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Diffstat (limited to 'guides')
-rw-r--r-- | guides/source/4_2_release_notes.md | 243 | ||||
-rw-r--r-- | guides/source/upgrading_ruby_on_rails.md | 6 |
2 files changed, 249 insertions, 0 deletions
diff --git a/guides/source/4_2_release_notes.md b/guides/source/4_2_release_notes.md new file mode 100644 index 0000000000..be007f93a7 --- /dev/null +++ b/guides/source/4_2_release_notes.md @@ -0,0 +1,243 @@ +Ruby on Rails 4.2 Release Notes +=============================== + +Highlights in Rails 4.2: + +These release notes cover only the major changes. To know about various bug +fixes and changes, please refer to the change logs or check out the +[list of commits](https://github.com/rails/rails/commits/master) in the main +Rails repository on GitHub. + +-------------------------------------------------------------------------------- + +Upgrading to Rails 4.2 +---------------------- + +If you're upgrading an existing application, it's a great idea to have good test +coverage before going in. You should also first upgrade to Rails 4.1 in case you +haven't and make sure your application still runs as expected before attempting +an update to Rails 4.2. A list of things to watch out for when upgrading is +available in the +[Upgrading Ruby on Rails](upgrading_ruby_on_rails.html#upgrading-from-rails-4-1-to-rails-4-2) +guide. + + +Major Features +-------------- + + + +Railties +-------- + +Please refer to the +[Changelog](https://github.com/rails/rails/blob/4-2-stable/railties/CHANGELOG.md) +for detailed changes. + +### Removals + +* The `rails application` command has been removed without replacement. + ([Pull Request](https://github.com/rails/rails/pull/11616)) + +### Notable changes + +* Introduced `bin/setup` script to bootstrap an application. + ([Pull Request](https://github.com/rails/rails/pull/15189)) + +* Changed default value for `config.assets.digest` to `true` in development. + ([Pull Request](https://github.com/rails/rails/pull/15155)) + +* Introduced an API to register new extensions for `rake notes`. + ([Pull Request](https://github.com/rails/rails/pull/14379)) + +* Introduced `Rails.gem_version` as a convenience method to return `Gem::Version.new(Rails.version)`. + ([Pull Request](https://github.com/rails/rails/pull/14101)) + + +Action Pack +----------- + +Please refer to the +[Changelog](https://github.com/rails/rails/blob/4-2-stable/actionpack/CHANGELOG.md) +for detailed changes. + +### Deprecations + +* Deprecated support for setting the `to:` option of a router to a symbol or a + string that does not contain a `#` character: + + get '/posts', to: MyRackApp => (No change necessary) + get '/posts', to: 'post#index' => (No change necessary) + get '/posts', to: 'posts' => get '/posts', controller: :posts + get '/posts', to: :index => get '/posts', action: :index + + ([Commit](https://github.com/rails/rails/commit/cc26b6b7bccf0eea2e2c1a9ebdcc9d30ca7390d9)) + +### Notable changes + +* The `*_filter` family methods has been removed from the documentation. Their + usage are discouraged in favor of the `*_action` family methods: + + after_filter => after_action + append_after_filter => append_after_action + append_around_filter => append_around_action + append_before_filter => append_before_action + around_filter => around_action + before_filter => before_action + prepend_after_filter => prepend_after_action + prepend_around_filter => prepend_around_action + prepend_before_filter => prepend_before_action + skip_after_filter => skip_after_action + skip_around_filter => skip_around_action + skip_before_filter => skip_before_action + skip_filter => skip_action_callback + + If your application is depending on these methods, you should use the + replacement `*_action` methods instead. These methods will be deprecated in + the future and eventually removed from Rails. + (Commit [1](https://github.com/rails/rails/commit/6c5f43bab8206747a8591435b2aa0ff7051ad3de), + [2](https://github.com/rails/rails/commit/489a8f2a44dc9cea09154ee1ee2557d1f037c7d4)) + +* Added HTTP method `MKCALENDAR` from RFC-4791 + ([Pull Request](https://github.com/rails/rails/pull/15121)) + +* `*_fragment.action_controller` notifications now include the controller and action name + in the payload. + ([Pull Request](https://github.com/rails/rails/pull/14137)) + +* Segments that are passed into URL helpers are now automatically escaped. + ([Commit](https://github.com/rails/rails/commit/5460591f0226a9d248b7b4f89186bd5553e7768f)) + +* Improved Routing Error page with fuzzy matching for route search. + ([Pull Request](https://github.com/rails/rails/pull/14619)) + +* Added option to disable logging of CSRF failures. + ([Pull Request](https://github.com/rails/rails/pull/14280)) + + +Action Mailer +------------- + +Please refer to the +[Changelog](https://github.com/rails/rails/blob/4-2-stable/actionmailer/CHANGELOG.md) +for detailed changes. + +### Notable changes + + +Active Record +------------- + +Please refer to the +[Changelog](https://github.com/rails/rails/blob/4-2-stable/activerecord/CHANGELOG.md) +for detailed changes. + +### Deprecations + +* Deprecated using `.joins`, `.preload` and `.eager_load` with associations that + depends on the instance state (i.e. those defined with a scope that takes an + argument) without replacement. + ([Commit](https://github.com/rails/rails/commit/ed56e596a0467390011bc9d56d462539776adac1)) + +* Deprecated passing Active Record objects to `.find` or `.exists?