adding volunteer attributes with sub concern includes

app/controllers/concerns/volunteer_attributes.rb

@@ -2,6 +2,7 @@ module VolunteerAttributes
   extend ActiveSupport::Concern
 
   included do
+    include ContactAttributes
     def volunteer_attributes
       [
         :date_of_birth, :gender, :avatar, :nationality, :additional_nationality,
@@ -9,7 +10,8 @@ module VolunteerAttributes
         :strengths, :skills, :interests, :state, :duration, :man, :woman,
         :family, :kid, :sport, :creative, :music, :culture, :training,
         :german_course, :adults, :teenagers, :children, :region, :state,
-        :first_language, :title, first_language_attributes: [:id, :language]
+        :first_language, :title, :first_name, :last_name,
+        contact_attributes, language_skills_attributes, schedules_attributes
       ]
     end
   end

app/controllers/volunteers_controller.rb

 class VolunteersController < ApplicationController
   include NestedAttributes
   include VolunteerAttributes
-  include ContactAttributes
   before_action :set_volunteer, only: [:show, :edit, :update, :destroy]
 
   def index
@@ -64,9 +63,6 @@ class VolunteersController < ApplicationController
   end
 
   def volunteer_params
-    params.require(:volunteer).permit(
-      volunteer_attributes, language_skills_attributes, schedules_attributes,
-      contact_attributes
-    )
+    params.require(:volunteer).permit(volunteer_attributes)
   end
 end