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Diffstat (limited to 'guides/source/4_2_release_notes.md')
| -rw-r--r-- | guides/source/4_2_release_notes.md | 54 |
1 files changed, 31 insertions, 23 deletions
diff --git a/guides/source/4_2_release_notes.md b/guides/source/4_2_release_notes.md index c3803aa856..848a125bbc 100644 --- a/guides/source/4_2_release_notes.md +++ b/guides/source/4_2_release_notes.md @@ -4,7 +4,7 @@ Ruby on Rails 4.2 Release Notes Highlights in Rails 4.2: * Active Job -* Asynchronous Mails +* Asynchronous mails * Adequate Record * Web Console * Foreign key support @@ -41,13 +41,23 @@ Jobs written with the Active Job API run on any of the supported queues thanks to their respective adapters. Active Job comes pre-configured with an inline runner that executes jobs right away. -Jobs often need to take Active Record objects as arguments, but we can't pass -fully-marshaled Ruby objects through many queueing systems. Active Job passes +Jobs often need to take Active Record objects as arguments. Active Job passes object references as URIs (uniform resource identifiers) instead of marshaling the object itself. The new [Global ID](https://github.com/rails/globalid) library builds URIs and looks up the objects they reference. Passing Active -Record objects as job arguments "just works:" Active Job passes a reference to -the object, then looks up the object from its reference. +Record objects as job arguments just works by using Global ID internally. + +For example, if `trashable` is an AR this job runs just fine + +```ruby +class TrashableCleanupJob < ActiveJob::Base + def perform(trashable, depth) + trashable.cleanup(depth) + end +end +``` + +with no serialization involved. See the [Active Job Basics](active_job_basics.html) guide for more information. @@ -109,22 +119,15 @@ The caching is not used in the following scenarios: ### Web Console -New applications generated from Rails 4.2 now come with the Web Console gem by -default. - -Web Console is a set of debugging tools for your Rails application. It adds an -interactive console on every error page and a `console` view and controller -helper. - -The interactive console on the error pages lets you execute code where the -exception originated. It's quite handy being able to introspect the state that -led to the error. +New applications generated from Rails 4.2 now come with the [Web +Console](https://github.com/rails/web-console) gem by default. Web Console adds +an interactive Ruby console on every error page and provides a `console` view +and controller helpers. -The `console` view helper launches an interactive console within the context of -the view where it is invoked. - -The `console` controller helper spawns an interactive console within the -context of the controller action it was invoked in. +The interactive console on error pages lets you execute code in the context of +the place where the exception originated. The `console` helper, if called +anywhere in a view or controller, launches an interactive console with the final +context, once rendering has completed. ### Foreign Key Support @@ -168,7 +171,7 @@ Previously, calling `render "foo/bar"` in a controller action was equivalent to instead. If you need to render a file, please change your code to use the explicit form (`render file: "foo/bar"`) instead. -### `respond_with` / class-level `respond_to` +### `respond_with` / Class-Level `respond_to` `respond_with` and the corresponding class-level `respond_to` have been moved to the [responders](https://github.com/plataformatec/responders) gem. Add @@ -250,8 +253,13 @@ application is using any of these spellings, you will need to update them: non-alphanumeric characters. ``` - a[href=/] => a[href="/"] - a[href$=/] => a[href$="/"] + # before + a[href=/] + a[href$=/] + + # now + a[href="/"] + a[href$="/"] ``` * DOMs built from HTML source containing invalid HTML with improperly |