rails--rails/activesupport/CHANGELOG.md

• Support multiple arguments in HashWithIndifferentAccess for merge and update methods, to follow Ruby 2.6 addition.

  Wojciech Wnętrzak

• Allow initializing thread_mattr_* attributes via :default option

  class Scraper
    thread_mattr_reader :client, default: Api::Client.new
  end
  

  Guilherme Mansur

• Add compact_blank for those times when you want to remove #blank? values from an Enumerable (also compact_blank! on Hash, Array, ActionController::Parameters)

  Dana Sherson

• Make ActiveSupport::Logger Fiber-safe. Fixes #36752.

  Use Fiber.current.__id__ in ActiveSupport::Logger#local_level= in order to make log level local to Ruby Fibers in addition to Threads.

  Example:

  logger = ActiveSupport::Logger.new(STDOUT)
  logger.level = 1
  p "Main is debug? #{logger.debug?}"
  
  Fiber.new {
    logger.local_level = 0
    p "Thread is debug? #{logger.debug?}"
  }.resume
  
  p "Main is debug? #{logger.debug?}"
  

  Before:

  Main is debug? false
  Thread is debug? true
  Main is debug? true
  

  After:

  Main is debug? false
  Thread is debug? true
  Main is debug? false
  

  Alexander Varnin

• Allow the on_rotation proc used when decrypting/verifying a message to be passed at the constructor level.

  Before:

  crypt = ActiveSupport::MessageEncryptor.new('long_secret')
  crypt.decrypt_and_verify(encrypted_message, on_rotation: proc { ... })
  crypt.decrypt_and_verify(another_encrypted_message, on_rotation: proc { ... })
  

  After:

  crypt = ActiveSupport::MessageEncryptor.new('long_secret', on_rotation: proc { ... })
  crypt.decrypt_and_verify(encrypted_message)
  crypt.decrypt_and_verify(another_encrypted_message)
  

  Edouard Chin

• delegate_missing_to would raise a DelegationError if the object delegated to was nil. Now the allow_nil option has been added to enable the user to specify they want nil returned in this case.

  Matthew Tanous

• truncate would return the original string if it was too short to be truncated and a frozen string if it were long enough to be truncated. Now truncate will consistently return an unfrozen string regardless. This behavior is consistent with gsub and strip.

  Before:

  'foobar'.truncate(5).frozen?
  # => true
  'foobar'.truncate(6).frozen?
  # => false
  

  After:

  'foobar'.truncate(5).frozen?
  # => false
  'foobar'.truncate(6).frozen?
  # => false
  

  Jordan Thomas

Please check 6-0-stable for previous changes.