Add option for class_attribute default (#29270)

* Allow a default value to be declared for class_attribute

* Convert to using class_attribute default rather than explicit setter

* Removed instance_accessor option by mistake

* False is a valid default value

* Documentation

2 files changed, 3 insertions, 8 deletions

diff --git a/activejob/lib/active_job/queue_name.rb b/activejob/lib/active_job/queue_name.rb
index 352cf62424..d83113af60 100644
--- a/activejob/lib/active_job/queue_name.rb
+++ b/activejob/lib/active_job/queue_name.rb
@@ -32,11 +32,8 @@ module ActiveJob
     end
 
     included do
-      class_attribute :queue_name, instance_accessor: false
-      class_attribute :queue_name_delimiter, instance_accessor: false
-
-      self.queue_name = default_queue_name
-      self.queue_name_delimiter = "_" # set default delimiter to '_'
+      class_attribute :queue_name, instance_accessor: false, default: default_queue_name
+      class_attribute :queue_name_delimiter, instance_accessor: false, default: "_"
     end
 
     # Returns the name of the queue the job will be run on.
diff --git a/activejob/lib/active_job/queue_priority.rb b/activejob/lib/active_job/queue_priority.rb
index b02202fcc8..db8d9178a4 100644
--- a/activejob/lib/active_job/queue_priority.rb
+++ b/activejob/lib/active_job/queue_priority.rb
@@ -27,9 +27,7 @@ module ActiveJob
     end
 
     included do
-      class_attribute :priority, instance_accessor: false
-
-      self.priority = default_priority
+      class_attribute :priority, instance_accessor: false, default: default_priority
     end
 
     # Returns the priority that the job will be created with