Failed to save the new associated preference has_one association - ruby-on-rails

Question

I try to create a nested model form for the has_one preference. (i'm using Rails 4)
but i get the below error which i do not understand how to resolve. This happens in the case when a user has not completed the preference form (with validations for the attributes of preference in place)
terminal display of error
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>'
could one advise me where i am going wrong?
In my user, and preference model i have the following :
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
routes
Rails.application.routes.draw do
devise_for :users
resources :users do
resources :preferences
end
end
preference form
<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>

Answer 1

The Answer to the question: display of my create method was wrong. below is the correct code
def create
#preference = Preference.new(preference_params)
#preference.user = current_user
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

Answer 2

Your create method looks suspicious to me. Try the below instead
def create
#user = User.friendly.find(params[:user_id])
#preference = #user.preference.new(preference_params)
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