Rails 5.2 Active Storage清除/删除附件

3 回答

• 8

  您循环遍历图像集合并在每个图像上调用清除方法 . 相反，您应该链接到控制器上的destroy方法，如下所示，考虑到您的控制器操作并猜测您的路由名称 .

  错误是因为图像对象返回其完整路径，并且链接认为您想要指向的内容 . 相反，你只需要它 signed_id 并希望链接调用具有 delete_image_attachment 路径的路径 .

  <%= link_to 'Remove', delete_image_attachment_collections_url(image.signed_id),
                  method: :delete,
                  data: { confirm: 'Are you sure?' } %>
  

  destroy方法看起来像这样......

  def delete_image_attachment
    @image = ActiveStorage::Blob.find_signed(params[:id])
    @image.purge
    redirect_to collections_url
  end
  

  路线应该是这样的......

  resources :collections do
    member do
      delete :delete_image_attachment
    end
  end
  

  查看rails routing guide以获取更多有趣的路由事实 .

  回复于 2024-04-29T17:26:10+08:00
• 3

  感谢您关于Blob vs Attachment的更新！清除附件后，我将redirect_back改为我来自的形式，如下所示：

  def remove_attachment
    attachment = ActiveStorage::Attachment.find(params[:id])
    attachment.purge # or use purge_later
    redirect_back(fallback_location: collections_path)
  end
  

  不是重新加载整个页面的最佳解决方案，但有效...

  回复于 2024-04-29T17:26:10+08:00
• 1

  好吧，我有点解决了我的问题，但我没有发生 .

  每当我点击"Remove"按钮时，我都会收到此错误：
  

  它想要重定向到ID为43的collection_url（而我的集合的ID实际上是6,43可能是图像附件的ID） .

  当我手动重新加载相同的收集页面时，图片消失了（所以它有点工作），但这不是理想的 .

  有人知道我如何改进我的代码，以便我的控制器中的redirect_to指向当前的集合ID而不是Activestorage图像附件ID？

  我的档案

  View: collection/show.html.erb:

  <div id="gallery">
    <% @collection.images.each do |image| %>
      <%= image_tag(image) %>
      <%= link_to 'Remove', delete_image_attachment_collection_url(image),
                      method: :delete,
                      data: { confirm: 'Are you sure?' } %>
    <% end %>
  </div>
  

  Controller: collections_controller.rb

  class CollectionsController < ApplicationController
    before_action :set_collection, only: [:show, :edit, :update, :destroy]
    before_action :set_collections
  
    # GET /collections
    # GET /collections.json
    def index
    end
  
    # GET /collections/1
    # GET /collections/1.json
    def show
    end
  
    # GET /collections/new
    def new
      @collection = Collection.new
    end
  
    # GET /collections/1/edit
    def edit
    end
  
    # POST /collections
    # POST /collections.json
    def create
      @collection = Collection.new(collection_params)
  
      respond_to do |format|
        if @collection.save
          format.html { redirect_to @collection, notice: 'Fotocollectie is aangemaakt.' }
          format.json { render :show, status: :created, location: @collection }
        else
          format.html { render :new }
          format.json { render json: @collection.errors, status: :unprocessable_entity }
        end
      end
  
      # collection = Collection.create!(collection_params)
      # redirect_to collection
    end
  
    # PATCH/PUT /collections/1
    # PATCH/PUT /collections/1.json
    def update
      respond_to do |format|
        if @collection.update(collection_params)
          format.html { redirect_to @collection, notice: 'Fotocollectie is bijgewerkt.' }
          format.json { render :show, status: :ok, location: @collection }
        else
          format.html { render :edit }
          format.json { render json: @collection.errors, status: :unprocessable_entity }
        end
      end
    end
  
    # DELETE /collections/1
    # DELETE /collections/1.json
    def destroy
      @collection.destroy
      respond_to do |format|
        format.html { redirect_to collections_url, notice: 'Fotocollectie is verwijderd.' }
        format.json { head :no_content }
      end
    end
  
    def delete_image_attachment
      @image = ActiveStorage::Attachment.find(params[:id])
      @image.purge
      redirect_to @current_page
    end
  
    private
      # Use callbacks to share common setup or constraints between actions.
      def set_collection
        @collection = Collection.find(params[:id])
      end
  
      def set_collections
        @collections = Collection.all
      end
  
      # Never trust parameters from the scary internet, only allow the white list through.
      def collection_params
        params.require(:collection).permit(:title, :order, images: [])
      end
  end
  

  Model: collection.rb

  class Collection < ApplicationRecord
    has_many_attached :images
  end
  

  Routes: routes.rb

  Rails.application.routes.draw do
    root 'home#index'
  
    get 'about', to: 'pages#about', as: :about
    get 'contact', to: 'pages#contact', as: :contact
    get 'settings', to: 'settings#edit'
  
    resource :setting
  
    resources :collections do
      member do
        delete :delete_image_attachment
      end
    end
  end
  

  回复于 2024-04-29T17:26:10+08:00