Ruby on rails Rails应用程序-嵌套表单在存在子记录时停止工作

在我的应用程序中有产品和图像，我通过一个简单的管理面板来管理它们。 如果没有图像，我可以成功地将图像添加到产品中，但当我上传至少一个图像时（我可以通过编辑或初始创建），我无法进一步上传或删除现有图像。我只是不明白为什么最初的创建或更新会起作用，但更进一步的是，如果我的路线或控制器出现错误，它会在第一次添加图片时出现，不是吗

当我试图通过编辑将新图片添加到现有产品中，并使用现有图片（如果没有初始图片，则更新会正确执行）时，这是一个错误：

我的表格：

=form_for([:admin, @product]) do |f|
                %p
                    ...a lot of simple fields, that are working correctly
                    .box
                        %h3 Options
                        =f.fields_for :options do |builder|
                            =render 'option_fields', f: builder
                            %br
                        =link_to_add_fields 'Add an option', f, :options

                    =f.fields_for :image, Image.new, html: { multipart: true, id: "fileupload"  } do |op|
                        = op.label 'Load product pictures'
                        = op.file_field :image, multiple: true, id: 'fileupload', name: "product[images_attributes][][image]", class: 'form-control'
                    -if @product.images.any?
                        .box
                            %h6 Delete existing pictures
                            %p
                                =f.fields_for :images do |builder|
                                    =image_tag builder.object.image, width: 120
                                    =builder.label :_destroy, 'Delete picture'
                                    =builder.check_box :_destroy
                                    %br
                                    %hr.short.alt
                =f.submit 'Save', id: 'submit-data', class: 'btn btn-success'
                =link_to 'Back', admin_path, class: 'btn btn-info'

这是我的产品管理员控制器

class Admin::ProductsController < AdminController

    before_action   :find_product, only: [:edit, :destroy, :update]

    def index
        @products = Product.all
    end

    def edit
    end

    def new
        @product = Product.new
        option = @product.options.build
        @product.servizations.build
    end

    def create
        @product = Product.new(product_params)
        if @product.save
            redirect_to admin_products_path
            flash[:success] = "Created"
        else
            render action: :new
        end
    end

    def update
        if @product.update!(product_params)
            redirect_to edit_admin_product_path(@product)
            flash[:success] = "Updated"
        else
            render action: :edit
        end
    end

    def destroy
        if @product.destroy
            redirect_to admin_products_path
            flash[:info] = 'Deleted
        end
    end

    private

        def product_params
            params.require(:product).permit(:title, :description, :advertising_text,
                :fancy_quote, :hot, :hotpic, :product_size_ids, :material,
                { volume_ids: [] }, { color_ids: [] }, { addservice_ids: [] }, :category_id, :subcategory_id, 
                options_attributes: [:size, :weight, :price, :material, :product_id, :id],
                images_attributes: [ :image, :product_id, :id ],
                servizations_attributes: [:id, :product_id, :addservice_id, :coefficient]
                )
        end

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

更新。根据请求，我的rake路由：

admin_product_images GET    /admin/products/:product_id/images(.:format)                            admin/images#index
                               POST   /admin/products/:product_id/images(.:format)                            admin/images#create
       new_admin_product_image GET    /admin/products/:product_id/images/new(.:format)                        admin/images#new
      edit_admin_product_image GET    /admin/products/:product_id/images/:id/edit(.:format)                   admin/images#edit
           admin_product_image GET    /admin/products/:product_id/images/:id(.:format)                        admin/images#show
                               PATCH  /admin/products/:product_id/images/:id(.:format)                        admin/images#update
                               PUT    /admin/products/:product_id/images/:id(.:format)                        admin/images#update
                               DELETE /admin/products/:product_id/images/:id(.:format)                        admin/images#destroy
                admin_products GET    /admin/products(.:format)                                               admin/products#index
                               POST   /admin/products(.:format)                                               admin/products#create
             new_admin_product GET    /admin/products/new(.:format)                                           admin/products#new
            edit_admin_product GET    /admin/products/:id/edit(.:format)                                      admin/products#edit
                 admin_product GET    /admin/products/:id(.:format)                                           admin/products#show
                               PATCH  /admin/products/:id(.:format)                                           admin/products#update
                               PUT    /admin/products/:id(.:format)                                           admin/products#update
                               DELETE /admin/products/:id(.:format)                                           admin/products#destroy

