无效的单表继承类型：Spree :: Image不是Spree :: Asset（ActiveRecord :: SubclassNotFound）的子类

Question

我正在尝试在Spree商业中循环创建多个图像。狂欢版本：3.7.3，Rails 5.2，Ruby 2.5

我尝试通过控制台创建图像，并且效果很好。但是当我循环尝试它们时，会发生异常。 我也在development.rb中做了config.active_job.queue_adapter =：inline 和 self.inheritance_column =在images_decorator中为零，但没有运气

product = Spree::Product.last
images = ["https://www.gstatic.com/webp/gallery3/1.png","https://www.gstatic.com/webp/gallery3/2.png"]


images.each do |src|
  puts("\nImage url: #{src}\n")
  request = Typhoeus.get(src)
  ext = file_extention(src)
  file = Tempfile.new(['temp', ext], encoding: 'ascii-8bit')
  File.open(file, 'wb') { |fp| fp.write(request.response_body) }
  filename = src.gsub("https://www.gstatic.com/webp/gallery3/", "")
  img = product.master.images.find_by(attachment_file_name: filename)
  if img.blank?
    puts "\n***Creating Image***\n"
    product.master.images.create!(attachment: { io: file, filename: filename, content_type: get_content_type(src) },
                                  attachment_file_name: filename)
    # img = Spree::Image.create!(attachment: { io: file, filename: filename, :content_type => get_content_type(src) },
    #                            attachment_file_name: filename)
    # product.master.images << img (It was giving error here)
  end
  file.close
  file.unlink
end

实用方法：

def get_content_type(url)
  MIME::Types.type_for(url).first.try(:content_type)
end

def file_extention(url)
  ext = MIME::Types.type_for(url).first.try(:content_type).split('/')[1]
  ".#{ext}"
end

期望创建图像但得到错误：ActiveRecord :: SubclassNotFound（无效的单表继承类型：Spree :: Image不是Spree :: Asset的子类）