### 前提・実現したいこと商品登録とタグを登録したいです。タグを選択して登録するようにしたいですが、上手く行きません。 ### 発生している問題・エラーメッセージ ``` NoMethodError in StockItemsController#create undefined method `tag_word=' for #"5"}> ``` ### 該当のソースコード ```newhtml <%= form_with model: @stock_item, url: stock_items_path, local: true do |f| %>

<%= f.label :stock_item_manufacturer, "メーカー名", class: :form_name %>
<%= f.text_field :stock_item_manufacturer, class: :form_text, id:"item_manufacturer" %>

<%= f.label :stock_item_name, "商品名", class: :form_name %>
<%= f.text_field :stock_item_name, class: :form_text, id:"new_item_name" %>

<%= f.label :stock_item_standard, "規格", class: :form_name %>
<%= f.text_field :stock_item_standard, class: :form_text, id:"item_standard" %>

<%= f.label :stock_item_strage_condition, "保存方法", class: :form_name %>
<%= f.text_field :stock_item_strage_condition, class: :form_text, id:"item_strage_condition" %>

<%= f.label :stock_item_description, "商品説明", class: :form_name %>
<%= f.text_area :stock_item_description, class: :form__text, id:"item_description" %>

<%= f.label :tag_word, "タグ", class: :form_name %>
<%= f.collection_select(:tag_word, Tag.all, :id, :name, {}, {class: :form__text, id:"item_description"}) %>

<%= f.label :image, "新商品の画像", class: :form_name %>
<%= f.file_field :image, id:"item_image", class: :form_name %>

<%= f.submit "保存する", class: :send, class: :form_name %>

<% end %> ``` ```stockitemcontroller class StockItemsController < ApplicationController def index @stock_items = StockItem.all.order(created_at: :desc) end def new @stock_item = ItemsTag.new end def create @stock_item = ItemsTag.new(stock_item_params) if @stock_item.save return redirect_to root_path else render "new" end end def edit @stock_item = StockItem.find(params[:id]) end def update if @stock_item.update(stock_item_params) redirect_to contacts_path else render :edit end end def destroy @stock_item = StockItem.find(params[:id]) if @stock_item.destroy redirect_to root_path else render :index end end private def stock_item_params params.require(:items_tag).permit(:stock_item_manufacturer, :stock_item_name, :stock_item_standard, :stock_item_strage_condition, :stock_item_description, :image, :tag_word) end end ``` ```stockitemrb class StockItem < ApplicationRecord has_many :item_connects, dependent: :destroy has_one_attached :image extend ActiveHash::Associations::ActiveRecordExtensions has_many :tags, through: :item_connects end ``` ```tagrb class Tag < ActiveHash::Base self.data = [ { id: 1, name: '--' }, { id: 2, name: '和食' }, { id: 3, name: '洋食' }, { id: 4, name: '中華' }, { id: 5, name: '揚げ' }, { id: 6, name: '炒め' }, { id: 7, name: '湯せん' }, { id: 8, name: '焼き' }, { id: 9, name: '蒸し' }, { id: 10, name: '自然解凍' }, { id: 11, name: '鍋' }, { id: 12, name: '牛' }, { id: 13, name: '豚' }, { id: 14, name: '鶏' }, { id: 15, name: '海鮮' }, { id: 16, name: '山菜' }, { id: 17, name: '野菜' }, { id: 18, name: 'ラーメン' }, { id: 19, name: 'うどん' }, { id: 20, name: 'そば' }, { id: 21, name: 'パスタ' }, { id: 22, name: 'パン' }, { id: 23, name: 'ご飯' }, { id: 24, name: 'パン' }, { id: 25, name: '丼' }, { id: 26, name: 'オードブル' }, { id: 27, name: '弁当' }, { id: 28, name: '副菜' }, { id: 29, name: '先付' }, { id: 30, name: '椀種' }, { id: 31, name: '八寸' }, { id: 32, name: 'お子様' }, { id: 33, name: 'スイーツ' }, { id: 34, name: '洋菓子' }, { id: 35, name: '和菓子' }, { id: 36, name: '調味料' }, { id: 37, name: 'ドレッシング' }, { id: 38, name: 'タレ' }, { id: 39, name: '乾物' }, ] include ActiveHash::Associations has_many :item_connects has_many :stock_items, through: :item_connects end ``` ```ここに言語名を入力 class ItemConnect < ApplicationRecord belongs_to :stock_item extend ActiveHash::Associations::ActiveRecordExtensions belongs_to :tag end ``` ### 試したことアソシエーションの確認は問題なかったです。tag.rbの情報をcollection_selectにて運びたいですが、ここがうまく繋げてないんじゃないかと思います。よろしくお願いします。 ### 補足情報（FW/ツールのバージョンなど）ここにより詳細な情報を記載してください。

	@@ -1 +1 @@
1	- Rails form objectにて保存が~~上手くいか~~ない
1	+ Rails form objectにて片方のテーブルに保存ができない

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