Ruby on rails 4 Rails 4.2.4 ActiveRecord::在LineItemsController#create中找不到RecordNot
我是Rails新手,在书中学习了使用Rails 4进行敏捷Web开发,并使用Rails 4.2.4版和Ruby 2.1.5版。我目前在迭代D3中,遇到了如下错误:Ruby on rails 4 Rails 4.2.4 ActiveRecord::在LineItemsController#create中找不到RecordNot,ruby-on-rails-4,Ruby On Rails 4,我是Rails新手,在书中学习了使用Rails 4进行敏捷Web开发,并使用Rails 4.2.4版和Ruby 2.1.5版。我目前在迭代D3中,遇到了如下错误: ActiveRecord::RecordNotFound in LineItemsController#create Couldn't find Product with 'id'= Rails.root: c:/Ruby on Rails/Agile Rail Development/depot Application Trac
ActiveRecord::RecordNotFound in LineItemsController#create
Couldn't find Product with 'id'=
Rails.root: c:/Ruby on Rails/Agile Rail Development/depot
Application Trace | Framework Trace | Full Trace<br>
app/controllers/line_items_controller.rb:29:in `create'
ActiveRecord::RecordNotFound in LineItemsController#create
找不到具有“id”的产品=
root:c:/Ruby-on-Rails/Agile-Rail-Development/depot
应用程序跟踪|框架跟踪|完整跟踪
app/controllers/line\u items\u controller.rb:29:in'create'
以下是它的图像链接:在这里,我将代码推送到GitHub:。
这是我的line\u items\u controller.rb文件
class LineItemsController < ApplicationController
include CurrentCart
before_action :set_cart, only: [:create]
before_action :set_line_item, only: [:show, :edit, :update, :destroy]
def create
product = Product.find(params[:product_id])
@line_item = @cart.line_items.build(product: product)
respond_to do |format|
if @line_item.save
format.html { redirect_to @line_item.cart, notice: 'Line item was successfully created.' }
format.json { render :show, status: :created, location: @line_item }
else
format.html { render :new }
format.json { render json: @line_item.errors, status: :unprocessable_entity }
end
end
end
private
def set_line_item
@line_item = LineItem.find(params[:id])
end
def line_item_params
params.require(:line_item).permit(:product_id, :cart_id)
end
end
class LineItemsController
非常感谢您的帮助,谢谢 没有
参数[:product\u id]
用这个
product = Product.find(params[:line_item][:product_id])
没有
参数[:product\u id]
用这个
product = Product.find(params[:line_item][:product_id])
该错误可在以下位置的行\u items
index.html.erb
视图中找到:
app/views/index.html.erb,第34行
你有点输入错误:
<%= button_to 'Add to Cart', line_items_path(prodcut_id: product) %>
该错误可在以下位置的行\u items
index.html.erb
视图中找到:
app/views/index.html.erb,第34行
你有点输入错误:
<%= button_to 'Add to Cart', line_items_path(prodcut_id: product) %>
抱歉,我在这里遇到了错误,这是错误消息:nil:class的未定义方法“[]”。我有点像被外键的概念卡住了,[:line_item]是nil吗?抱歉,但我在这里得到了错误,这是错误消息:nil:class的未定义方法“[]”。我有点被外键的概念所困扰,[:line_item]是零吗?