Upload file successful

app/controllers/confirmations_controller.rb

 class ConfirmationsController < Devise::ConfirmationsController
   def update_confirm
     @user = User.find_by(params[:user][:id])
-    @user.save_file(params[:user][:cv_name])
     @user.skip_password_validation = false
     @user.skip_fullname_validation = false
     if @user.update_attributes(user_params)
+      @user.save_file(params[:user][:cv_name])
       set_flash_message!(:notice, :confirmed)
       redirect_to root_path
     else

app/models/user.rb

@@ -19,10 +19,10 @@ class User < ApplicationRecord
     name_folder = 'upload'
     new_file_name_with_type = "#{new_name_file}." + file_type
 
-    image_root = "#{RAILS.root}"
+    upload_root = "#{Rails.root}/app/"
 
-    Dir.mkdir(image_root + "#{name_folder}")
-    File.open(image_root + "#{name_folder}/" + new_file_name_with_type, 'wb') do |f|
+    Dir.mkdir(upload_root + "#{name_folder}")
+    File.open(upload_root + "#{name_folder}/" + new_file_name_with_type, 'wb') do |f|
       f.write(file)
     end
   end