---

我看不出有什么问题。获取的错误表示您正在使用该路径的

POST

。它应该是一个

补丁

/

放置

。您可以发布编辑视图和新视图吗？恐怕它们都很简单：

%h1编辑：=@product.title=render'form'

和新建：

%h1 Create new product=render'form'

您使用的rails版本是什么？我可以看看相关的

rake路由吗

My rails版本：

rails-v rails 4.2.4

rake路由我将作为初始问题的更新发布，它们占用了太多的空间。为什么你有嵌套的图像路由，但也允许从表单中创建它们？我看不出有任何问题。获取的错误表示您正在使用该路径的

POST

。它应该是一个

补丁

/

放置

。您可以发布编辑视图和新视图吗？恐怕它们都很简单：

%h1编辑：=@product.title=render'form'

和新建：

%h1 Create new product=render'form'

您使用的rails版本是什么？我是否可以查看相关的

rake路由

My rails版本：

rails-v rails 4.2.4

rake路由我将作为初始问题的更新发布，它们占用了太多的空间。为什么您有嵌套的图像路由，但也允许从表单中创建它们？

class Product < ActiveRecord::Base

    validates :title, :description, :advertising_text, presence: true
    validates :category_id, :subcategory_id, presence: true

    mount_uploader :hotpic, HotpicUploader

    belongs_to  :category 
    belongs_to  :subcategory
    has_many    :options
    has_many    :images, dependent: :destroy
    has_many    :hot_pics
    has_many    :line_items

    has_many    :voluminazations
    has_many    :volumes, through: :voluminazations

    has_many    :colorizations
    has_many    :colors, through: :colorizations

    has_many    :accompanships
    has_many    :accompanies, through: :accompanships

    has_many    :servizations
    has_many    :addservices, through: :servizations

    accepts_nested_attributes_for :options
    accepts_nested_attributes_for :images
    accepts_nested_attributes_for :hot_pics
    accepts_nested_attributes_for :servizations

    before_destroy  :ensure_not_referenced_by_any_line_item

    def initialized_servizations # this is the key method
    [].tap do |o|
      Addservice.all.each do |addservice|
        if c = servizations.find { |c| c.addservice_id == addservice.id }
          o << c.tap { |c| c.enable ||= true }
        else
          o << Servization.new(addservice_id: addservice.id)
        end
      end
    end
end

    private

        # Ensure there are no line items referencing this product
        def ensure_not_referenced_by_any_line_item
            if line_items.empty?
                return true
            else
                errors.add(:base, 'Line Items present')
                return false
            end
        end

end

resources :products do
    resources :servizations
    resources :colors
    resources :options do
      resources :option_pics
    end
  end

  namespace :admin do
    get '', to: 'dashboard#index', as: '/'
    resources :products do
      resources :images
    end
    resources :categories
    resources :subcategories
    resources :volumes
    resources :members
    resources :addservices
    resources :settings
    resources :deliveries
  end

admin_product_images GET    /admin/products/:product_id/images(.:format)                            admin/images#index
                               POST   /admin/products/:product_id/images(.:format)                            admin/images#create
       new_admin_product_image GET    /admin/products/:product_id/images/new(.:format)                        admin/images#new
      edit_admin_product_image GET    /admin/products/:product_id/images/:id/edit(.:format)                   admin/images#edit
           admin_product_image GET    /admin/products/:product_id/images/:id(.:format)                        admin/images#show
                               PATCH  /admin/products/:product_id/images/:id(.:format)                        admin/images#update
                               PUT    /admin/products/:product_id/images/:id(.:format)                        admin/images#update
                               DELETE /admin/products/:product_id/images/:id(.:format)                        admin/images#destroy
                admin_products GET    /admin/products(.:format)                                               admin/products#index
                               POST   /admin/products(.:format)                                               admin/products#create
             new_admin_product GET    /admin/products/new(.:format)                                           admin/products#new
            edit_admin_product GET    /admin/products/:id/edit(.:format)                                      admin/products#edit
                 admin_product GET    /admin/products/:id(.:format)                                           admin/products#show
                               PATCH  /admin/products/:id(.:format)                                           admin/products#update
                               PUT    /admin/products/:id(.:format)                                           admin/products#update
                               DELETE /admin/products/:id(.:format)                                           admin/products#destroy