Rails购物车-未添加到当前订单 [英] Rails Shopping Cart - not adding to current order

问题描述

在这里滑行新手。

我正在构建一个基本的购物车，并且之前运行良好。它没有更改任何代码（我git reset --hard到我上次提交的地方很难工作）就坏了。 （？！？）以下是细分：

Github回购： https://github.com/christinecha/michaka

• 创建产品。 ✓




• 将产品ID添加到新的订单商品。 ✓




• 将订单商品添加到订单中。 ✓

-

可能的问题

！ -创建订单商品时，新订单会不断创建=购物车始终为空。

！ -购物车未连接到正确的订单ID

！ -触发了新会话=新订单=问题

-

订购商品控制器

 类OrderItemsController< ApplicationController 
 def创建
 @order =当前订单
 @order_item = @ order.order_items.new（order_item_params）
 @ order.save 
 session [：order_id] = @ order.id 
结束
 
 def更新
 @order =当前订单
 @order_item = @ order.order_items.find（params [：id]）
 @ order_item.update_attributes（order_item_params）
 @order_items = @ order.order_items 
结束
 
 def销毁
 @order =当前命令
 @order_item = @order .order_items.find（params [：id]）
 @ order_item.destroy 
 @order_items = @ order.order_items 
结束
私人
 def order_item_params 
 params.require（：order_item）.permit（：quantity，：product_id）
结束
结束
  

SESSION_STORE.RB

  Rails.application.config.session_store：cookie_store，密钥：'_bead-project_session'
  

订购模型

 类订单< ActiveRecord :: Base 
属性_to：order_status 
 has_many：order_items 
 before_create：set_order_status 
 before_save：update_subtotal 
 
 def小计
 order_items.collect { | oi | oi.valid？ ？ （oi.quantity * oi.unit_price）：0} .sum 
结束
 
 def subtotal_cents 
小计* 100 
结束
 
 
私人
 def set_order_status 
 self.order_status_id = 1 
结束
 
 def update_subtotal 
 self [：小计] =小计
结束
 
结束
  

应用控制器

  class ApplicationController< ActionController :: Base 
 protected_from_forgery具有：：exception 
 helper_method：current_order 
 
 def current_order 
 if！session [：order_id] .nil？ 
 Order.find（session [：order_id]）
其他
 Order.new 
结束
结束
结束
  

解决方案

看起来ProductsController＃create被调用了两次，一次是html格式，一次是json。 / p>

我认为您正在通过ajax提交一些数据，但仍在从表单中进行发布请求。但是，控制器的 format.html 响应将在所有JavaScript操作完成之前重定向。

您只需保存@order并从OrderItemsController＃create设置会话，该会话在您的初始ajax（）之后由js调用。成功，当接收到重定向时它是不完整的。

我认为点击会发生以下情况：

1. ajax发布请求和常规表单发布


2. ajax成功->提交#order_item_product_id表单


3. 通过原始表单后回复重定向

重新设计提交过程以通过常规表单发布或完全通过js提交。例如，您可以从表单中禁用发布，并将OrderItemsController＃create更改为最终重定向（通过js） render：js => window.location.href =‘/ cart’;

Rails noob here.

I'm building a basic shopping cart and it was working perfectly before. Without changing any code (I git reset --hard to my prev commit where it was working) it broke. (?!?) Here's the breakdown:

Github Repo: https://github.com/christinecha/michaka

• Creates a product. ✓

• Adds Product ID to a new Order Item. ✓

• Adds Order Item to an Order. ✓

--

Possible Issues

! - New Orders keep being created as you create Order Items = cart is always empty.

! - Cart is not connecting to the right Order ID

! - New sessions are being triggered = new Orders = problem

--

ORDER ITEMS CONTROLLER

    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_items.find(params[:id])
    @order_item.update_attributes(order_item_params)
    @order_items = @order.order_items
  end

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

SESSION_STORE.RB

Rails.application.config.session_store :cookie_store, key: '_bead-project_session'

ORDER MODEL

class Order < ActiveRecord::Base
  belongs_to :order_status
  has_many :order_items
  before_create :set_order_status
  before_save :update_subtotal

  def subtotal
    order_items.collect { |oi| oi.valid? ? (oi.quantity * oi.unit_price) : 0 }.sum
  end

  def subtotal_cents
    subtotal * 100
  end


private
  def set_order_status
    self.order_status_id = 1
  end

  def update_subtotal
    self[:subtotal] = subtotal
  end

end

APPLICATION CONTROLLER

class ApplicationController < ActionController::Base
  protect_from_forgery with: :exception
  helper_method :current_order

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

解决方案

It looks like ProductsController#create is called twice, once with format html and once as json.

I think you're submitting some of your data via ajax but still doing a post request from the form. However your controller, in it's format.html response is redirecting before all of the javascript actions have completed.

Since you only save @order and set the session from OrderItemsController#create which is called by js after your initial ajax().success, it is incomplete when the redirect is received.

What I think happens on click:

1. ajax post request AND regular form post
2. ajax success -> submit #order_item_product_id form
3. redirected by original form post response

I would suggest either redesigning the submit process to submit through regular form post or entirely through js. For example you could disable post from the form and change OrderItemsController#create to finally redirect (via js) render :js => "window.location.href = '/cart';"

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