ruby-on-rails - 回形针如何更改基本名称(文件名)？

Question

我正在尝试更改照片的基本名称(文件名):

在我的模型中我有:

  attr_accessor :image_url, :basename

  has_attached_file :image,
          :styles => { :original => ["300x250>", :png], :small => ["165x138>", :png] },
          :url  => "/images/lille/:style/:id/:basename.:extension",
          :path => ":rails_root/public/images/lille/:style/:id/:basename.:extension"
before_save :basename
private

  def basename
  self.basename = "HALLLO"
  end

但是文件名根本没有改变。

Answer 1

如果您直接分配文件，您可以这样做:

photo.image = the_file
photo.image.instance_write(:file_name, "the_desired_filename.png")
photo.save