cocoon,嵌套无法创建和删除

时间:2013-09-16 04:40:04

标签: ruby-on-rails-4 devise cocoon-gem

在Rails 4中我想在设计卖家中创建一个包含产品的订单,我使用gem“cocoon”

class Seller < ActiveRecord::Base
has_many :orders

class Order < ActiveRecord::Base
belongs_to :seller
has_many :products
accepts_nested_attributes_for :products, allow_destroy: true

class Product < ActiveRecord::Base
belongs_to :order

我想在new.html中创建,但卖家不需要登录,我希望它可以通过URL

 new.html
<%- model_class = Order -%>   
<%= simple_form_for @order, :html => { :class => 'form-horizontal' } do |f| %> 
<%= f.simple_fields_for :products do |product| %>
<%= render 'product_fields', :f => product %>
<% end %>
<%= link_to_add_association 'add product', f, :products %>
<%= f.button :submit, :class => 'btn-primary' %>
<% end %>

in product_fields

<%= f.input :name %>
<%= f.input :description %>
<%= link_to_remove_association 'remove product', f %>

def new
 current_seller = Seller.find{|person|person.store==params[:store]}
 @order = current_seller.orders.new
end

def create
@seller = current_seller
@order = @seller.orders.new(order_create_params)

respond_to do |format|
  if @order.save
    format.html { redirect_to @order, notice: 'Order was successfully created.' }
    format.json { render action: 'show', status: :created, location: @order }
  else
    format.html { render action: 'new' }
    format.json { render json: @order.errors, status: :unprocessable_entity }
  end
end

端 像/ orders / new?store = test03

这样的网址
def order_create_params
  params.require(:order).permit(products_attributes: [:id, :name, :description, :_destroy]).merge(:seller_id => @seller.id)
end

我尝试了很多方法来构建,但现在“删除产品”没有工作,如果我使用Order.new只创建第一个产品可以按顺序保存(显示在开头)并且无法获取seller_id现在将导致nil的未定义方法`orders':我创建时的NilClass

如何定义我的创建动作以创建订单可以链接卖家并添加删除产品可以工作

1 个答案:

答案 0 :(得分:5)

product_fields部分内容需要divnested-fields类包围才能使移除工作正常。