Ruby on rails 保存后重命名Spree:：Image

图像文件应重命名为

[variant name]-[barrelated option type].jpg

，用于变体。我已经走了这么远

更新代码

Spree::Image.class_eval do

 after_save :change_file_name

 private

  def change_file_name
    if self.viewable.kind_of? Spree::Variant
      product_name = self.viewable.product.name.downcase.gsub(" ","_")
      underscored_option_types = get_underscored_option_types
      random_number = rand(10000...1000000)
      extension = File.extname(self.attachment_file_name).downcase
      attachment_file_name = product_name+"-"+underscored_option_types+"-"+"#{random_number}"+"#{extension}"
      self.update_column(:attachment_file_name, attachment_file_name)
    end
  end

end

---

此代码仅重命名

attachment\u file\u name

列。如何更改图像的名称？即使是

self.save

也不起作用，因为我逃避了递归循环。

我不得不在各自的位置重命名文件，因为存储的图像样式（版本）不同。您必须在各自的位置重命名图像的每个版本。我希望以下代码能帮助某人。干杯：）

Spree::Image.class_eval do

 after_save :change_file_name

 private

  def change_file_name
    @skip_change_file_name ||= false
    return if @skip_change_file_name
    if self.viewable.kind_of? Spree::Variant
      product_name = self.viewable.product.name.downcase.gsub(" ","_")
      underscored_option_types = get_underscored_option_types
      random_number = rand(10000...1000000)
      extension = File.extname(self.attachment_file_name).downcase
      new_file_name = product_name+"-"+underscored_option_types+"-"+"#{random_number}"+"#{extension}"
      (self.attachment.styles.keys+[:original]).each do |style|
        FileUtils.move(self.attachment.path(style), File.join(File.dirname(self.attachment.path(style)), new_file_name))
      end
    self.attachment_file_name = new_file_name
    @skip_change_file_name = true
    self.save!
    end
  end

end