Question

如何将产品分为三个部分（三个不同的过滤器，如：product_1，product_2，product_3），每个部分只需选择一个产品

提交后。我应该为一个订单保存所有产品。

我有4张桌子：用户命令订单详细信息产品

class Order < ActiveRecord::Base
  has_many :order_details
  belongs_to :user
  has_many :products, through: :order_details
  accepts_nested_attributes_for :order_details
end

class OrderDetail < ActiveRecord::Base
 belongs_to :order
 belongs_to :product
end

class Product < ActiveRecord::Base
  has_many :order_details
  has_many :orders, through: :order_details
  def self.get_first_course
    Product.where(product_type: "exem_product_1")
  end
  def self.get_main_course
    Product.where(product_type: "exem_product_2")
  end
  def self.get_drink
    Product.where(product_type: "exem_product_3")
  end
end

我不确定如何为这种情况编写强大的参数以及如何创建该对象来保存数据。

class OrdersController < ApplicationController
 before_action :authenticate_user!
 def index
   @order = Order.new
   #I think need something like this..?!
   #@order.order_details.build
 end

 def create

 end

 private

 def order_params
   params.require(:order).permit(:date, :product_id => [])
 end
end

Answer 1

您可以在控制器中执行以下操作：

class OrdersController < ApplicationController
 before_action :authenticate_user!
 def index
   @order = Order.all
 end

 def new
   @order = Order.new
 end

 def create
   @order = current_user.orders.new(order_params)
   if @order.save
    #your actions here
   else
    #your actions to rescue error
   end
 end

 private

 def order_params
   params.require(:order).permit(:date, :product_id => [])
 end
end

要使用简单的单选按钮集合，您必须执行以下操作：

= simple_form_for(@order, html: {:class => 'well form-horizontal', :method  => :post, :action=> :create }) do |f|
 .col-xs-12.col-sm-6.col-md-8
   = render 'shared/error_messages', object: f.object
   = f.collection_radio_buttons :product_ids, Product.get_first_course, :id, :product_name, :item_wrapper_class => 'inline'
   %hr
   = f.collection_radio_buttons :product_ids, Product.get_main_course, :id, :product_name, :item_wrapper_class => 'inline'
   %hr
   = f.collection_radio_buttons :product_ids, Product.get_drink, :id, :product_name,,:item_wrapper_class => 'inline'
   %hr
   = f.association :products, as: :radio_buttons
   = f.button :submit, class: "btn btn-primary"

Answer 2

用于选择集合并从表单中获取3个不同的ID，这对我有用..

交的： ~products_ids =＆gt; {array ids}

= simple_form_for @order do |f|
 = render 'shared/error_messages', object: f.object
 = simple_fields_for :product_ids do |product|
   = product.collection_select(nil, Product.get_first_course, :id, :product_name,
                              {prompt: "Select first course" },class: "form-control product-select")
   = product.collection_select(nil, Product.get_main_course, :id, :product_name,
                          {prompt: "Select first course"},class: "form-control product-select")

简单的表单 - 选择集合并设置has_many通过

2 个答案: