date_selectの値がデータベースに登録できない

Question

自分の職歴を投稿する機能を作成しています。

job_category（職種）、annual_salary（年収）、position（役職）はデータベースに反映されるのですが、
start_date（仕事開始日）　と　end_date（仕事終了日）　がデータベースに反映されずに躓いております。

アドバイスをいただけますと幸いです。

views/careers/new.html.erb

<div>
  <%= form_with model: @career, local: true do |f| %>
  <%= f.text_field :job_category %>
  <%= f.text_field :annual_salary %>
  <%= f.text_field :position %>
  <%= f.label :start_date %>
  <%= f.date_select( :start_date, start_year: 1930, end_year: (Time.now.year - 18), default: Date.new(1989, 1, 1)) %>
  <%= f.label :end_date %>
  <%= f.date_select( :end_date, start_year: 1930, end_year: (Time.now.year - 18), default: Date.new(1989, 1, 1)) %>
  <%= f.submit "送信", class: "btn btn-primary withripple" %>
  <% end %>
</div>

controllers/careers_controller.rb

  def new
    @career = Career.new
  end

  def create
    Career.create(
      job_category: career_params[:job_category],
      annual_salary: career_params[:annual_salary],
      position: career_params[:position],
      start_date: career_params[:start_date],
      end_date: career_params[:end_date],
      user_id: current_user.id
    )
  end

  def career_params
    params.require(:career).permit(:job_category, :annual_salary, :position, :start_date, :end_date)
  end

エラー

Started POST "/careers" for 127.0.0.1 at 2018-12-09 14:07:37 +0900
Processing by CareersController#create as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"XXXXXXXXXXXXX/X/XXXXXX==", "career"=>{"job_category"=>"100", "annual_salary"=>"200", "position"=>"300", "start_date(1i)"=>"1989", "start_date(2i)"=>"1", "start_date(3i)"=>"4", "end_date(1i)"=>"1990", "end_date(2i)"=>"2", "end_date(3i)"=>"3"}, "commit"=>"送信"}
  User Load (0.8ms)  SELECT  `users`.* FROM `users` WHERE `users`.`id` = 9 ORDER BY `users`.`id` ASC LIMIT 1
  ↳ app/controllers/careers_controller.rb:72
   (0.4ms)  BEGIN
  ↳ app/controllers/careers_controller.rb:17
  User Load (0.7ms)  SELECT  `users`.* FROM `users` WHERE `users`.`id` = 9 LIMIT 1
  ↳ app/controllers/careers_controller.rb:17
  Career Create (4.5ms)  INSERT INTO `careers` (`job_category`, `created_at`, `updated_at`, `user_id`, `annual_salary`, `position`) VALUES ('100', '2018-12-09 14:07:37', '2018-12-09 14:07:37', 9, 200, '300')
  ↳ app/controllers/careers_controller.rb:17
   (81.8ms)  COMMIT
  ↳ app/controllers/careers_controller.rb:17
#<ActiveModel::Errors:0x00007f8901294e38 @base=#<Career id: 64, job_category: "100", created_at: "2018-12-09 05:07:37", updated_at: "2018-12-09 05:07:37", user_id: 9, annual_salary: 200, position: "300", start_date: nil, end_date: nil>, @messages={}, @details={}>
  Rendering careers/create.html.erb within layouts/application
  Rendered careers/create.html.erb within layouts/application (0.7ms)
Completed 200 OK in 722ms (Views: 613.2ms | ActiveRecord: 88.1ms)

"start_date(1i)"=>"1989", "start_date(2i)"=>"1", "start_date(3i)"=>"4", "end_date(1i)"=>"1990", "end_date(2i)"=>"2", "end_date(3i)"=>"3"

という(1i)〜(3i)がうまく情報渡せていないように見えます。

---

追記です。
controllerのcreateにて　career_params　を読み込むように変えてみましたが、
今度は　ROLLBACK　が起きて全て登録できなくなってしまいました…。

controllers/careers_controller.rb

  def new
    @career = Career.new
  end

  def create
    @career = Career.create(career_params)

    logger.debug @career.errors.inspect
  end

エラー：

Started POST "/careers" for 127.0.0.1 at 2018-12-09 22:40:58 +0900
Processing by CareersController#create as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"Q3E41N8ZMgNky4zx6TH/thUk2rVqQMmJpDprCBhbuUi+AjQINyLj6rz9h1hZxjzejUyrQ4xBtRBYbmOIOqLMkg==", "career"=>{"job_category"=>"111", "annual_salary"=>"2222", "position"=>"3333", "start_date(1i)"=>"1989", "start_date(2i)"=>"1", "start_date(3i)"=>"1", "end_date(1i)"=>"1989", "end_date(2i)"=>"1", "end_date(3i)"=>"1"}, "commit"=>"送信"}
  User Load (1.0ms)  SELECT  `users`.* FROM `users` WHERE `users`.`id` = 9 ORDER BY `users`.`id` ASC LIMIT 1
  ↳ app/controllers/careers_controller.rb:86
   (0.3ms)  BEGIN
  ↳ app/controllers/careers_controller.rb:36
   (2.0ms)  ROLLBACK
  ↳ app/controllers/careers_controller.rb:36
#<ActiveModel::Errors:0x00007fd55dc2fc88 @base=#<Career id: nil, job_category: "111", created_at: nil, updated_at: nil, user_id: nil, annual_salary: 2222, position: "3333", start_date: "1989-01-01", end_date: "1989-01-01">, @messages={:user=>["を入力してください"]}, @details={:user=>[{:error=>:blank}]}>
  Rendering careers/create.html.erb within layouts/application
  Rendered careers/create.html.erb within layouts/application (0.5ms)
Completed 200 OK in 278ms (Views: 225.5ms | ActiveRecord: 3.4ms)

Answer 1

下記で解決しました。
※「追記前」の方法で　start_date、end_date　のみ修正

controllers/careers_controller.rb

  def create
    @career = Career.create(
      job_category: career_params[:job_category],
      annual_salary: career_params[:annual_salary],
      position: career_params[:position],
      start_date: Date.new(career_params["start_date(1i)"]&.to_i, career_params["start_date(2i)"]&.to_i, career_params["start_date(3i)"]&.to_i),
      end_date: Date.new(career_params["end_date(1i)"]&.to_i, career_params["end_date(2i)"]&.to_i, career_params["end_date(3i)"]&.to_i),
      user_id: current_user.id
    )
  end