每当我尝试从商品的显示页面添加商品到购物车时，我一直收到以下路由错误：* * ActionController：：RoutingError（没有与[GET] "/order_items "匹配的路由）**.在控制台上检查时，没有项目添加到购物车。

• • 路由. rb**

Rails.application.routes.draw do
  devise_for :users
  root to: 'articles#index'

  resources :articles, except: [:destroy]
  resources :order_items, only: [:create]
  resources :orders do
    get '/current', to: 'orders#current', on: :collection
    resources :checkout, only: [:create]
  end
end

• • 订单_项目. rb**

class OrderItem < ApplicationRecord
  belongs_to :order
  belongs_to :article
end

• • 铁路路线**

order_items POST   /order_items(.:format)  order_items#create

• • 订单物料控制器. rb**

class OrderItemsController < ApplicationController
  before_action :authenticate_user!

  def create
    order_item = current_order.order_items.new(article_id: params[:article_id])
    if order_item.save
      redirect_to root_path, notice: 'Successfully added to cart.'
    else
      redirect_to root_path, alert: 'Error adding to cart.'
    end
  end

  def current_order
    order = Order.where(user_id: current_user.id, status: 'created').order(updated_at: :desc).last
    order || Order.create(user_id: current_user.id)
  end
end

• • 显示. html. erb**

<% if user_signed_in? %>
  <%= link_to 'Add to cart', order_items_path(article_id: params[:id]), method: :post %>
<% else  %>
   <%= link_to 'Log In', new_user_session_path , class: "text-blue-500" %>
<% end  %>