move volunteer params into concern but not working

app/controllers/concerns/volunteer_attributes.rb

+module VolunteerAttributes
+  extend ActiveSupport::Concern
+
+  included do
+    def volunteer_attributes
+      [
+        :first_name, :last_name, :date_of_birth, :gender, :avatar, :street,
+        :zip, :city, :nationality, :additional_nationality, :email, :phone,
+        :profession, :education, :motivation, :experience, :expectations,
+        :strengths, :skills, :interests, :state, :duration, :man, :woman,
+        :family, :kid, :sport, :creative, :music, :culture, :training,
+        :german_course, :adults, :teenagers, :children, :region
+      ]
+    end
+  end
+end

app/controllers/volunteer_applications_controller.rb

 class VolunteerApplicationsController < ApplicationController
   include NestedAttributes
+  include VolunteerAttributes
   skip_before_action :authenticate_user!
 
   def new

app/controllers/volunteers_controller.rb

 class VolunteersController < ApplicationController
   include NestedAttributes
+  include VolunteerAttributes
   before_action :set_volunteer, only: [:show, :edit, :update, :destroy]
   before_action :set_state, only: [:update]