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-rw-r--r--guides/source/6_0_release_notes.md16
-rw-r--r--guides/source/upgrading_ruby_on_rails.md36
2 files changed, 52 insertions, 0 deletions
diff --git a/guides/source/6_0_release_notes.md b/guides/source/6_0_release_notes.md
index 14528d1cde..e6fb15c09c 100644
--- a/guides/source/6_0_release_notes.md
+++ b/guides/source/6_0_release_notes.md
@@ -92,6 +92,22 @@ Please refer to the [Changelog][action-cable] for detailed changes.
### Notable changes
+* The ActionCable javascript package has been converted from CoffeeScript
+ to ES2015, and we now publish the source code in the npm distribution.
+
+ This allows ActionCable users to depend on the javascript source code
+ rather than the compiled code, which can produce smaller javascript bundles.
+
+ This change includes some breaking changes to optional parts of the
+ ActionCable javascript API:
+
+ - Configuration of the WebSocket adapter and logger adapter have been moved
+ from properties of `ActionCable` to properties of `ActionCable.adapters`.
+
+ - The `ActionCable.startDebugging()` and `ActionCable.stopDebugging()`
+ methods have been removed and replaced with the property
+ `ActionCable.logger.enabled`.
+
Action Pack
-----------
diff --git a/guides/source/upgrading_ruby_on_rails.md b/guides/source/upgrading_ruby_on_rails.md
index 2682c6ffd7..1f30ce1971 100644
--- a/guides/source/upgrading_ruby_on_rails.md
+++ b/guides/source/upgrading_ruby_on_rails.md
@@ -97,6 +97,42 @@ If you require your cookies to be read by 5.2 and older, or you are still valida
to allow you to rollback set
`Rails.application.config.action_dispatch.use_cookies_with_metadata` to `false`.
+### ActionCable javascript API Changes
+
+The ActionCable javascript package has been converted from CoffeeScript
+to ES2015, and we now publish the source code in the npm distribution.
+
+This change includes some breaking changes to optional parts of the
+ActionCable javascript API:
+
+- Configuration of the WebSocket adapter and logger adapter have been moved
+ from properties of `ActionCable` to properties of `ActionCable.adapters`.
+ If you are currently configuring these adapters you will need to make
+ these changes when upgrading:
+
+ ```diff
+ - ActionCable.WebSocket = MyWebSocket
+ + ActionCable.adapters.WebSocket = MyWebSocket
+ ```
+ ```diff
+ - ActionCable.logger = myLogger
+ + ActionCable.adapters.logger = myLogger
+ ```
+
+- The `ActionCable.startDebugging()` and `ActionCable.stopDebugging()`
+ methods have been removed and replaced with the property
+ `ActionCable.logger.enabled`. If you are currently using these methods you
+ will need to make these changes when upgrading:
+
+ ```diff
+ - ActionCable.startDebugging()
+ + ActionCable.logger.enabled = true
+ ```
+ ```diff
+ - ActionCable.stopDebugging()
+ + ActionCable.logger.enabled = false
+ ```
+
Upgrading from Rails 5.1 to Rails 5.2
-------------------------------------