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Rails 4.0.0 (unreleased)

  • Kernel#capture can catch output from subprocesses Dmitry Vorotilin

  • to_xml conversions now use builder's tag! method instead of explicit invocation of method_missing.

    Nikita Afanasenko

  • Fixed timezone mapping of the Solomon Islands. Steve Klabnik

  • Make callstack attribute optional in ActiveSupport::Deprecation::Reporting methods warn and deprecation_warning

    Alexey Gaziev

  • Implement HashWithIndifferentAccess#replace so key? works correctly. David Graham

  • Handle the possible Permission Denied errors atomic.rb might trigger due to its chown and chmod calls. Daniele Sluijters

  • Hash#extract! returns only those keys that present in the receiver.

    {:a => 1, :b => 2}.extract!(:a, :x) # => {:a => 1}
    

    Mikhail Dieterle

  • Hash#extract! returns the same subclass, that the receiver is. I.e. HashWithIndifferentAccess#extract! returns HashWithIndifferentAccess instance.

    Mikhail Dieterle

  • Optimize ActiveSupport::Cache::Entry to reduce memory and processing overhead. Brian Durand

  • Tests tag the Rails log with the current test class and test case:

    [SessionsControllerTest] [test_0002_sign in] Processing by SessionsController#create as HTML
    [SessionsControllerTest] [test_0002_sign in] ...
    

    Jeremy Kemper

  • Add logger.push_tags and .pop_tags to complement logger.tagged:

    class Job
      def before
        Rails.logger.push_tags :jobs, self.class.name
      end
    
      def after
        Rails.logger.pop_tags 2
      end
    end
    

    Jeremy Kemper

  • Allow delegation to the class using the :class keyword, replacing self.class usage:

    class User
      def self.hello
       "world"
      end
    
      delegate :hello, to: :class
    end
    

    Marc-Andre Lafortune

  • Date.beginning_of_week thread local and beginning_of_week application config option added (default is Monday).

    Innokenty Mikhailov

  • An optional block can be passed to config_accessor to set its default value

    class User
      include ActiveSupport::Configurable
      config_accessor :hair_colors do
        [:brown, :black, :blonde, :red]
      end
    end
    
    User.hair_colors # => [:brown, :black, :blonde, :red]
    

    Larry Lv

  • ActiveSupport::Benchmarkable#silence has been deprecated due to its lack of thread safety. It will be removed without replacement in Rails 4.1.

    Steve Klabnik

  • An optional block can be passed to Hash#deep_merge. The block will be invoked for each duplicated key and used to resolve the conflict.

    Pranas Kiziela

  • ActiveSupport::Deprecation is now a class. It is possible to create an instance of deprecator. Backwards compatibility has been preserved.

    You can choose which instance of the deprecator will be used.

    deprecate :method_name, :deprecator => deprecator_instance
    

    You can use ActiveSupport::Deprecation in your gem.

    require 'active_support/deprecation'
    require 'active_support/core_ext/module/deprecation'
    
    class MyGem
      def self.deprecator
        ActiveSupport::Deprecation.new('2.0', 'MyGem')
      end
    
      def old_method
      end
    
      def new_method
      end
    
      deprecate :old_method => :new_method, :deprecator => deprecator
    end
    
    MyGem.new.old_method
    # => DEPRECATION WARNING: old_method is deprecated and will be removed from MyGem 2.0 (use new_method instead). (called from <main> at file.rb:18)
    

    Piotr Niełacny & Robert Pankowecki

  • ERB::Util.html_escape encodes single quote as #39. Decimal form has better support in old browsers. Kalys Osmonov

  • ActiveSupport::Callbacks: deprecate monkey patch of object callbacks. Using the #filter method like this:

    before_filter MyFilter.new
    
    class MyFilter
      def filter(controller)
      end
    end
    

    Is now deprecated with recommendation to use the corresponding filter type (#before, #after or #around):

    before_filter MyFilter.new
    
    class MyFilter
      def before(controller)
      end
    end
    

    Bogdan Gusiev

  • An optional block can be passed to HashWithIndifferentAccess#update and #merge. The block will be invoked for each duplicated key, and used to resolve the conflict, thus replicating the behaviour of the corresponding methods on the Hash class.

    Leo Cassarani

  • Remove j alias for ERB::Util#json_escape. The j alias is already used for ActionView::Helpers::JavaScriptHelper#escape_javascript and both modules are included in the view context that would confuse the developers.

