Rails ActiveStorage映像不显示

Question

我想使用Rails应用程序上传图像。最初，我使用回形针，但现在还没有开发回形针，所以我决定切换到内置的rails机会。

嗯，我做了文档（https://edgeguides.rubyonrails.org/active_storage_overview.html）中写的所有事情。它也可以正常工作，将图像内容写入数据库，但是当我尝试显示图片时，它只是向我显示“无法加载图形图标”。

这里是我的代码：

artwork.rb

class Artwork < ApplicationRecord
  THUMBNAIL_SIZE = '150x150'
  has_one_attached :image
end

artworks_controller.rb

class ArtworksController < ApplicationControlle 
  def create
    return redirect_to({:controller => :exhibitions, :action => :show, :id => @artwork.exhibition_id}, :notice => 'Kunstwerk wurde erfolgreich erstellt') if @artwork.save
    render :action => :form
  end

  def update
    return redirect_to({:controller => :exhibitions, :action => :show, :id => @artwork.exhibition_id}, :notice => 'Kunstwerk wurde erfolgreich aktualisiert') if @artwork.update(artwork_params)
    render :action => :form
  end

  private
    # Use callbacks to share common setup or constraints between actions.
    def set_artwork
      @artwork ||= Artwork.find(params[:id])
    end

    def new_artwork
      return redirect_to({:controller => :exhibitions, :action => :index}) if params[:artwork].blank? || params[:artwork][:exhibition_id].blank?
      @artwork ||= Artwork.new(artwork_params)
    end

    # Only allow a trusted parameter "white list" through.
    def artwork_params
      params.require(:artwork).permit(:title, :description, :designation, :size, :time, :technique, :room_id, :artist_id, :exhibition_id, :inventory_number, :image)
    end
end

show.html.erb

<%= image_tag(artwork.image) %>

environments / development.rb

config.active_storage.service = :local

config / storage.yml

local:
  service: Disk
  root: <%= Rails.root.join("storage") %>

Answer 1

我认为您想要的是主动存储

<%= image_tag url_for(artwork.image) %>