonça França

Remove entries from local cache on RedisCacheStore#delete_matched

Fixes #38627

ojab

Speed up ActiveSupport::SecurityUtils.fixed_length_secure_compare by using
OpenSSL.fixed_length_secure_compare, if available.

Nate Matykiewicz
ActiveSupport::Cache::MemCacheStore now checks ENV["MEMCACHE_SERVERS"] before falling back to "localhost:11211" if configured without any addresses.
config.cache_store = :mem_cache_store

# is now equivalent to

config.cache_store = :mem_cache_store, ENV["MEMCACHE_SERVERS"] || "localhost:11211"

# instead of

config.cache_store = :mem_cache_store, "localhost:11211" # ignores ENV["MEMCACHE_SERVERS"]
Sam Bostock
ActiveSupport::Subscriber#attach_to now accepts an inherit_all: argument. When set to true,
it allows a subscriber to receive events for methods defined in the subscriber’s ancestor class(es).
class ActionControllerSubscriber < ActiveSupport::Subscriber
  attach_to :action_controller

  def start_processing(event)
    info "Processing by #{event.payload[:controller]}##{event.payload[:action]} as #{format}"
  end

  def redirect_to(event)
    info { "Redirected to #{event.payload[:location]}" }
  end
end

# We detach ActionControllerSubscriber from the :action_controller namespace so that our CustomActionControllerSubscriber
# can provide its own instrumentation for certain events in the namespace
ActionControllerSubscriber.detach_from(:action_controller)

class CustomActionControllerSubscriber < ActionControllerSubscriber
  attach_to :action_controller, inherit_all: true

  def start_processing(event)
    info "A custom response to start_processing events"
  end

  # => CustomActionControllerSubscriber will process events for "start_processing.action_controller" notifications
  # using its own #start_processing implementation, while retaining ActionControllerSubscriber's instrumentation
  # for "redirect_to.action_controller" notifications
end
Adrianna Chang
Allow the digest class used to generate non-sensitive digests to be configured with config.active_support.hash_digest_class.

config.active_support.use_sha1_digests is deprecated in favour of config.active_support.hash_digest_class = ::Digest::SHA1.

Dirkjan Bussink

Fix bug to make memcached write_entry expire correctly with unless_exist

Jye Lee

Add ActiveSupport::Duration conversion methods

in_seconds, in_minutes, in_hours, in_days, in_weeks, in_months, and in_years return the respective duration covered.

Jason York

Fixed issue in ActiveSupport::Cache::RedisCacheStore not passing options
to read_multi causing fetch_multi to not work properly

Rajesh Sharma

Fixed issue in ActiveSupport::Cache::MemCacheStore which caused duplicate compression,
and caused the provided compression_threshold to not be respected.

Max Gurewitz

Prevent RedisCacheStore and MemCacheStore from performing compression
when reading entries written with raw: true.

Max Gurewitz

URI.parser is deprecated and will be removed in Rails 6.2. Use
URI::DEFAULT_PARSER instead.

Jean Boussier

require_dependency has been documented to be obsolete in :zeitwerk
mode. The method is not deprecated as such (yet), but applications are
encouraged to not use it.

In :zeitwerk mode, semantics match Ruby’s and you do not need to be
defensive with load order. Just refer to classes and modules normally. If
the constant name is dynamic, camelize if needed, and constantize.

Xavier Noria
Add 3rd person aliases of Symbol#start_with? and Symbol#end_with?.
:foo.starts_with?("f") # => true
:foo.ends_with?("o")   # => true
Ryuta Kamizono
Add override of unary plus for ActiveSupport::Duration.

+ 1.second is now identical to +1.second to prevent errors
where a seemingly innocent change of formatting leads to a change in the code behavior.

Before:
+1.second.class
# => ActiveSupport::Duration
(+ 1.second).class
# => Integer
After:
+1.second.class
# => ActiveSupport::Duration
(+ 1.second).class
# => ActiveSupport::Duration
Fixes #39079.

Roman Kushnir
Add subsec to ActiveSupport::TimeWithZone#inspect.

Before:
Time.at(1498099140).in_time_zone.inspect
# => "Thu, 22 Jun 2017 02:39:00 UTC +00:00"
Time.at(1498099140, 123456780, :nsec).in_time_zone.inspect
# => "Thu, 22 Jun 2017 02:39:00 UTC +00:00"
Time.at(1498099140 + Rational("1/3")).in_time_zone.inspect
# => "Thu, 22 Jun 2017 02:39:00 UTC +00:00"
After:
Time.at(1498099140).in_time_zone.inspect
# => "Thu, 22 Jun 2017 02:39:00.000000000 UTC +00:00"
Time.at(1498099140, 123456780, :nsec).in_time_zone.inspect
# => "Thu, 22 Jun 2017 02:39:00.123456780 UTC +00:00"
Time.at(1498099140 + Rational("1/3")).in_time_zone.inspect
# => "Thu, 22 Jun 2017 02:39:00.333333333 UTC +00:00"
akinomaeni
Calling ActiveSupport::TaggedLogging#tagged without a block now returns a tagged logger.
logger.tagged("BCX").info("Funky time!") # => [BCX] Funky time!
Eugene Kenny
Align Range#cover? extension behavior with Ruby behavior for backwards ranges.

(1..10).cover?(5..3) now returns false, as it does in plain Ruby.

Also update #include? and #=== behavior to match.

Michael Groeneman

Update to TZInfo v2.0.0.

This changes the output of ActiveSupport::TimeZone.utc_to_local, but
can be controlled with the
ActiveSupport.utc_to_local_returns_utc_offset_times config.

New Rails 6.1 apps have it enabled by default, existing apps can upgrade
via the config in config/initializers/new_framework_defaults_6_1.rb

See the utc_to_local_returns_utc_offset_times documentation for details.

Phil Ross, Jared Beck

Add Date and Time #yesterday? and #tomorrow? alongside #today?.

Aliased to #prev_day? and #next_day? to match the existing #prev/next_day methods.

Jatin Dhankhar

Add Enumerable#pick to complement ActiveRecord::Relation#pick.

Eugene Kenny
[Breaking change] ActiveSupport::Callbacks#halted_callback_hook now receive a 2nd argument:

ActiveSupport::Callbacks#halted_callback_hook now receive the name of the callback
being halted as second argument.
This change will allow you to differentiate which callbacks halted the chain
and act accordingly.
  class Book < ApplicationRecord
    before_save { throw(:abort) }
    before_create { throw(:abort) }

    def halted_callback_hook(filter, callback_name)
      Rails.logger.info("Book couldn't be #{callback_name}d")
    end

    Book.create # => "Book couldn't be created"
    book.save # => "Book couldn't be save...