Question

所以我被困在这几个小时。我有一个有很多通过关联的应用程序，我正在尝试将父资源的id传递给孩子。路由确实有效，我可以浏览甚至创建新对象，但是url并没有显示路径中的id。

预期＆amp;期望的结果

http://127.0.0.1:3000/locations/1/groups/1/products/1

当前结果

http://127.0.0.1:3000/locations/location/groups/group/products/1

的routes.rb

...
resources :locations do
 resources :groups do
  resources :products
 end
end
...

products_controller.rb 我的所有控制器都设置与此类似。

class ProductsController < ApplicationController
  before_action :set_product, only: [:show, :edit, :update, :destroy]

  def index
    @locations = Location.all
    @products = Product.all
    @groups = Group.all
  end

  def show
    @product = Product.find(params[:id])
  end

  def new
    @product = Product.new
  end

  def edit
    @product = Product.find(params[:id])
  end

  def create
    @product = Product.new(product_params)

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

  def update
    respond_to do |format|
      if @product.update(product_params)
        format.html { redirect_to location_group_product_path(@product), notice: 'Product was successfully updated.' }
        format.json { render :show, status: :ok, location: @product }
      else
        format.html { render :edit }
        format.json { render json: @product.errors, status: :unprocessable_entity }
      end
    end
  end

  def destroy
    @product.destroy
    respond_to do |format|
      format.html { redirect_to location_group_products_path(@product), notice: 'Product was successfully destroyed.' }
      format.json { head :no_content }
    end
  end

  private

    def set_product
      @product = Product.find(params[:id])
    end

    def product_params
      params.require(:product).permit(:name, :location_id, :group_id, :product_id)
    end
end

products.html.rb

<h1>Products</h1>

<table>
  <thead>
    <tr>
      <th>Name</th>
      <th colspan="3"></th>
    </tr>
  </thead>

  <tbody>
    <% @products.each do |product| %>
      <tr>
        <td><%= product.name %></td>
        <td><%= link_to 'Show', location_group_product_path(:location, :group, product) %></td>
        <td><%= link_to 'Edit', edit_location_group_product_path(:location, :group, product.id) %></td>
        <td><%= link_to 'Destroy', location_group_product_path(:location, :group, product.id), method: :delete, data: { confirm: 'Are you sure?' } %></td>
      </tr>
    <% end %>
  </tbody>
</table>

<br>

<%= link_to 'New Product', new_location_group_product_path %>

Answer 1

您应该传递位置和组的ID（或对象）而不仅仅是它们的符号。像这样：

location_group_product_path(product.group.location, product.group, product)
edit_location_group_product_path(product.group.location, product.group, product)

将父资源ID传递给Rails中的子资源5

1 个答案: