연결된 새 기본 설정 has_one 연결을 저장하지 못했습니다.

has_one 기본 설정에 대한 중첩 모델 양식을 만들려고합니다. (저는 Rails 4를 사용하고 있습니다)

하지만 해결 방법을 이해하지 못하는 아래 오류가 발생합니다. 이것은 사용자가 기본 설정 양식을 작성하지 않은 경우에 발생합니다 (기본 설정 속성에 대한 유효성 검사가있는 경우).

오류의 터미널 표시

ActiveRecord::RecordNotSaved - Failed to save the new associated preference.:
  activerecord (4.2.0) lib/active_record/associations/has_one_association.rb:43:in `block in replace'
  activerecord (4.2.0) lib/active_record/associations/has_one_association.rb:98:in `block in transaction_if'
  activerecord (4.2.0) lib/active_record/connection_adapters/abstract/database_statements.rb:213:in `block in transaction'
  activerecord (4.2.0) lib/active_record/connection_adapters/abstract/transaction.rb:188:in `within_new_transaction'
  activerecord (4.2.0) lib/active_record/connection_adapters/abstract/database_statements.rb:213:in `transaction'
  activerecord (4.2.0) lib/active_record/transactions.rb:220:in `transaction'
  activerecord (4.2.0) lib/active_record/associations/has_one_association.rb:98:in `transaction_if'
  activerecord (4.2.0) lib/active_record/associations/has_one_association.rb:33:in `replace'
  activerecord (4.2.0) lib/active_record/associations/singular_association.rb:17:in `writer'
  activerecord (4.2.0) lib/active_record/associations/builder/association.rb:123:in `preference='
  app/controllers/preferences_controller.rb:55:in `create'
  actionpack (4.2.0) lib/action_controller/metal/implicit_render.rb:4:in `send_action'
  actionpack (4.2.0) lib/abstract_controller/base.rb:198:in `process_action'
  actionpack (4.2.0) lib/action_controller/metal/rendering.rb:10:in `process_action'
  actionpack (4.2.0) lib/abstract_controller/callbacks.rb:20:in `block in process_action'
  activesupport (4.2.0) lib/active_support/callbacks.rb:117:in `call'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `block in halting'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `block in halting'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `block in halting'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `block in halting'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `block in halting'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `block in halting'
  activesupport (4.2.0) lib/active_support/callbacks.rb:151:in `block in halting_and_conditional'
  activesupport (4.2.0) lib/active_support/callbacks.rb:151:in `block in halting_and_conditional'
  activesupport (4.2.0) lib/active_support/callbacks.rb:151:in `block in halting_and_conditional'
  activesupport (4.2.0) lib/active_support/callbacks.rb:234:in `block in halting'
  activesupport (4.2.0) lib/active_support/callbacks.rb:308:in `block (2 levels) in halting'
  public_activity (1.5.0) lib/public_activity/utility/store_controller.rb:25:in `store_controller_for_public_activity'
  activesupport (4.2.0) lib/active_support/callbacks.rb:427:in `block in make_lambda'
  activesupport (4.2.0) lib/active_support/callbacks.rb:307:in `block in halting'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `block in halting'
  activesupport (4.2.0) lib/active_support/callbacks.rb:234:in `block in halting'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `block in halting'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `block in halting'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `block in halting'
  activesupport (4.2.0) lib/active_support/callbacks.rb:92:in `_run_callbacks'
  activesupport (4.2.0) lib/active_support/callbacks.rb:734:in `_run_process_action_callbacks'
  activesupport (4.2.0) lib/active_support/callbacks.rb:81:in `run_callbacks'
  actionpack (4.2.0) lib/abstract_controller/callbacks.rb:19:in `process_action'
  actionpack (4.2.0) lib/action_controller/metal/rescue.rb:29:in `process_action'
  actionpack (4.2.0) lib/action_controller/metal/instrumentation.rb:31:in `block in process_action'
  activesupport (4.2.0) lib/active_support/notifications.rb:164:in `block in instrument'
  activesupport (4.2.0) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
  activesupport (4.2.0) lib/active_support/notifications.rb:164:in `instrument'
  actionpack (4.2.0) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
  actionpack (4.2.0) lib/action_controller/metal/params_wrapper.rb:250:in `process_action'
  activerecord (4.2.0) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
  actionpack (4.2.0) lib/abstract_controller/base.rb:137:in `process'
  actionview (4.2.0) lib/action_view/rendering.rb:30:in `process'
  actionpack (4.2.0) lib/action_controller/metal.rb:195:in `dispatch'
  actionpack (4.2.0) lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
  actionpack (4.2.0) lib/action_controller/metal.rb:236:in `block in action'
  actionpack (4.2.0) lib/action_dispatch/routing/route_set.rb:73:in `dispatch'
  actionpack (4.2.0) lib/action_dispatch/routing/route_set.rb:42:in `serve'
  actionpack (4.2.0) lib/action_dispatch/journey/router.rb:43:in `block in serve'
  actionpack (4.2.0) lib/action_dispatch/journey/router.rb:30:in `serve'
  actionpack (4.2.0) lib/action_dispatch/routing/route_set.rb:802:in `call'
  warden (1.2.4) lib/warden/manager.rb:35:in `block in call'
  warden (1.2.4) lib/warden/manager.rb:34:in `call'
  rack (1.6.4) lib/rack/etag.rb:24:in `call'
  rack (1.6.4) lib/rack/conditionalget.rb:38:in `call'
  rack (1.6.4) lib/rack/head.rb:13:in `call'
  actionpack (4.2.0) lib/action_dispatch/middleware/params_parser.rb:27:in `call'
  actionpack (4.2.0) lib/action_dispatch/middleware/flash.rb:260:in `call'
  rack (1.6.4) lib/rack/session/abstract/id.rb:225:in `context'
  rack (1.6.4) lib/rack/session/abstract/id.rb:220:in `call'
  actionpack (4.2.0) lib/action_dispatch/middleware/cookies.rb:560:in `call'
  activerecord (4.2.0) lib/active_record/query_cache.rb:36:in `call'
  activerecord (4.2.0) lib/active_record/connection_adapters/abstract/connection_pool.rb:647:in `call'
  activerecord (4.2.0) lib/active_record/migration.rb:378:in `call'
  actionpack (4.2.0) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
  activesupport (4.2.0) lib/active_support/callbacks.rb:88:in `_run_callbacks'
  activesupport (4.2.0) lib/active_support/callbacks.rb:734:in `_run_call_callbacks'
  activesupport (4.2.0) lib/active_support/callbacks.rb:81:in `run_callbacks'
  actionpack (4.2.0) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
  actionpack (4.2.0) lib/action_dispatch/middleware/reloader.rb:73:in `call'
  actionpack (4.2.0) lib/action_dispatch/middleware/remote_ip.rb:78:in `call'
  better_errors (2.1.1) lib/better_errors/middleware.rb:84:in `protected_app_call'
  better_errors (2.1.1) lib/better_errors/middleware.rb:79:in `better_errors_call'
  better_errors (2.1.1) lib/better_errors/middleware.rb:57:in `call'
  actionpack (4.2.0) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
  web-console (2.3.0) lib/web_console/middleware.rb:28:in `block in call'
  web-console (2.3.0) lib/web_console/middleware.rb:18:in `call'
  actionpack (4.2.0) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
  railties (4.2.0) lib/rails/rack/logger.rb:38:in `call_app'
  railties (4.2.0) lib/rails/rack/logger.rb:20:in `block in call'
  activesupport (4.2.0) lib/active_support/tagged_logging.rb:68:in `block in tagged'
  activesupport (4.2.0) lib/active_support/tagged_logging.rb:26:in `tagged'
  activesupport (4.2.0) lib/active_support/tagged_logging.rb:68:in `tagged'
  railties (4.2.0) lib/rails/rack/logger.rb:20:in `call'
  quiet_assets (1.1.0) lib/quiet_assets.rb:27:in `call_with_quiet_assets'
  actionpack (4.2.0) lib/action_dispatch/middleware/request_id.rb:21:in `call'
  rack (1.6.4) lib/rack/methodoverride.rb:22:in `call'
  rack (1.6.4) lib/rack/runtime.rb:18:in `call'
  activesupport (4.2.0) lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call'
  rack (1.6.4) lib/rack/lock.rb:17:in `call'
  actionpack (4.2.0) lib/action_dispatch/middleware/static.rb:113:in `call'
  rack (1.6.4) lib/rack/sendfile.rb:113:in `call'
  railties (4.2.0) lib/rails/engine.rb:518:in `call'
  railties (4.2.0) lib/rails/application.rb:164:in `call'
  rack (1.6.4) lib/rack/content_length.rb:15:in `call'
  thin (1.5.1) lib/thin/connection.rb:81:in `block in pre_process'
  thin (1.5.1) lib/thin/connection.rb:79:in `pre_process'
  thin (1.5.1) lib/thin/connection.rb:54:in `process'
  thin (1.5.1) lib/thin/connection.rb:39:in `receive_data'
  eventmachine (1.0.9.1) lib/eventmachine.rb:193:in `run'
  thin (1.5.1) lib/thin/backends/base.rb:63:in `start'
  thin (1.5.1) lib/thin/server.rb:159:in `start'
  rack (1.6.4) lib/rack/handler/thin.rb:19:in `run'
  rack (1.6.4) lib/rack/server.rb:286:in `start'
  railties (4.2.0) lib/rails/commands/server.rb:80:in `start'
  railties (4.2.0) lib/rails/commands/commands_tasks.rb:80:in `block in server'
  railties (4.2.0) lib/rails/commands/commands_tasks.rb:75:in `server'
  railties (4.2.0) lib/rails/commands/commands_tasks.rb:39:in `run_command!'
  railties (4.2.0) lib/rails/commands.rb:17:in `<top (required)>'
  bin/rails:9:in `<top (required)>'
  spring (1.7.1) lib/spring/client/rails.rb:28:in `call'
  spring (1.7.1) lib/spring/client/command.rb:7:in `call'
  spring (1.7.1) lib/spring/client.rb:30:in `run'
  spring (1.7.1) bin/spring:49:in `<top (required)>'
  spring (1.7.1) lib/spring/binstub.rb:11:in `<top (required)>'
  /Users/ARTLoe/.rvm/rubies/ruby-2.3.0/lib/ruby/site_ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'
  bin/spring:13:in `<top (required)>'
  bin/rails:3:in `<main>'

