🤑

商品合計金額、請求金額合計とかの表示

2023/07/29に公開

Rails

初心者

tech

🍍やりたいこと

注文履歴詳細ページでの各商品の単価、数量、小計の表示。
注文全部の商品合計金額、送料、請求金額の合計の表示。など

🍍記述

admin/orders_controler.rb

 def show
     @customer = Customer.find(params[:id])
     @order = Order.find(params[:id])
     @item = Item.find(params[:id])
     @order_items = @order.order_details.all 
     @order_details = @order.order_details.all
     @total_item_amount = @order_details.sum { |order_detail| order_detail.subtotal }
     @order = Order.find(params[:id])
  end

admin/orders/show.html.erb

<tbody>
<% @order_items.each do |item| %>
 <tr>
  <td><%= item.item.name %></td>
  <td><%= item.item.with_tax_price %></td>
  <td><%= item.quantity %></td>
  <td><%= item.subtotal %></td>
  <td>
  <%= form_with model: item, url: admin_order_detail_path(item.id), method: :patch do |f| %>
     <%= f.select :making_status, OrderDetail.making_statuses.keys.map  %>
     <%= f.submit '更新', class:"btn btn-outline-success"  %>
  <% end %>
  </td>
 </tr>
<% end %>
</tbody>

 <table>
    <thred>
      <tr>
	<th>商品合計</th>
	<td><%= @order.total_item_amount.to_s(:delimited) %></td>
	<td>円</td>
      </tr>
      <tr>
	<th>送料</th>
	<td><%= @order.postage.to_s(:delimited) %></td>
	<td>円</td>
      </tr>
      <tr>
	<th>請求金額合計</th>
	<td><strong><%= @order.total_amount.to_s(:delimited) %></strong></td>
	<td><strong>円</strong></td>
      </tr>
    </thred>
  </table>

model/order_details.rb

 def subtotal #数量×商品税込み価格
    quantity * item.with_tax_price
 end

model/item.rb

TAX_RATE = 10 #%表記

def with_tax_price #税込み価格
   (price * (1 + TAX_RATE * 0.01)).floor
end

def total_item_amount #アイテム合計金額
   order_details.sum { |order_detail| order_detail.subtotal }
end