Use "instance_accessor" for flash types class attribute

2 files changed, 3 insertions, 4 deletions

diff --git a/actionpack/lib/action_controller/metal/flash.rb b/actionpack/lib/action_controller/metal/flash.rb
index 47e71371e3..b078beb675 100644
--- a/actionpack/lib/action_controller/metal/flash.rb
+++ b/actionpack/lib/action_controller/metal/flash.rb
@@ -3,10 +3,10 @@ module ActionController #:nodoc:
     extend ActiveSupport::Concern
 
     included do
-      class_attribute :_flash_types, :instance_methods => false
+      class_attribute :_flash_types, instance_accessor: false
       self._flash_types = []
 
-      delegate :flash, :to => :request
+      delegate :flash, to: :request
       add_flash_types(:alert, :notice)
     end
 
@@ -14,7 +14,7 @@ module ActionController #:nodoc:
       def add_flash_types(*types)
         types.each do |type|
           next if _flash_types.include?(type)
-          
+
           define_method(type) do
             request.flash[type]
           end
diff --git a/actionpack/test/controller/flash_test.rb b/actionpack/test/controller/flash_test.rb
index f91aa246f4..8340aab4d2 100644
--- a/actionpack/test/controller/flash_test.rb
+++ b/actionpack/test/controller/flash_test.rb
@@ -220,7 +220,6 @@ class FlashIntegrationTest < ActionDispatch::IntegrationTest
   SessionSecret = 'b3c631c314c0bbca50c1b2843150fe33'
 
   class TestController < ActionController::Base
-
     add_flash_types :bar
 
     def set_flash