내가 어디로 잘못 가고 있는지 조언 해 줄 수 있습니까?

내 사용자 및 기본 설정 모델에는 다음이 있습니다.

class User < ActiveRecord::Base
  has_one :preference, dependent: :destroy
  accepts_nested_attributes_for :preference
end

class Preference < ActiveRecord::Base
  validates_presence_of :category_idealethnicity, presence: true, message: "can't be blank"
  validates_presence_of :category_idealreligion, presence: true, message: "can't be blank"

  belongs_to :user
  has_and_belongs_to_many :category_idealethnicity, dependent: :destroy
  has_and_belongs_to_many :category_idealreligion, dependent: :destroy
end

users_controller

class UsersController < ApplicationController
  respond_to :html, :xml, :json
  before_action :authenticate_user!, :set_user, only: [:show, :edit, :update, :destroy]

  def index
    ...
  end

  def show
    ....
  end

  def edit
    ...
  end

  def update
    ...
  end

  private
  def set_user
    @user = User.friendly.find(params[:id])
  end

  def user_params
    params.require(:user).permit(:email, :firstname, preference_attributes: [:town, category_idealreligion_ids: [], category_idealsmoke_ids: []])
  end
end

preferences_controller

class PreferencesController < ApplicationController
  before_action :authenticate_user!, :set_preference, only: [:show, :edit, :update, :destroy]

  def index
    @preferences = Preference.all
  end

  def show
    ...
  end

  def new
    @users = User.random
    @user = current_user
    @preference = @user.build_preference
  end

  def edit
    ...
  end

  def create
    @user = User.friendly.find(params[:user_id])
    @user.preference = Preference.new(preference_params)
    @preference = @user.preference

    respond_to do |format|
      if @preference.save
        format.html { redirect_to @preference, notice: 'Preference was successfully created.' }
        format.json { render :show, status: :created, location: @preference }
      else
        format.html { render :new }
        format.json { render json: @preference.errors, status: :unprocessable_entity }
      end
    end
  end

  def update
    ...
  end

  def destroy
    ...
  end

  private
  def set_preference
    @preference = Preference.find(params[:id])
  end

  def preference_params
    params.require(:preference).permit(:town, :user_id, category_idealethnicity_ids: [], category_idealreligion_ids: [])
  end
end

노선

Rails.application.routes.draw do
  devise_for :users
  resources :users do
    resources :preferences
  end
end

선호 양식

<div>
  <%= simple_form_for [@user, @preference] do |f| %>
    <%= f.error_notification %>
    <%= f.association :category_idealethnicity, collection: CategoryIdealethnicity.all, prompt: "select", label: false, as: :check_boxes %>
    <%= f.association :category_idealreligion, collection: CategoryIdealreligion.all, prompt: "select", label: false, as: :check_boxes %>
    <div class="form-actions">
      <%= f.button :submit %>
    </div>
  <% end %>
</div>