Turn `turbo_stream_actions` into a class method

Co-Authored-By: Georg Gadinger <nilsding@nilsding.org>

app/controllers/anonymous_block_controller.rb

@@ -1,11 +1,11 @@
 # frozen_string_literal: true
 
 class AnonymousBlockController < ApplicationController
+  include TurboStreamable
+
   before_action :authenticate_user!
 
-  def turbo_stream_actions = %i[create destroy]
-
-  include TurboStreamable
+  turbo_stream_actions :create, :destroy
 
   def create
     params.require :question

app/controllers/concerns/turbo_streamable.rb

@@ -3,18 +3,16 @@
 module TurboStreamable
   extend ActiveSupport::Concern
 
-  included do |controller|
-    around_action :handle_error, only: controller.respond_to?(:turbo_stream_actions) ? controller.turbo_stream_actions : []
+  class_methods do
+    def turbo_stream_actions(*actions)
+      around_action :handle_error, only: actions
+    end
   end
 
   def render_toast(message, success = true)
     turbo_stream.append("toasts", partial: "shared/toast", locals: { message:, success: })
   end
 
-  class_methods do
-    def render_toast = render_toast
-  end
-
   private
 
   def handle_error

app/controllers/settings/mutes_controller.rb

@@ -1,11 +1,11 @@
 # frozen_string_literal: true
 
 class Settings::MutesController < ApplicationController
+  include TurboStreamable
+
   before_action :authenticate_user!
 
-  def turbo_stream_actions = %i[create destroy]
-
-  include TurboStreamable
+  turbo_stream_actions :create, :destroy
 
   def index
     @users = current_user.muted_users