rails--rails/activesupport/CHANGELOG.md

• Added a faster and more compact ActiveSupport::Cache serialization format.

  It can be enabled with config.active_support.cache_format_version = 7.0 or config.load_defaults(7.0). Regardless of the configuration Active Support 7.0 can read cache entries serialized by Active Support 6.1 which allows to upgrade without invalidating the cache. However Rails 6.1 can't read the new format, so all readers must be upgraded before the new format is enabled.

  Jean Boussier

• Add Enumerable#sole, per ActiveRecord::FinderMethods#sole. Returns the sole item of the enumerable, raising if no items are found, or if more than one is.

  Asherah Connor

• Freeze ActiveSupport::Duration#parts and remove writer methods.

  Durations are meant to be value objects and should not be mutated.

  Andrew White

• Fix ActiveSupport::TimeZone#utc_to_local with fractional seconds.

  When utc_to_local_returns_utc_offset_times is false and the time instance had fractional seconds the new UTC time instance was out by a factor of 1,000,000 as the Time.utc constructor takes a usec value and not a fractional second value.

  Andrew White

• Add expires_at argument to ActiveSupport::Cache write and fetch to set a cache entry TTL as an absolute time.

  Rails.cache.write(key, value, expires_at: Time.now.at_end_of_hour)
  

  Jean Boussier

• Deprecate ActiveSupport::TimeWithZone.name so that from Rails 7.1 it will use the default implementation.

  Andrew White

• Tests parallelization is now disabled when running individual files to prevent the setup overhead.

  It can still be enforced if the environment variable PARALLEL_WORKERS is present and set to a value greater than 1.

  Ricardo Díaz

• Fix proxying keyword arguments in ActiveSupport::CurrentAttributes.

  Marcin Kołodziej

• Add Enumerable#maximum and Enumerable#minimum to easily calculate the maximum or minimum from extracted elements of an enumerable.

  payments = [Payment.new(5), Payment.new(15), Payment.new(10)]
  
  payments.minimum(:price) # => 5
  payments.maximum(:price) # => 15
  

  This also allows passing enumerables to fresh_when and stale? in Action Controller. See PR #41404 for an example.

  Ayrton De Craene

• ActiveSupport::Cache::MemCacheStore now accepts an explicit nil for its addresses argument.

  config.cache_store = :mem_cache_store, nil
  
  # is now equivalent to
  
  config.cache_store = :mem_cache_store
  
  # and is also equivalent to
  
  config.cache_store = :mem_cache_store, ENV["MEMCACHE_SERVERS"] || "localhost:11211"
  
  # which is the fallback behavior of Dalli
  

  This helps those migrating from :dalli_store, where an explicit nil was permitted.

  Michael Overmeyer

• Add Enumerable#in_order_of to put an Enumerable in a certain order by a key.

  DHH

• ActiveSupport::Inflector.camelize behaves expected when provided a symbol :upper or :lower argument. Matches String#camelize behavior.

  Alex Ghiculescu

• Raises an ArgumentError when the first argument of ActiveSupport::Notification.subscribe is invalid.

  Vipul A M

• HashWithIndifferentAccess#deep_transform_keys now returns a HashWithIndifferentAccess instead of a Hash.

  Nathaniel Woodthorpe

• consume dalli’s cache_nils configuration as ActiveSupport::Cache's skip_nil when using MemCacheStore.

  Ritikesh G

• add RedisCacheStore#stats method similar to MemCacheStore#stats. Calls redis#info internally.

  Ritikesh G

Please check 6-1-stable for previous changes.