找不到 'id'= 的订单

Question

我确实关闭了我的浏览器但仍在渲染，本地主机服务器重新启动但错误仍然存在。

module ApplicationHelper
    def current_order
        if session[:order_id].nil?
            Order.find(session[:order_id])
        else
            Order.new
        end
    end
end

class OrderItemsController < ApplicationController
    def create
        @order = current_order
        @order_item = @order.order_items.new(order_item_params)
        @order.save
        session[:order_id] = @order.id
    end

    def update
        @order = current_order
        @order_item = @order.order_item.find(params[:id])
        @order_item.update(order_item_params)
        @order_items = @order.order_items

    end
    def destroy
        @order = current_order
        @order_item = @order.order_item.find(params[:id])
        @order_item.destroy
        @order_items = @order.order_items
    end
private
    def order_item_params
        param.require(:order_item).permit(:product_id, :p_quantity)
    end
end

我哪里做错了..?

get '/products' => 'products#home'
  resources :products
  resources :order_items
  resources :carts, only: [:show]
  root 'products#home'

我通过 rails 控制台创建了一个订单，但仍然呈现错误..#help 任何详细的答案..？

Answer 1

问题与 current_order 方法有关，您正在将 nil 值传递给查找方法 Order.find(nil)。您需要像这样交换 if 和 else 语句

def current_order
  if session[:order_id].nil?
    Order.new
  else
    Order.find(session[:order_id])   
  end
end

找不到 'id'= 的订单

Couldn't find Order with 'id'=

shopping-cart

ruby-on-rails