    Akira Matsuda

  • Replace deprecated memcache-client gem with dalli in ActiveSupport::Cache::MemCacheStore

    Guillermo Iguaran

  • Add default values to all ActiveSupport::NumberHelper methods, to avoid errors with empty locales or missing values.

    Carlos Antonio da Silva

  • ActiveSupport::JSON::Variable is deprecated. Define your own #as_json and #encode_json methods for custom JSON string literals.

    Erich Menge

  • Add String#indent. fxn & Ace Suares

  • Inflections can now be defined per locale. singularize and pluralize accept locale as an extra argument.

    David Celis

  • Object#try will now return nil instead of raise a NoMethodError if the receiving object does not implement the method, but you can still get the old behavior by using the new Object#try!.

    DHH

  • ERB::Util.html_escape now escapes single quotes. Santiago Pastorino

  • Time#change now works with time values with offsets other than UTC or the local time zone. Andrew White

  • ActiveSupport::Callbacks: deprecate usage of filter object with #before and #after methods as around callback. Bogdan Gusiev

  • Add Time#prev_quarter and Time#next_quarter short-hands for months_ago(3) and months_since(3). SungHee Kang

  • Remove obsolete and unused require_association method from dependencies. fxn

  • Add :instance_accessor option for config_accessor.

    class User
      include ActiveSupport::Configurable
      config_accessor :allowed_access, instance_accessor: false
    end
    
    User.new.allowed_access = true # => NoMethodError
    User.new.allowed_access        # => NoMethodError
    

    Francesco Rodriguez

  • ActionView::Helpers::NumberHelper methods have been moved to ActiveSupport::NumberHelper and are now available via Numeric#to_s. Numeric#to_s now accepts the formatting options :phone, :currency, :percentage, :delimited, :rounded, :human, and :human_size. Andrew Mutz

  • Add Hash#transform_keys, Hash#transform_keys!, Hash#deep_transform_keys, and Hash#deep_transform_keys!. Mark McSpadden

  • Changed xml type datetime to dateTime (with upper case letter T). Angelo Capilleri

  • Add :instance_accessor option for class_attribute. Alexey Vakhov

  • constantize now looks in the ancestor chain. Marc-Andre Lafortune & Andrew White

  • Adds Hash#deep_stringify_keys and Hash#deep_stringify_keys! to convert all keys from a +Hash+ instance into strings Lucas Húngaro

  • Adds Hash#deep_symbolize_keys and Hash#deep_symbolize_keys! to convert all keys from a +Hash+ instance into symbols Lucas Húngaro

  • Object#try can't call private methods. Vasiliy Ermolovich

  • AS::Callbacks#run_callbacks remove key argument. Francesco Rodriguez

  • deep_dup works more expectedly now and duplicates also values in +Hash+ instances and elements in +Array+ instances. Alexey Gaziev

  • Inflector no longer applies ice -> ouse to words like slice, police, ets Wes Morgan

  • Add ActiveSupport::Deprecations.behavior = :silence to completely ignore Rails runtime deprecations twinturbo

  • Make Module#delegate stop using send - can no longer delegate to private methods. dasch

  • AS::Callbacks: deprecate :rescuable option. Bogdan Gusiev

  • Adds Integer#ordinal to get the ordinal suffix string of an integer. Tim Gildea

  • AS::Callbacks: :per_key option is no longer supported

  • AS::Callbacks#define_callbacks: add :skip_after_callbacks_if_terminated option.

  • Add html_escape_once to ERB::Util, and delegate escape_once tag helper to it. Carlos Antonio da Silva

  • Remove ActiveSupport::TestCase#pending method, use skip instead. Carlos Antonio da Silva

  • Deprecates the compatibility method Module#local_constant_names, use Module#local_constants instead (which returns symbols). fxn

  • Deletes the compatibility method Module#method_names, use Module#methods from now on (which returns symbols). fxn

  • Deletes the compatibility method Module#instance_method_names, use Module#instance_methods from now on (which returns symbols). fxn

  • BufferedLogger is deprecated. Use ActiveSupport::Logger, or the logger from Ruby stdlib.

  • Unicode database updated to 6.1.0.

  • Adds encode_big_decimal_as_string option to force JSON serialization of BigDecimals as numeric instead of wrapping them in strings for safety.

  • Remove deprecated ActiveSupport::JSON::Variable. Erich Menge

  • Optimize log subscribers to check log level before doing any processing. Brian Durand

Please check 3-2-stable for previous changes.

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