`. Call `#id` + on the objects first. + (Commit [1](https://github.com/rails/rails/commit/d92ae6ccca3bcfd73546d612efaea011270bd270), + [2](https://github.com/rails/rails/commit/d35f0033c7dec2b8d8b52058fb8db495d49596f7)) + +* Deprecated half-baked support for PostgreSQL range values with excluding + beginnings. We currently map PostgreSQL ranges to Ruby ranges. This conversion + is not fully possible because the Ruby range does not support excluded + beginnings. + + The current solution of incrementing the beginning is not correct and is now + deprecated. For subtypes where we don't know how to increment (e.g. `#succ` + is not defined) it will raise an `ArgumentError` for ranges with excluding + beginnings. + + ([Commit](https://github.com/rails/rails/commit/91949e48cf41af9f3e4ffba3e5eecf9b0a08bfc3)) + +### Notable changes + +* Added support for `#pretty_print` in `ActiveRecord::Base` objects. + ([Pull Request](https://github.com/rails/rails/pull/15172)) + +* PostgreSQL and SQLite adapters no longer add a default limit of 255 characters + on string columns. + ([Pull Request](https://github.com/rails/rails/pull/14579)) + +* `sqlite3:///some/path` now resolves to the absolute system path `/some/path`. + For relative paths, use `sqlite3:some/path` instead. (Previously, `sqlite3:///some/path` + resolved to the relative path `some/path`. This behaviour was deprecated on + Rails 4.1.) + ([Pull Request](https://github.com/rails/rails/pull/14569)) + +* Introduced `#validate` as an alias for `#valid?`. + ([Pull Request](https://github.com/rails/rails/pull/14456)) + +* `#touch` now accepts multiple attributes to be touched at once. + ([Pull Request](https://github.com/rails/rails/pull/14423)) + +* Added support for fractional seconds for MySQL 5.6 and above. + (Pull Request [1](https://github.com/rails/rails/pull/8240), [2](https://github.com/rails/rails/pull/14359)) + +* Added support for the `citext` column type in PostgreSQL adapter. + ([Pull Request](https://github.com/rails/rails/pull/12523)) + +* Added support for user-created range types in PostgreSQL adapter. + ([Commit](https://github.com/rails/rails/commit/4cb47167e747e8f9dc12b0ddaf82bdb68c03e032)) + +Active Model +------------ + +Please refer to the +[Changelog](https://github.com/rails/rails/blob/4-2-stable/activemodel/CHANGELOG.md) +for detailed changes. + +### Notable changes + +* Introduced `#validate` as an alias for `#valid?`. + ([Pull Request](https://github.com/rails/rails/pull/14456)) + + +Active Support +-------------- + +Please refer to the +[Changelog](https://github.com/rails/rails/blob/4-2-stable/activesupport/CHANGELOG.md) +for detailed changes. + +### Removals + +* Removed deprecated `Numeric#ago`, `Numeric#until`, `Numeric#since`, + `Numeric#from_now`. ([Commit](https://github.com/rails/rails/commit/f1eddea1e3f6faf93581c43651348f48b2b7d8bb)) + +* Removed deprecated string based terminators for `ActiveSupport::Callbacks`. + ([Pull Request](https://github.com/rails/rails/pull/15100)) + +### Deprecations + +* Deprecated `Class#superclass_delegating_accessor`, use `Class#class_attribute` + instead. ([Pull Request](https://github.com/rails/rails/pull/14271)) + +* Deprecated `ActiveSupport::SafeBuffer#prepend!` as `ActiveSupport::SafeBuffer#prepend` + now performs the same function. ([Pull Request](https://github.com/rails/rails/pull/14529)) + +### Notable changes + +* The `humanize` inflector helper now strips any leading underscores. + ([Commit](https://github.com/rails/rails/commit/daaa21bc7d20f2e4ff451637423a25ff2d5e75c7)) + +* Added `SecureRandom::uuid_v3` and `SecureRandom::uuid_v5`. + ([Pull Request](https://github.com/rails/rails/pull/12016)) + +* Introduce `Concern#class_methods` as an alternative to `module ClassMethods`, + as well as `Kernel#concern` to avoid the `module Foo; extend ActiveSupport::Concern; end` + boilerplate. ([Commit](https://github.com/rails/rails/commit/b16c36e688970df2f96f793a759365b248b582ad)) + +Credits +------- + +See the +[full list of contributors to Rails](http://contributors.rubyonrails.org/) for +the many people who spent many hours making Rails, the stable and robust +framework it is. Kudos to all of them. diff --git a/guides/source/upgrading_ruby_on_rails.md b/guides/source/upgrading_ruby_on_rails.md index 03d1f2a3a0..6800e71a3c 100644 --- a/guides/source/upgrading_ruby_on_rails.md +++ b/guides/source/upgrading_ruby_on_rails.md @@ -22,6 +22,12 @@ Rails generally stays close to the latest released Ruby version when it's releas TIP: Ruby 1.8.7 p248 and p249 have marshaling bugs that crash Rails. Ruby Enterprise Edition has these fixed since the release of 1.8.7-2010.02. On the 1.9 front, Ruby 1.9.1 is not usable because it outright segfaults, so if you want to use 1.9.x, jump straight to 1.9.3 for smooth sailing. +Upgrading from Rails 4.1 to Rails 4.2 +------------------------------------- + +NOTE: This section is a work in progress. + + Upgrading from Rails 4.0 to Rails 4.1 ------------------------------------- |