Question

求解：见底

我正在构建许多产品的订购系统，其中HBTM从Join Table到anotherModel，但在创建和编辑嵌套表单的新记录时我遇到了一些问题。

我尝试了其他问题的许多解决方案，并遵循了this或this等教程，但没有解决我的问题。

产品型号：

class Product < ApplicationRecord
  belongs_to :subcategory

  has_many :order_products, inverse_of: :product
  has_many :order, :through => :order_products
end

订单型号：

class Order < ApplicationRecord
  has_many :order_products, inverse_of: :order
  has_many :products, :through => :order_products

  accepts_nested_attributes_for :products, reject_if: :all_blank, allow_destroy: true
end

加入表：

class OrderProduct < ApplicationRecord
  belongs_to :order
  belongs_to :product

  has_and_belongs_to_many :ingredients
  accepts_nested_attributes_for :ingredients, reject_if: :all_blank, allow_destroy: true    
end

与联接表相关联的成分模型:( 多对多以保存订单中每个产品的添加成分）

class Ingredient < ApplicationRecord
  has_and_belongs_to_many :order_products
end

订单控制器：

  # GET /orders/new
  def new
    @order = Order.new
  end

  # GET /orders/1/edit
  def edit
  end

  # POST /orders
  # POST /orders.json
  def create
    @order = Order.new(order_params)

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

    def order_params
      params.require(:order).permit(:subtotal, :discount, :total,
      order_products_attributes: [[:id, :order_id, :product_id , :_destroy]])
    end

查看：

<%= simple_form_for(@order) do |f| %>
  <%= f.error_notification %>

  <div class="form-inputs">
    <%= f.input :subtotal %>
    <%= f.input :discount %>
    <%= f.input :total %>
  </div>

  <%= f.simple_fields_for :order_products do |o| %>
      <%= render 'order_product_fields', f: o %>
  <% end %>

  <%= link_to_add_association "aggiungi prodotto", f, :order_products %>

  <div class="form-actions">
    <%= f.button :submit %>
  </div>
<% end %>

部分:(由于自动添加空白字段，无法添加cocoon的销毁链接：未定义方法`reflect_on_association'为NilClass：Class ）

<div class="nested-fields order-product-fields">
  <%= f.input :product %>
  <%= f.input :order %>

  <%= f.check_box :_destroy %>

</div>

我在控制台上得到了这个：

 Parameters: {"utf8"=>"✓", "authenticity_token"=>"PRNzrnxk/jrsAyPK5OzFxix2hIUmjCeWpD8Fkuhuhx8Wp3/xYTbTTvsfQkhnMDEBNnC/iNL46kl68XR7skb03g==", "order"=>{"subtotal"=>"", "discount"=>"", "total"=>"", "order_products"=>{"product"=>"", "order"=>"", "_destroy"=>"0"}}, "commit"=>"Create Order"}
Unpermitted parameter: order_products

我的烦恼是：编辑：每个点上的解决方案

当我加载订单页面时，会自动创建嵌套属性的空白字段（）

订单模型上的nested_attributes错误：

accepts_nested_attributes_for **:order_products**, reject_if: :all_blank, allow_destroy: true

提交表单时，不会创建任何条目。（但我可以通过控制台添加产品.ex：order.products＆lt;＆lt; product1）
当我通过cocoon的添加链接添加更多产品时，仅首先发送到控制器
不知道如何在Order

有这个工作：

成分模型：

has_many :ingredient_order_products, inverse_of: :ingredient
has_many :order_products, :through => :ingredient_order_products

IngredientOrderProduct型号：

  belongs_to :ingredient
  belongs_to :order_product

订购产品型号：

  has_many :ingredient_order_products, inverse_of: :order_product
  has_many :ingredients, :through => :ingredient_order_products
  accepts_nested_attributes_for :ingredient_order_products, reject_if: :all_blank, allow_destroy: true

订单控制器：

def order_params
  params.require(:order).permit(:customer_id, :subtotal, :discount, :total,
  order_products_attributes: [[:id, :order_id, :product_id, :qty, :gift, :_destroy,
    ingredient_order_products_attributes: [:id, :order_id, :ingredient_id, :_destroy]]])
end

_order_product_fields部分：

  <div id="ingredient">
    <%= f.simple_fields_for :ingredient_order_products do |ingredient| %>
      <%= render 'ingredient_order_product_fields', f: ingredient %>
    <% end %>
    <%= link_to_add_association "Aggiungi Ingrediente", f, :ingredient_order_products %>
  </div>

Rails 5有很多通过嵌套表单和Cocoon

0 个答案: